MeshBase (Artisynth API documentation)

java.lang.Object
- maspack.geometry.MeshBase

All Implemented Interfaces:

java.lang.Cloneable, HasRenderProps, IsRenderable, IsSelectable, Renderable

Direct Known Subclasses:

PointMesh, PolygonalMesh, PolylineMesh
```
public abstract class MeshBase
extends java.lang.Object
implements Renderable, java.lang.Cloneable
```
A "mesh" is a geometric object defined by a set of vertices, which are then connected in some specific way.

Field Summary

Fields
Modifier and Type Field and Description

RigidTransform3d XMeshToWorld
- Fields inherited from interface maspack.render.IsRenderable
  TRANSPARENT, TWO_DIMENSIONAL

Fields
Modifier and Type	Field and Description
`RigidTransform3d`	`XMeshToWorld`

Constructor Summary

Constructors
Constructor and Description

MeshBase()
Creates an empty polyline mesh.

Constructors
Constructor and Description
`MeshBase()` Creates an empty polyline mesh.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`Vertex3d`	`addVertex(double x, double y, double z)` Adds a point to the set of vertices associated with this mesh.
`Vertex3d`	`addVertex(Point3d pnt)` Adds a point to the set of vertices associated with this mesh.
`Vertex3d`	`addVertex(Point3d pnt, boolean byReference)` Adds a point to the set of vertices associated with this mesh.
`void`	`addVertex(Vertex3d vtx)` Adds a vertex to the set of vertices associated with this mesh.
`long`	`checksum()`
`void`	`clear()` Clears this mesh (makes it empty).
`void`	`clearColors()` Clears the color information for this mesh.
`void`	`clearNormals()` Clears any normals that have been explicitly set for the mesh using `setNormals(java.util.List<maspack.matrix.Vector3d>, int[])`.
`void`	`clearRenderProps()`
`void`	`clearTextureCoords()` Clears the texture information for this mesh.
`MeshBase`	`clone()` Creates a clone of this mesh.
`double`	`computeAverageRadius()`
`void`	`computeCentroid(Vector3d centroid)`
`void`	`computeLocalBounds(Vector3d pmin, Vector3d pmax, RigidTransform3d TFM)` Compute the bounds of the vertices of this mesh with respect to a frame F that is described with respect to local mesh coordinates.
`OBB`	`computeOBB()` Computes the oriented bounding box (OBB) that most tightly contains this mesh, using the `OBB.Method.ConvexHull` method.
`OBB`	`computeOBB(OBB.Method method)` Computes the oriented bounding box (OBB) that most tightly contains this mesh, using the specified method.
`double`	`computeRadius()` Returns the radius of this mesh.
`void`	`computeWorldBounds(Vector3d pmin, Vector3d pmax, RigidTransform3d TFW)` Compute the bounds of the vertices of this mesh with respect to a frame F that is described with respect to world coordinates.
`boolean`	`containsVertex(Vertex3d vtx)`
`MeshBase`	`copy()` Creates a copy of this mesh.
`int[]`	`createFeatureIndices()` Creates and returns a set of feature indices for this mesh.
`SpatialInertia`	`createInertia(double mass, MassDistribution dist)` Computes a spatial inertia for this mesh, given a mass and a mass distribution.
`RenderProps`	`createRenderProps()` Factory method to create render properties appropriate to this object.
`abstract RenderProps`	`createRenderProps(HasProperties host)` Creates an appropriate RenderProps for this Mesh.
`abstract int[]`	`createVertexIndices()` Creates and returns the vertex indices associated with each geometric feature in this mesh.
`boolean`	`epsilonEquals(MeshBase base, double eps)` Base method for testing if two meshes are equal.
`abstract BVTree`	`getBVTree()` Returns a bounding volume tree to be used for proximity queries involving this mesh.
`float[]`	`getColor(int idx)` Returns the color corresponding to index `idx`.
`int[]`	`getColorIndices()` Returns the color indices associated with this mesh, or `null` if this mesh does not have colors.
`Renderer.ColorInterpolation`	`getColorInterpolation()` Returns the interpolation method to be used for vertex-based coloring.
`java.util.ArrayList<float[]>`	`getColors()` Returns the colors associated with this mesh, or `null` if this mesh does not have colors.
`float[]`	`getFeatureColor(int fidx, int k)` Returns the color associated with the k-th vertex of the feature indexed by `fidx`, or `null` if there is no such color.
`boolean`	`getFeatureColoringEnabled()` Returns `true` if feature coloring is enabled for this mesh, as described for `setFeatureColoringEnabled()`.
`int[]`	`getFeatureIndexOffsets()` Returns the index offsets for each geometric feature (face, line segment, etc.) associated with this mesh.
`Vector3d`	`getFeatureNormal(int fidx, int k)` Returns the normal associated with the k-th vertex of the feature indexed by `fidx`, or `null` if there is no such normal.
`Vector3d`	`getFeatureTextureCoords(int fidx, int k)` Returns the texture coordinate associated with the k-th vertex of the feature indexed by `fidx`, or `null` if there is no such coordinate.
`void`	`getLocalBounds(Vector3d pmin, Vector3d pmax)` Returns the minimum and maximum coordinates for this mesh, in mesh local coordinates.
`RigidTransform3d`	`getMeshToWorld()` Returns a pointer to the current mesh to world transform.
`void`	`getMeshToWorld(RigidTransform3d X)` Returns the spatial transform this mesh.
`java.lang.String`	`getName()`
`Vector3d`	`getNormal(int idx)` Returns the normal corresponding to index `idx`.
`int[]`	`getNormalIndices()` Returns the normal indices associated with this mesh, or `null` if this mesh does not have normals.
`java.util.ArrayList<Vector3d>`	`getNormals()` Returns the vertex normals associated with this mesh, or `null` if this mesh does not have normals.
`double`	`getRadius()` Computes an approximate radius for this mesh, determined as half the diagonal of the corners of its bounding box.
`int`	`getRenderHints()` Returns a bit code giving rendering hints about this renderable.
`float[]`	`getRenderNormal(int idx)`
`RenderProps`	`getRenderProps()` Returns the render properities for this object.
`void`	`getSelection(java.util.LinkedList<java.lang.Object> list, int qid)` Append to `list` the component (or components) associated with the `qid`-th selection query issued by this component's render method.
`java.util.ArrayList<Vector3d>`	`getTextureCoords()` Returns all the texture coordinates associated with this mesh, or `null` if this mesh does not have texture coordinates.
`Vector3d`	`getTextureCoords(int idx)` Returns the texture coordinate corresponding to index `idx`.
`int[]`	`getTextureIndices()` Returns the texture indices associated with this mesh, or `null` if this mesh does not have texture coordinates.
`int`	`getVersion()` A version number that changes for ANY modifications, including vertex position changes
`Vertex3d`	`getVertex(int idx)` Returns the idx-th vertex in this mesh.
`boolean`	`getVertexColoringEnabled()` Returns `true` if vertex coloring is enabled for this mesh, as described for `setVertexColoringEnabled()`.
`Renderer.ColorMixing`	`getVertexColorMixing()` Returns the color mixing method to be used for vertex-based coloring.
`java.util.ArrayList<Vertex3d>`	`getVertices()` Returns this mesh's vertices.
`void`	`getWorldBounds(Vector3d pmin, Vector3d pmax)` Returns the minimum and maximum coordinates for this mesh, in world coordinates.
`abstract boolean`	`getWriteNormals()` Returns `true` if this mesh's normals should be written to a file.
`RigidTransform3d`	`getXMeshToWorldRender()`
`abstract boolean`	`hasAutoNormalCreation()` Returns `true` if this mesh automatically creates a default set of normals if `getNormals()` is called and no normals have been explicitly set using `setNormals(java.util.List<maspack.matrix.Vector3d>, int[])`.
`boolean`	`hasColors()` Returns `true` if there are colors associated with this mesh.
`boolean`	`hasExplicitColors()`
`boolean`	`hasExplicitNormals()` Returns `true` if vertex normal information has been explicitly specified using `setNormals(java.util.List<maspack.matrix.Vector3d>, int[])`.
`boolean`	`hasNormals()` Returns `true` if there are normals associated with this mesh (or if they will be generated automatically).
`boolean`	`hasTextureCoords()` Returns `true` if there are texture coordinates associated with this mesh.
`void`	`inverseTransform(AffineTransform3dBase X)` Applies an inverse affine transformation to the vertices of this mesh, in local mesh coordinates.
`void`	`inverseTransform(VectorTransformer3d trans)` Applies an inverse transform to the vertices and normals of this mesh, in local mesh coordinates.
`boolean`	`isColorsFixed()` See `setColorsFixed(boolean)`
`boolean`	`isEmpty()` Returns true if this mesh is empty.
`boolean`	`isFeatureColored()` Returns `true` if the colors for this mesh are assigned on a per-feature basis.
`boolean`	`isFixed()` Returns whether or not this mesh is considered ``fixed'', as described in `setFixed`.
`boolean`	`isRenderBuffered()`
`boolean`	`isSelectable()` Returns true if this object is in fact selectable.
`boolean`	`isTextureCoordsFixed()` See `setTextureCoordsFixed(boolean)`
`boolean`	`isVertexColored()` Returns `true` if the colors for this mesh are assigned on a per-vertex basis.
`boolean`	`meshToWorldIsIdentity()` Returns true if the mesh to world transform is the identity.
`void`	`notifyVertexPositionsModified()` Notifies this mesh that vertex positions have been modified, and cached data dependent on these positions should be invalidated.
`int`	`numColors()` Returns the number of colors associated with this mesh, or 0 if no colors are defined.
`abstract int`	`numFeatures()` Returns the number of features in this mesh.
`int`	`numNormals()` Returns the number of normals associated with this mesh, or 0 if no normals are defined.
`int`	`numSelectionQueriesNeeded()` If this selectable manages its own selection (by issuing selection queries within its `render` method), then this method should return the maximum number of selection queries that will be required.
`int`	`numTextureCoords()` Returns the number of texture coordinates associated with this mesh, or 0 if no texture coordinates are defined.
`int`	`numVertices()` Returns the number of vertices in this mesh.
`void`	`perturb(double tol)` Applies a random perturbation to the vertex positions of this mesh.
`void`	`prerender(RenderList list)` Called prior to rendering to allow this object to update the internal state required for rendering (such as by caching rendering coordinates).
`void`	`prerender(RenderProps props)`
`void`	`read(java.io.File file)` Reads this mesh from a file, with the file format being inferred from the file name suffix.
`void`	`read(java.io.File file, boolean zeroIndexed)` Reads this mesh from a file, with the file format being inferred from the file name suffix.
`void`	`read(java.io.Reader reader)` Reads the contents of this mesh from a Reader.
`void`	`read(java.io.Reader reader, boolean zeroIndexed)` Reads the contents of this mesh from a Reader.
`abstract void`	`read(ReaderTokenizer rtok, boolean zeroIndexed)` Reads the contents of this mesh from a ReaderTokenizer.
`boolean`	`removeVertex(Vertex3d vtx)` Removes a vertex from this mesh.
`boolean`	`removeVertexFast(Vertex3d vtx)` Removes a vertex from this mesh.
`java.util.ArrayList<java.lang.Integer>`	`removeVertices(java.util.Collection<Vertex3d> vertices)` Removes a set of vertices from this mesh, as indicated by a collection.
`void`	`render(Renderer renderer, int flags)` Render this object using the functionality of the supplied `Renderer`.
`abstract void`	`render(Renderer renderer, RenderProps props, int flags)`
`void`	`replaceVertices(java.util.List<? extends Vertex3d> vtxs)`
`void`	`saveRenderInfo(RenderProps props)`
`void`	`scale(double s)` Scales the vertices of this mesh.
`void`	`scale(double sx, double sy, double sz)` Scales the vertices of this mesh in the given directions.
`void`	`setColor(int idx, java.awt.Color color)` Sets the color corresponding to index `idx`.
`void`	`setColor(int idx, double r, double g, double b, double a)` Sets the color corresponding to index `idx`.
`void`	`setColor(int idx, float[] color)` Sets the color corresponding to index `idx`.
`void`	`setColor(int idx, float r, float g, float b, float a)` Sets the color corresponding to index `idx`.
`Renderer.ColorInterpolation`	`setColorInterpolation(Renderer.ColorInterpolation interp)` Sets the interpolation method to be used for vertex-based coloring.
`void`	`setColors(java.util.List<float[]> colors, int[] indices)` Explicitly sets the colors and associated indices for this mesh.
`void`	`setColorsFixed(boolean set)` Sets whether or not colors should be considered ``fixed''.
`void`	`setFeatureColoringEnabled()` Enables feature coloring for this mesh.
`void`	`setFixed(boolean fixed)` Sets whether or not this mesh to is to be considered ``fixed''.
`void`	`setMeshToWorld(RigidTransform3d X)` Sets the spatial transform this mesh.
`void`	`setName(java.lang.String name)`
`void`	`setNormal(int idx, Vector3d nrml)` Sets the normal corresponding to index `idx`.
`void`	`setNormals(java.util.List<Vector3d> normals, int[] indices)` Explicitly sets the normals and associated indices for this mesh.
`void`	`setRenderBuffered(boolean enable)`
`void`	`setRenderProps(RenderProps props)` Assigns a new set of render properties to this object.
`void`	`setTextureCoords(int idx, Vector3d coords)` Sets the texture coordinate corresponding to index `idx`.
`void`	`setTextureCoords(java.util.List<Vector3d> coords, int[] indices)` Explicitly sets the texture coordinates and associated indices for this mesh.
`void`	`setTextureCoordsFixed(boolean set)` Sets whether or not texture coordinates should be considered ``fixed''.
`void`	`setVertexColoringEnabled()` Enables vertex coloring for this mesh.
`Renderer.ColorMixing`	`setVertexColorMixing(Renderer.ColorMixing cmix)` Sets the color mixing method to be used for vertex-based coloring.
`Point3d`	`size()`
`boolean`	`supportsMassDistribution(MassDistribution dist)` Queries whether or not a given mass distrubution is supported for this mesh type.
`void`	`transform(AffineTransform3dBase X)` Applies an affine transformation to the vertices of this mesh.
`void`	`transform(VectorTransformer3d trans)` Applies a transform to the vertices and normals of this mesh, in local mesh coordinates.
`void`	`transformToLocal(Point3d pnt)`
`void`	`transformToLocal(Vector3d pnt)`
`RigidTransform3d`	`transformToOBB()` Transforms this mesh so that its center and orientation are aligned with its oriented bounding box (OBB) as computed by `computeOBB()`.
`RigidTransform3d`	`transformToOBB(OBB.Method method)` Transforms this mesh so that its center and orientation are aligned with its oriented bounding box (OBB) as computed by `computeOBB(OBB.Method)`.
`void`	`transformToWorld(Point3d pnt)`
`void`	`transformToWorld(Vector3d pnt)`
`void`	`translate(Vector3d off)` Translates the vertices of this mesh.
`RigidTransform3d`	`translateToCentroid()` Translates the vertices of this mesh so that its origin coincides with the centroid.
`void`	`updateBounds(Vector3d pmin, Vector3d pmax)` Update the minimum and maximum points for this object.
`void`	`write(java.io.File file)` Writes this mesh to a File, with the file format being inferred from the file name suffix.
`void`	`write(java.io.File file, java.lang.String fmtStr, boolean zeroIndexed)` Writes this mesh to a File, with the file format being inferred from the file name suffix.
`abstract void`	`write(java.io.PrintWriter pw, NumberFormat fmt, boolean zeroIndexed)` Writes this mesh to a PrintWriter.
`void`	`write(java.io.PrintWriter pw, java.lang.String fmtStr)` Writes this mesh to a PrintWriter.
`void`	`write(java.lang.String filePath)` Writes this mesh to a file, with the file format being inferred from the file name suffix.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - XMeshToWorld
```
public RigidTransform3d XMeshToWorld
```
- Constructor Detail
  - MeshBase
```
public MeshBase()
```
    Creates an empty polyline mesh.
- Method Detail
  - setName
```
public void setName(java.lang.String name)
```
  - getName
```
public java.lang.String getName()
```
  - getColorInterpolation
```
public Renderer.ColorInterpolation getColorInterpolation()
```
    Returns the interpolation method to be used for vertex-based coloring.
    
    Returns:
    
    color interpolation method.
  - setColorInterpolation
```
public Renderer.ColorInterpolation setColorInterpolation(Renderer.ColorInterpolation interp)
```
    Sets the interpolation method to be used for vertex-based coloring.
    
    Parameters:
    
    interp - new color interpolation method
    
    Returns:
    
    previous color interpolation method
  - getVertexColorMixing
```
public Renderer.ColorMixing getVertexColorMixing()
```
    Returns the color mixing method to be used for vertex-based coloring.
    
    Returns:
    
    color mixing method.
  - setVertexColorMixing
```
public Renderer.ColorMixing setVertexColorMixing(Renderer.ColorMixing cmix)
```
    Sets the color mixing method to be used for vertex-based coloring.
    
    Parameters:
    
    cmix - new color mixing method
    
    Returns:
    
    previous color mixing method
  - getVersion
```
public int getVersion()
```
    A version number that changes for ANY modifications, including vertex position changes
    
    Returns:
    
    version number
  - notifyVertexPositionsModified
```
public void notifyVertexPositionsModified()
```
    Notifies this mesh that vertex positions have been modified, and cached data dependent on these positions should be invalidated.
  - setFixed
```
public void setFixed(boolean fixed)
```
    Sets whether or not this mesh to is to be considered ``fixed''. A fixed mesh is one for which the vertex coordinate values and normals are considered constant. Rendering speeds can therefore be improved by pre-allocating appropriate graphical display buffers.
    By default, a mesh is set to be fixed unless the vertices are created using referenced points (see addVertex).
    
    Parameters:
    
    fixed - if true, sets this mesh to be considered fixed.
    
    See Also:
    
    isFixed
  - isFixed
```
public boolean isFixed()
```
    Returns whether or not this mesh is considered ``fixed'', as described in setFixed.
    
    Returns:
    
    true if this mesh is fixed.
  - setVertexColoringEnabled
```
public void setVertexColoringEnabled()
```
    Enables vertex coloring for this mesh. This creates a default color for each existing vertex, and sets the color indices to the same as those returned by createVertexIndices(). The application can subsequently set the colors for each vertex using the various setColor() methods, or by accessing and modifying the colors directly from getColors(). When vertex coloring is enabled, the color and index sets are automatically adjusted whenever vertices or features are added or removed.
    Vertex coloring is disabled by clearColors(), setFeatureColoringEnabled(), or any call to setColors(java.util.List<float[]>, int[]).
  - getVertexColoringEnabled
```
public boolean getVertexColoringEnabled()
```
    Returns true if vertex coloring is enabled for this mesh, as described for setVertexColoringEnabled().
    
    Returns:
    
    true if vertex coloring is enabled.
  - isVertexColored
```
public boolean isVertexColored()
```
    Returns true if the colors for this mesh are assigned on a per-vertex basis. This will be true if vertex coloring is explicitly enabled, or if the number of colors equals the number of vertices and the vertex and color indexing is the same.
  - setFeatureColoringEnabled
```
public void setFeatureColoringEnabled()
```
    Enables feature coloring for this mesh. This creates a default color for each existing feature, and sets the color indices to the same as those returned by createFeatureIndices(). The application can subsequently set the colors for each feature using the various setColor() methods, or by accessing and modifying the colors directly from getColors(). When feature coloring is enabled, the color and index sets are automatically adjusted whenever features are added or removed.
    Feature coloring is disabled by clearColors(), setVertexColoringEnabled(), or any call to setColors(java.util.List<float[]>, int[]).
  - getFeatureColoringEnabled
```
public boolean getFeatureColoringEnabled()
```
    Returns true if feature coloring is enabled for this mesh, as described for setFeatureColoringEnabled().
    
    Returns:
    
    true if feature coloring is enabled.
  - isFeatureColored
```
public boolean isFeatureColored()
```
    Returns true if the colors for this mesh are assigned on a per-feature basis. This will be true if feature coloring is explicitly enabled, or if the number of colors equals the number of vertices and the feature and color indexing is the same.
  - getRenderProps
```
public RenderProps getRenderProps()
```
    Returns the render properities for this object. If no render properties are assigned, this routines returns null.
    
    Specified by:
    
    getRenderProps in interface HasRenderProps
    
    Returns:
    
    current render properties for this object
  - createRenderProps
```
public abstract RenderProps createRenderProps(HasProperties host)
```
    Creates an appropriate RenderProps for this Mesh. If the supplied host is non-null, then it is used to initialize any inherited properties. The property name associated with the host is assumed to be "renderProps".
    
    Parameters:
    
    host - if non-null, is used to initialize inherited values
    
    Returns:
    
    render properties appropriate for this mesh
  - createRenderProps
```
public RenderProps createRenderProps()
```
    Factory method to create render properties appropriate to this object.
    
    Specified by:
    
    createRenderProps in interface HasRenderProps
    
    Returns:
    
    new render properties for this object
  - setRenderProps
```
public void setRenderProps(RenderProps props)
```
    Assigns a new set of render properties to this object. An argument of null will remove render properties from this object.
    
    Specified by:
    
    setRenderProps in interface HasRenderProps
    
    Parameters:
    
    props - new render properties for this object
  - clearRenderProps
```
public void clearRenderProps()
```
  - getMeshToWorld
```
public void getMeshToWorld(RigidTransform3d X)
```
    Returns the spatial transform this mesh. At present, the spatial transform is used only for rendering.
    
    Parameters:
    
    X - returns the transform from mesh to world coordinates
  - getXMeshToWorldRender
```
public RigidTransform3d getXMeshToWorldRender()
```
  - getRenderNormal
```
public float[] getRenderNormal(int idx)
```
  - meshToWorldIsIdentity
```
public boolean meshToWorldIsIdentity()
```
    Returns true if the mesh to world transform is the identity.
    
    Returns:
    
    true if the spatial transform is the identity.
  - getMeshToWorld
```
public RigidTransform3d getMeshToWorld()
```
    Returns a pointer to the current mesh to world transform. This should not be modified by the caller.
    
    Returns:
    
    current mesh to world transform
  - setMeshToWorld
```
public void setMeshToWorld(RigidTransform3d X)
```
    Sets the spatial transform this mesh. At present, the spatial transform is used only for rendering. If the transform is the identity, then meshToWorldIsIdentity will subsequently return true.
    
    Parameters:
    
    X - transform from mesh to world coordinates
  - transformToWorld
```
public void transformToWorld(Point3d pnt)
```
  - transformToLocal
```
public void transformToLocal(Point3d pnt)
```
  - transformToWorld
```
public void transformToWorld(Vector3d pnt)
```
  - transformToLocal
```
public void transformToLocal(Vector3d pnt)
```
  - getVertices
```
public java.util.ArrayList<Vertex3d> getVertices()
```
    Returns this mesh's vertices. The vertices are contained within an ArrayList, each element of which is of type Vertex3d. Modifying these elements will modify the mesh.
    
    Returns:
    
    list of this mesh's vertices.
  - numVertices
```
public int numVertices()
```
    Returns the number of vertices in this mesh.
    
    Returns:
    
    number of vertices in this mesh
  - getVertex
```
public Vertex3d getVertex(int idx)
```
    Returns the idx-th vertex in this mesh.
    
    Parameters:
    
    idx - index of the desired vertex
    
    Returns:
    
    idx-th vertex
  - numFeatures
```
public abstract int numFeatures()
```
    Returns the number of features in this mesh. What a feature is depends on the mesh type: faces for PolygonalMesh, lines for PolylineMesh, points (which map to vertices) for PointMesh.
    
    Returns:
    
    number of features in this mesh
  - getLocalBounds
```
public void getLocalBounds(Vector3d pmin,
                           Vector3d pmax)
```
    Returns the minimum and maximum coordinates for this mesh, in mesh local coordinates.
    
    Parameters:
    
    pmin - (optional) minimum point of the bounding box
    
    pmax - (optional) maximum point of the bounding box
  - getWorldBounds
```
public void getWorldBounds(Vector3d pmin,
                           Vector3d pmax)
```
    Returns the minimum and maximum coordinates for this mesh, in world coordinates.
    
    Parameters:
    
    pmin - (optional) minimum point of the bounding box
    
    pmax - (optional) maximum point of the bounding box
  - read
```
public void read(java.io.Reader reader)
          throws java.io.IOException
```
    Reads the contents of this mesh from a Reader. The input format depends on the specific mesh type.
    
    Parameters:
    
    reader - supplies the input description of the mesh
    
    Throws:
    
    java.io.IOException
  - read
```
public void read(java.io.Reader reader,
                 boolean zeroIndexed)
          throws java.io.IOException
```
    Reads the contents of this mesh from a Reader. The input format depends on the specific mesh type.
    
    Parameters:
    
    reader - supplies the input description of the mesh
    
    zeroIndexed - if true, the index numbering for mesh vertices starts at 0. Otherwise, numbering starts at 1.
    
    Throws:
    
    java.io.IOException
  - read
```
public abstract void read(ReaderTokenizer rtok,
                          boolean zeroIndexed)
                   throws java.io.IOException
```
    Reads the contents of this mesh from a ReaderTokenizer. The input format depends on the specific mesh type.
    
    Parameters:
    
    rtok - tokenizer providing the input
    
    zeroIndexed - if true, the index numbering for mesh vertices starts at 0. Otherwise, numbering starts at 1.
    
    Throws:
    
    java.io.IOException
  - computeWorldBounds
```
public void computeWorldBounds(Vector3d pmin,
                               Vector3d pmax,
                               RigidTransform3d TFW)
```
    Compute the bounds of the vertices of this mesh with respect to a frame F that is described with respect to world coordinates. F is specified by a transform TFW that maps from F to world coordinates. Specifying TFW as null is equivalent to specifying it as the identity, in which case F will be the same as the world frame.
    
    Parameters:
    
    pmin - returns the minimum corner of the bounding box (in F)
    
    pmax - returns the maximum corner of the bounding box (in F)
    
    TFW - pose of F with respect to world. If null, F is taken to be the world frame.
  - computeLocalBounds
```
public void computeLocalBounds(Vector3d pmin,
                               Vector3d pmax,
                               RigidTransform3d TFM)
```
    Compute the bounds of the vertices of this mesh with respect to a frame F that is described with respect to local mesh coordinates. F is specified by a transform TFM that maps from F to mesh coordinates. Specifying TFM as null is equivalent to specifying it as the identity, in which case F will be the same as mesh frame.
    
    Parameters:
    
    pmin - returns the minimum corner of the bounding box (in F)
    
    pmax - returns the maximum corner of the bounding box (in F)
    
    TFM - pose of F with respect to mesh coordinates. If null, F is taken to be the mesh frame.
  - addVertex
```
public void addVertex(Vertex3d vtx)
```
    Adds a vertex to the set of vertices associated with this mesh. The pnt field of the vertex should be non-null. The index of the vertex will be set to reflect it's position in the list of vertices.
    
    Parameters:
    
    vtx - vertex to add
    
    See Also:
    
    addVertex(Point3d,boolean), addVertex(Point3d)
  - removeVertexFast
```
public boolean removeVertexFast(Vertex3d vtx)
```
    Removes a vertex from this mesh.
    
    Parameters:
    
    vtx - vertex to remove
    
    Returns:
    
    true if the vertex was present
  - removeVertex
```
public boolean removeVertex(Vertex3d vtx)
```
    Removes a vertex from this mesh.
    
    Parameters:
    
    vtx - vertex to remove
    
    Returns:
    
    true if the vertex was present
  - removeVertices
```
public java.util.ArrayList<java.lang.Integer> removeVertices(java.util.Collection<Vertex3d> vertices)
```
    Removes a set of vertices from this mesh, as indicated by a collection.
    
    Parameters:
    
    vertices - Collection of vertices to remove
  - containsVertex
```
public boolean containsVertex(Vertex3d vtx)
```
  - addVertex
```
public Vertex3d addVertex(Point3d pnt)
```
    Adds a point to the set of vertices associated with this mesh. Equivalent to calling addVertex(pnt,false).
    
    Parameters:
    
    pnt - vertex point to add
    
    Returns:
    
    vertex object containing the point
    
    See Also:
    
    addVertex(Point3d,boolean)
  - addVertex
```
public Vertex3d addVertex(double x,
                          double y,
                          double z)
```
    Adds a point to the set of vertices associated with this mesh.
    
    Parameters:
    
    x - vertex x coordinate
    
    y - vertex y coordinate
    
    z - vertex z coordinate
    
    Returns:
    
    vertex object containing the point
  - addVertex
```
public Vertex3d addVertex(Point3d pnt,
                          boolean byReference)
```
    Adds a point to the set of vertices associated with this mesh.
    
    Parameters:
    
    pnt - vertex point to add
    
    byReference - if true, then the supplied Point3d argument is not copied but is referred to directly by the vertex structure. The mesh will track any changes to this point and isFixed will return false.
    
    Returns:
    
    vertex object containing the point
    
    See Also:
    
    addVertex(Point3d)
  - read
```
public void read(java.io.File file)
          throws java.io.IOException
```
    Reads this mesh from a file, with the file format being inferred from the file name suffix.
    
    Parameters:
    
    file - file containing the mesh description
    
    Throws:
    
    java.io.IOException - if an I/O error occurred or if the file type is not compatible with polygonal meshes
  - read
```
public void read(java.io.File file,
                 boolean zeroIndexed)
          throws java.io.IOException
```
    Reads this mesh from a file, with the file format being inferred from the file name suffix.
    For Alias Wavefront obj files (with extension .obj), zeroIndexed can be used to indicate that the numbering of vertex indices starts at 0. Otherwise, numbering starts at 1.
    
    Parameters:
    
    file - file containing the mesh description
    
    zeroIndexed - if true, index numbering for mesh vertices starts at 0. Otherwise, numbering starts at 1.
    
    Throws:
    
    java.io.IOException - if an I/O error occurred or if the file type is not compatible with polygonal meshes
  - write
```
public void write(java.io.File file)
           throws java.io.IOException
```
    Writes this mesh to a File, with the file format being inferred from the file name suffix.
    
    Parameters:
    
    file - File to write this mesh to
    
    Throws:
    
    java.io.IOException - if an I/O error occurred or if the file format is not compatible with the mesh type
  - write
```
public void write(java.lang.String filePath)
           throws java.io.IOException
```
    Writes this mesh to a file, with the file format being inferred from the file name suffix.
    
    Parameters:
    
    filePath - Path name of the file to write this mesh to
    
    Throws:
    
    java.io.IOException - if an I/O error occurred or if the file format is not compatible with the mesh type
  - write
```
public void write(java.io.File file,
                  java.lang.String fmtStr,
                  boolean zeroIndexed)
           throws java.io.IOException
```
    Writes this mesh to a File, with the file format being inferred from the file name suffix.
    For text file formats, the optional argument fmtStr supplies a C printf style format string used for printing the vertex coordinates. For a description of the format string syntax, see NumberFormat. Good default choices for fmtStr are either "%g" (full precision), or "%.Ng", where N is the number of desired significant figures. If fmtStr is null, full precision is assumed.
    For Alias Wavefront obj files (with extension .obj), zeroIndexed can be used to request that the numbering of vertex indices starts at 0. Otherwise, numbering starts at 1.
    
    Parameters:
    
    file - File to write this mesh to
    
    fmtStr - optional format string for mesh vertices
    
    zeroIndexed - if true, index numbering for mesh vertices starts at 0. Otherwise, numbering starts at 1.
    
    Throws:
    
    java.io.IOException - if an I/O error occurred or if the file format is not compatible with the mesh type
  - write
```
public void write(java.io.PrintWriter pw,
                  java.lang.String fmtStr)
           throws java.io.IOException
```
    Writes this mesh to a PrintWriter. The exact output format will depend on the specific mesh type. Index numbering starts at one, and the format used to print vertex coordinates is specified by a C printf style format string contained in the parameter fmtStr. For a description of the format string syntax, see NumberFormat. Good default choices for fmtStr are either "%g" (full precision), or "%.Ng", where N is the number of desired significant figures.
    
    Parameters:
    
    pw - PrintWriter to write this mesh to
    
    fmtStr - string specifying the format for writing the vertex coordinates
    
    Throws:
    
    java.io.IOException
  - write
```
public abstract void write(java.io.PrintWriter pw,
                           NumberFormat fmt,
                           boolean zeroIndexed)
                    throws java.io.IOException
```
    Writes this mesh to a PrintWriter. The exact output format will depend on the specific mesh type.
    
    Parameters:
    
    pw - PrintWriter to write this mesh to
    
    fmt - format for writing the vertex coordinates
    
    zeroIndexed - if true, index numbering for mesh vertices starts at 0. Otherwise, numbering starts at 1.
    
    Throws:
    
    java.io.IOException
  - scale
```
public void scale(double s)
```
    Scales the vertices of this mesh. The topology remains unchanged.
    
    Parameters:
    
    s - scale factor
  - scale
```
public void scale(double sx,
                  double sy,
                  double sz)
```
    Scales the vertices of this mesh in the given directions. The topology remains unchanged.
    
    Parameters:
    
    sx - scaling factor in the x direction
    
    sy - scaling factor in the y direction
    
    sz - scaling factor in the z direction
  - size
```
public Point3d size()
```
  - getRadius
```
public double getRadius()
```
    Computes an approximate radius for this mesh, determined as half the diagonal of the corners of its bounding box.
    
    Returns:
    
    approximate radius for this mesh
  - updateBounds
```
public void updateBounds(Vector3d pmin,
                         Vector3d pmax)
```
    Update the minimum and maximum points for this object. In an x-y-z coordinate system with x directed to the right and y directed upwards, the minimum and maximum points can be thought of as defining the left-lower-far and right-upper-near corners of a bounding cube. This method should only reduce the elements of the minimum point and increase the elements of the maximum point, since it may be used as part of an iteration to determine the bounding cube for several different objects.
    
    Specified by:
    
    updateBounds in interface IsRenderable
    
    Parameters:
    
    pmin - minimum point
    
    pmax - maximum point
  - translate
```
public void translate(Vector3d off)
```
    Translates the vertices of this mesh. The topology of the mesh remains unchanged.
    
    Parameters:
    
    off - offset to add to the mesh vertices
  - translateToCentroid
```
public RigidTransform3d translateToCentroid()
```
    Translates the vertices of this mesh so that its origin coincides with the centroid. The topology of the mesh remains unchanged.
    
    Returns:
    
    the resulting rigid transform that was applied to the mesh
  - transformToOBB
```
public RigidTransform3d transformToOBB()
```
    Transforms this mesh so that its center and orientation are aligned with its oriented bounding box (OBB) as computed by computeOBB().
    
    Returns:
    
    the resulting rigid transform that was applied to the mesh
  - transformToOBB
```
public RigidTransform3d transformToOBB(OBB.Method method)
```
    Transforms this mesh so that its center and orientation are aligned with its oriented bounding box (OBB) as computed by computeOBB(OBB.Method).
    
    Parameters:
    
    method - method used to compute the OBB.
    
    Returns:
    
    the resulting rigid transform that was applied to the mesh
  - transform
```
public void transform(AffineTransform3dBase X)
```
    Applies an affine transformation to the vertices of this mesh. The topology of the mesh remains unchanged.
    
    Parameters:
    
    X - affine transformation
  - inverseTransform
```
public void inverseTransform(AffineTransform3dBase X)
```
    Applies an inverse affine transformation to the vertices of this mesh, in local mesh coordinates. The topology of the mesh remains unchanged.
    
    Parameters:
    
    X - affine transformation
  - transform
```
public void transform(VectorTransformer3d trans)
```
    Applies a transform to the vertices and normals of this mesh, in local mesh coordinates. The topology of the mesh remains unchanged.
    
    Parameters:
    
    trans - transformation to apply
  - inverseTransform
```
public void inverseTransform(VectorTransformer3d trans)
```
    Applies an inverse transform to the vertices and normals of this mesh, in local mesh coordinates. The topology of the mesh remains unchanged.
    
    Parameters:
    
    trans - transformation to apply
  - getRenderHints
```
public int getRenderHints()
```
    Returns a bit code giving rendering hints about this renderable. Current bit codes include TRANSPARENT and TWO_DIMENSIONAL.
    
    Specified by:
    
    getRenderHints in interface IsRenderable
    
    Returns:
    
    bit code of rendering hints.
  - clear
```
public void clear()
```
    Clears this mesh (makes it empty).
  - isEmpty
```
public boolean isEmpty()
```
    Returns true if this mesh is empty.
    
    Returns:
    
    true if mesh is empty
  - getSelection
```
public void getSelection(java.util.LinkedList<java.lang.Object> list,
                         int qid)
```
    Description copied from interface: IsSelectable
    
    Append to list the component (or components) associated with the qid-th selection query issued by this component's render method. This will only be called if this component manages its own selection (i.e., the number nums returned by IsSelectable.numSelectionQueriesNeeded() is positive), and qid will in turn be a number between 0 and nums-1.
    
    Specified by:
    
    getSelection in interface IsSelectable
    
    Parameters:
    
    list - selected objects are appended to the end of this list
    
    qid - index of the selection query
  - isSelectable
```
public boolean isSelectable()
```
    Description copied from interface: IsSelectable
    
    Returns true if this object is in fact selectable.
    
    Specified by:
    
    isSelectable in interface IsSelectable
    
    Returns:
    
    true if this object is selectable
  - numSelectionQueriesNeeded
```
public int numSelectionQueriesNeeded()
```
    Description copied from interface: IsSelectable
    
    If this selectable manages its own selection (by issuing selection queries within its render method), then this method should return the maximum number of selection queries that will be required. Otherwise, this method should return -1.
    
    Specified by:
    
    numSelectionQueriesNeeded in interface IsSelectable
    
    Returns:
    
    maximum number of selection queries needed by this component, or -1 if this component does not manage its own selection.
  - prerender
```
public void prerender(RenderList list)
```
    Description copied from interface: IsRenderable
    
    Called prior to rendering to allow this object to update the internal state required for rendering (such as by caching rendering coordinates). The object may add internal objects to the list of objects being rendered, by calling
    list.addIfVisible (obj);
    for each of the objects in question.
    
    Specified by:
    
    prerender in interface IsRenderable
    
    Parameters:
    
    list - list of objects to be rendered
  - prerender
```
public void prerender(RenderProps props)
```
  - setRenderBuffered
```
public void setRenderBuffered(boolean enable)
```
  - isRenderBuffered
```
public boolean isRenderBuffered()
```
  - saveRenderInfo
```
public void saveRenderInfo(RenderProps props)
```
  - copy
```
public MeshBase copy()
```
    Creates a copy of this mesh.
  - clone
```
public MeshBase clone()
```
    Creates a clone of this mesh.
    
    Overrides:
    
    clone in class java.lang.Object
  - replaceVertices
```
public void replaceVertices(java.util.List<? extends Vertex3d> vtxs)
```
  - computeCentroid
```
public void computeCentroid(Vector3d centroid)
```
  - computeOBB
```
public OBB computeOBB(OBB.Method method)
```
    Computes the oriented bounding box (OBB) that most tightly contains this mesh, using the specified method.
    
    Parameters:
    
    method - method used to compute the OBB
    
    Returns:
    
    OBB containing this mesh
  - computeOBB
```
public OBB computeOBB()
```
    Computes the oriented bounding box (OBB) that most tightly contains this mesh, using the OBB.Method.ConvexHull method.
    
    Returns:
    
    OBB containing this mesh
  - computeRadius
```
public double computeRadius()
```
    Returns the radius of this mesh. This is defined to be the maximum distance of any vertex from the mesh's centroid.
  - computeAverageRadius
```
public double computeAverageRadius()
```
  - render
```
public void render(Renderer renderer,
                   int flags)
```
    Render this object using the functionality of the supplied Renderer.
    
    Specified by:
    
    render in interface IsRenderable
    
    Parameters:
    
    renderer - provides the functionality used to perform the rendering.
    
    flags - flags that may be used to control different aspects of the rendering. Flags are defined in Renderer and currently include Renderer.HIGHLIGHT and Renderer.SORT_FACES.
  - render
```
public abstract void render(Renderer renderer,
                            RenderProps props,
                            int flags)
```
  - epsilonEquals
```
public boolean epsilonEquals(MeshBase base,
                             double eps)
```
    Base method for testing if two meshes are equal. Two MeshBase objects are considered equal if their vertex coordinates and transforms are equal within eps. This method, and its overrides, is used in mesh unit tests.
  - getFeatureIndexOffsets
```
public int[] getFeatureIndexOffsets()
```
    Returns the index offsets for each geometric feature (face, line segment, etc.) associated with this mesh. The returned array maps each feature's index to an offset into the arrays returned by getNormalIndices(), getColorIndices(), and getTextureIndices(), which can be used to find the normal, color, or texture indices that correspond to the vertices of the feature. So for example, if we have a PolygonalMesh and we want to find the normals associated with each of the three vertices of the (triangular) face at index fidx, we could use the following code fragment:
```
 
    ArrayList<Vector3d> normals = mesh.getNormals();
    int[] indices = mesh.getNormalIndices();
    int[] indexOffs = mesh.getFeatureIndexOffsets();

    int offset = indexOffs[fidx];   
    Vector3d nrm0 = normals.get(indices[offset]);
    Vector3d nrm1 = normals.get(indices[offset+1]);
    Vector3d nrm2 = normals.get(indices[offset+2]);
 
 
```
    The array returned by this method has a length of n+1, where n is the number of mesh features. The last entry contains the total number of feature vertices. This is the length of the index array that is returned by getNormalIndices(), getColorIndices(), etc., as well as the length that must be used for the indices argument (if specified) in setNormals(java.util.List<maspack.matrix.Vector3d>, int[]), setColors(java.util.List<float[]>, int[]), etc.
    Returns:
    
    feature index offsets for this mesh
  - createVertexIndices
```
public abstract int[] createVertexIndices()
```
    Creates and returns the vertex indices associated with each geometric feature in this mesh.
    The indices are zero-based and specify the vertex indices for each mesh feature. The number of indices and their structure hence depends on the mesh subclass: for PolygonalMesh meshes, this gives the vertices for each face; for PolylineMesh, the vertices for each polyline, and for PointMesh, the vertices for each point. For example, assume that we have a PolygonalMesh with four vertices and four triangles arranged to form a tetrahedron, so that the vertex indices for each triangular face are given by (0, 2, 1), (0, 3, 2), (0, 1, 3), and (1, 2, 3). Then the returned vertex indices will be
```
   0 2 1  0 3 2  0 1 3  1 2 3
 
```
    Returns:
    
    vertex indices for this mesh. Should not be modified.
  - createFeatureIndices
```
public int[] createFeatureIndices()
```
    Creates and returns a set of feature indices for this mesh.
    The indices are zero-based and specify, for each feature vertex, the index of the feature. What the features are depends on the mesh subclass: faces for PolygonalMesh, polyline for PolylineMesh, vertices themselves for PointMesh. For example, assume that we have a PolygonalMesh with four vertices and four triangles arranged to form a tetrahedron. Then the returned feature indices will be
```
   0 0 0  1 1 1  2 2 2  3 3 3 
 
```
    Returns:
    
    feature indices for this mesh. Should not be modified.
  - hasAutoNormalCreation
```
public abstract boolean hasAutoNormalCreation()
```
    Returns true if this mesh automatically creates a default set of normals if getNormals() is called and no normals have been explicitly set using setNormals(java.util.List<maspack.matrix.Vector3d>, int[]).
    
    Returns:
    
    true if this mesh automatically creates normals.
  - getWriteNormals
```
public abstract boolean getWriteNormals()
```
    Returns true if this mesh's normals should be written to a file. This will be the case if the normals were explicitly set, or if they were automatically created using information (such as hard edges) that cannot be easily reconstructed from the information written to standard file formats.
    
    Returns:
    
    true if the normals should be written to a file
  - getNormals
```
public java.util.ArrayList<Vector3d> getNormals()
```
    Returns the vertex normals associated with this mesh, or null if this mesh does not have normals. If no normal information is currently defined and hasAutoNormalCreation() returns true, then a set of vertex normals and indices will be generated automatically.
    The set of normals is indexed by the indices returned by getNormalIndices() to specify a single normal per feature vertex.
    Vertex normals are used for shading computations during smooth mesh rendering. If smooth mesh rendering is selected and there are no normals, then shading will be disabled.
    
    Returns:
    
    vertex normals for this mesh, or null if there are none.
  - numNormals
```
public int numNormals()
```
    Returns the number of normals associated with this mesh, or 0 if no normals are defined.
    
    Returns:
    
    number of normals associated with this mesh.
  - hasNormals
```
public boolean hasNormals()
```
    Returns true if there are normals associated with this mesh (or if they will be generated automatically).
    
    Returns:
    
    true if this mesh has normals
  - getNormal
```
public Vector3d getNormal(int idx)
```
    Returns the normal corresponding to index idx. The returned value is a reference that can be modified by the application. If normals are automatically generated, then modifying the value may lead to unexpected results.
    
    Parameters:
    
    idx - normal index
    
    Returns:
    
    normal corresponding to idx
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if normals are not defined or if the index is out of range.
  - setNormal
```
public void setNormal(int idx,
                      Vector3d nrml)
```
    Sets the normal corresponding to index idx. If normals are automatically generated, then this may lead to unexpected results.
    
    Parameters:
    
    idx - normal index
    
    nrml - new normal value (should be normalized)
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if normals are not defined or if the index is out of range.
  - getFeatureNormal
```
public Vector3d getFeatureNormal(int fidx,
                                 int k)
```
    Returns the normal associated with the k-th vertex of the feature indexed by fidx, or null if there is no such normal.
    
    Parameters:
    
    fidx - feature index
    
    k - vertex index relative to the feature
    
    Returns:
    
    feature vertex color, or null
  - getNormalIndices
```
public int[] getNormalIndices()
```
    Returns the normal indices associated with this mesh, or null if this mesh does not have normals. If no normal information is currently defined and hasAutoNormalCreation() returns true, then a set of vertex normals and indices will be generated automatically.
    The indices are zero-based and index into the list returned by getNormals() to specific a normal per feature vertex. The number of indices and their structure hences depends on the mesh subclass: polygonal meshes have one index per vertex per face, polyline meshes will have two indices per line segment, and point meshes will have one index per vertex. For polygonal meshes, if there is one normal per vertex, then the indexing structure will be the same as that for face vertices. For example, assume that we have a mesh with four vertices and four triangles arranged to form a tetrahedron, so that the vertex indices for each triangular face are given by (0, 2, 1), (0, 3, 2), (0, 1, 3), and (1, 2, 3). Then if there is one normal per vertex, there should be 12 normal indices with the values`
```
  0 2 1 0 3 2 0 1 3 1 2 3
 
```
    In some cases, there may be no normal information for the vertices of specific features. In such cases, the cooresponding index values will be -1.
    Returns:
    
    normal indices for this mesh, or null. Must not be modified.
  - setNormals
```
public void setNormals(java.util.List<Vector3d> normals,
                       int[] indices)
```
    Explicitly sets the normals and associated indices for this mesh. The information supplied by nrmls and indices is copied to internal structures that are subsequently returned by getNormals() and getNormalIndices(), respectively. The argument indices specifies an index values into nrmls for each vertex of each feature, as described for getNormalIndices(). If a feature vertex has no normal value, the index should be specified as -1. indices is null, then nrmls should contain one normal per vertex and a default index set will be created, appropriate to the mesh subclass.
    If normals is null, then normals are explicitly removed and subsequent calls to getNormals() will return null.
    After this call, hasExplicitNormals() will return true.
    
    Parameters:
    
    normals - vertex normals to be set for this mesh
    
    indices - normal indices, or null if the indices are to be automatically generated.
  - hasExplicitNormals
```
public boolean hasExplicitNormals()
```
    Returns true if vertex normal information has been explicitly specified using setNormals(java.util.List<maspack.matrix.Vector3d>, int[]). If normals have been explicitly set, then it is up to the application to update the normals whenever the vertex positions are modified. Note that even if this method returns true, it is still possible for the mesh to not have any normals (i.e., hasNormals() and numNormals() may return false and 0). That's because setNormals(null,null) will explicitly set the mesh to not have any normals.
    
    Returns:
    
    true if vertex normals have been explicitly set
  - clearNormals
```
public void clearNormals()
```
    Clears any normals that have been explicitly set for the mesh using setNormals(java.util.List<maspack.matrix.Vector3d>, int[]). After this call, hasExplicitNormals() will return false and getNormals() and getNormalIndices() will either return null or automatically create new normals and indices, depending on whether hasAutoNormalCreation() returns true.
  - getColors
```
public java.util.ArrayList<float[]> getColors()
```
    Returns the colors associated with this mesh, or null if this mesh does not have colors. This set of colors is indexed by the indices returned by getColorIndices() to specify a single color per feature vertex.
    Each color in the returned list is described by a float[] of length four giving the RGBA values in the range 0 to 1. The structure of the list should not be modified, but individual float[] objects can be changed to modify the corresponding color.
    
    Returns:
    
    colors associated with this mesh, or null if there are none.
  - numColors
```
public int numColors()
```
    Returns the number of colors associated with this mesh, or 0 if no colors are defined.
    
    Returns:
    
    number of colors associated with this mesh.
  - hasColors
```
public boolean hasColors()
```
    Returns true if there are colors associated with this mesh.
    
    Returns:
    
    true if this mesh has colors
  - getColor
```
public float[] getColor(int idx)
```
    Returns the color corresponding to index idx. The returned value is a reference that can be modified by the application.
    
    Parameters:
    
    idx - color index
    
    Returns:
    
    color corresponding to idx
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if colors are not defined or if the index is out of range.
  - setColor
```
public void setColor(int idx,
                     float[] color)
```
    Sets the color corresponding to index idx.
    
    Parameters:
    
    idx - color index
    
    color - new color value. Array must have a length >= 3 and give the RGB (or RGBA values for length >= 4) in the range [0, 1].
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if colors are not defined or if the index is out of range.
  - setColor
```
public void setColor(int idx,
                     java.awt.Color color)
```
    Sets the color corresponding to index idx.
    
    Parameters:
    
    idx - color index
    
    color - new color value
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if colors are not defined or if the index is out of range.
  - setColor
```
public void setColor(int idx,
                     float r,
                     float g,
                     float b,
                     float a)
```
    Sets the color corresponding to index idx.
    
    Parameters:
    
    idx - color index
    
    r - red (range [0,1])
    
    g - green (range [0,1])
    
    b - blue (range [0,1])
    
    a - alpha (range [0,1])
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if colors are not defined or if the index is out of range.
  - setColor
```
public void setColor(int idx,
                     double r,
                     double g,
                     double b,
                     double a)
```
    Sets the color corresponding to index idx.
    
    Parameters:
    
    idx - color index
    
    r - red (range [0,1])
    
    g - green (range [0,1])
    
    b - blue (range [0,1])
    
    a - alpha (range [0,1])
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if colors are not defined or if the index is out of range.
  - getFeatureColor
```
public float[] getFeatureColor(int fidx,
                               int k)
```
    Returns the color associated with the k-th vertex of the feature indexed by fidx, or null if there is no such color.
    
    Parameters:
    
    fidx - feature index
    
    k - vertex index relative to the feature
    
    Returns:
    
    feature vertex color, or null
  - getColorIndices
```
public int[] getColorIndices()
```
    Returns the color indices associated with this mesh, or null if this mesh does not have colors. These index into the list returned by getColors() to specify a color per feature vertex, using the same indexing structure as that described for getNormalIndices().
    
    Returns:
    
    color indices for this mesh, or null. Must not be modified.
  - hasExplicitColors
```
public boolean hasExplicitColors()
```
  - setColors
```
public void setColors(java.util.List<float[]> colors,
                      int[] indices)
```
    Explicitly sets the colors and associated indices for this mesh. The information supplied by colors and indices is copied to internal structures that are subsequently returned by getColors() and getColorIndices(), respectively.
    Colors should be specified as float[] objects with a length >= 3, indicating RGG values (or RGBA values for length >= 4) in the range [0,1].
    The argument indices specifies an index values into colors for each vertex of each feature, as described for getNormalIndices(). If a feature vertex has no color value, the index should be specified as -1. If indices is null, then colors should contain one color per vertex and a default index set will be created, appropriate to the mesh subclass.
    If colors is null, then colors are explicitly removed and subsequent calls to getColors() will return null.
    Each entry in colors should be a float[] of length three (or four) giving the RGB (or RGBA) values for the color in the range 0 to 1.
    Calling this method clears vertex or feature coloring, if either of those had been set. However, isVertexColored() or isFeatureColored() may still return true if colors and their indexing match either.
    
    Parameters:
    
    colors - colors to be set for this mesh
    
    indices - color indices, or null if the indices are to be automatically generated.
  - clearColors
```
public void clearColors()
```
    Clears the color information for this mesh. After this call, getColors() and getColorIndices() will both return null.
  - setColorsFixed
```
public void setColorsFixed(boolean set)
```
    Sets whether or not colors should be considered ``fixed''. This is used as a hint to determine how to cache rendering info for the mesh.
  - isColorsFixed
```
public boolean isColorsFixed()
```
    See setColorsFixed(boolean)
  - setTextureCoordsFixed
```
public void setTextureCoordsFixed(boolean set)
```
    Sets whether or not texture coordinates should be considered ``fixed''. This is used as a hint to determine how to cache rendering info for the mesh.
  - isTextureCoordsFixed
```
public boolean isTextureCoordsFixed()
```
    See setTextureCoordsFixed(boolean)
  - getTextureCoords
```
public java.util.ArrayList<Vector3d> getTextureCoords()
```
    Returns all the texture coordinates associated with this mesh, or null if this mesh does not have texture coordinates. These coordinates are indexed by the indices returned by getTextureIndices() to specify a single coordinate per feature vertex.
    The structure of this list should not be modified, but individual entries can be changed to modify the corresponding coordinates.
    
    Returns:
    
    texture coordinates associated with this mesh, or null if there are none.
  - numTextureCoords
```
public int numTextureCoords()
```
    Returns the number of texture coordinates associated with this mesh, or 0 if no texture coordinates are defined.
    
    Returns:
    
    number of texture coordinates associated with this mesh.
  - hasTextureCoords
```
public boolean hasTextureCoords()
```
    Returns true if there are texture coordinates associated with this mesh.
    
    Returns:
    
    true if this mesh has texture coordiates
  - getTextureCoords
```
public Vector3d getTextureCoords(int idx)
```
    Returns the texture coordinate corresponding to index idx. The returned value is a reference that can be modified by the application.
    
    Parameters:
    
    idx - coordinate index
    
    Returns:
    
    texture coordinate corresponding to idx
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if texture coordinates are not defined or if the index is out of range.
  - setTextureCoords
```
public void setTextureCoords(int idx,
                             Vector3d coords)
```
    Sets the texture coordinate corresponding to index idx.
    
    Parameters:
    
    idx - coordinate index
    
    coords - new texture coordinates
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if texture coordinates are not defined or if the index is out of range.
  - getFeatureTextureCoords
```
public Vector3d getFeatureTextureCoords(int fidx,
                                        int k)
```
    Returns the texture coordinate associated with the k-th vertex of the feature indexed by fidx, or null if there is no such coordinate.
    
    Parameters:
    
    fidx - feature index
    
    k - vertex index relative to the feature
    
    Returns:
    
    feature vertex texture coordinate, or null
  - getTextureIndices
```
public int[] getTextureIndices()
```
    Returns the texture indices associated with this mesh, or null if this mesh does not have texture coordinates. These index into the list returned by getTextureCoords() to specify a coordinates per feature vertex, using the same indexing structure as that described for getNormalIndices().
    
    Returns:
    
    texture indices for this mesh, or null. Must not be modified.
  - setTextureCoords
```
public void setTextureCoords(java.util.List<Vector3d> coords,
                             int[] indices)
```
    Explicitly sets the texture coordinates and associated indices for this mesh. The information supplied by coords and indices is copied to internal structures that are subsequently returned by getTextureCoords() and getTextureIndices(), respectively. The argument indices specifies an index values into coords for each vertex of each feature, as described for getNormalIndices(). If a feature vertex has no texture coordinate value, the index should be specified as -1. If indices is null, then coords should contain one coordinate per vertex and a default index set will be created, appropriate to the mesh subclass.
    If coords is null, then texture coordinates are explicitly removed and subsequent calls to getTextureCoords() will return null.
    
    Parameters:
    
    coords - texture coordinates to be set for this mesh
    
    indices - texture indices, or null if the indices are to be automatically generated.
  - clearTextureCoords
```
public void clearTextureCoords()
```
    Clears the texture information for this mesh. After this call, getColors() and getColorIndices() will both return null.
  - perturb
```
public void perturb(double tol)
```
    Applies a random perturbation to the vertex positions of this mesh. The magnitude of the pertubation is given by rad * tol, where rad is an estimate of the mesh's ``radius'', as computed by getRadius(), and tol is a supplied tolerance argument.
    This method calls notifyVertexPositionsModified() after applying the perturbation.
    
    Parameters:
    
    tol - controls the size of the perturbation
  - checksum
```
public long checksum()
```
  - createInertia
```
public SpatialInertia createInertia(double mass,
                                    MassDistribution dist)
```
    Computes a spatial inertia for this mesh, given a mass and a mass distribution. Not all meshes support all distributions. For example, all meshes support the MassDistribution.POINT distribution (since all meshes contain vertices), but only meshes with area features (such as faces) support an MassDistribution.AREA distribution.
    
    Parameters:
    
    mass - overall mass
    
    dist - how the mass is distributed across the features
    
    Throws:
    
    java.lang.IllegalArgumentException - if the distribution is not compatible with the available mesh features.
  - supportsMassDistribution
```
public boolean supportsMassDistribution(MassDistribution dist)
```
    Queries whether or not a given mass distrubution is supported for this mesh type.
    
    Returns:
    
    true if the indicated mass distrubution is supported
  - getBVTree
```
public abstract BVTree getBVTree()
```
    Returns a bounding volume tree to be used for proximity queries involving this mesh.
    
    Returns:
    
    bounding volume tree

Class MeshBase

Field Summary

Fields inherited from interface maspack.render.IsRenderable

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

XMeshToWorld

Constructor Detail

MeshBase

Method Detail

setName

getName

getColorInterpolation

setColorInterpolation

getVertexColorMixing

setVertexColorMixing

getVersion

notifyVertexPositionsModified

setFixed

isFixed

setVertexColoringEnabled

getVertexColoringEnabled

isVertexColored

setFeatureColoringEnabled

getFeatureColoringEnabled

isFeatureColored

getRenderProps

createRenderProps

createRenderProps

setRenderProps

clearRenderProps

getMeshToWorld

getXMeshToWorldRender

getRenderNormal

meshToWorldIsIdentity

getMeshToWorld

setMeshToWorld

transformToWorld

transformToLocal

transformToWorld

transformToLocal

getVertices

numVertices

getVertex

numFeatures

getLocalBounds

getWorldBounds

read

read

read

computeWorldBounds

computeLocalBounds

addVertex

removeVertexFast

removeVertex

removeVertices

containsVertex

addVertex

addVertex

addVertex

read

read

write

write

write

write

write

scale

scale

size

getRadius

updateBounds

translate

translateToCentroid

transformToOBB

transformToOBB

transform

inverseTransform

transform