maspack.render

Class RenderableUtils

java.lang.Object

maspack.render.RenderableUtils

public class RenderableUtils
extends java.lang.Object

Provides utility routines for Renderable objects.

Constructor Summary

Constructors

Constructor and Description
RenderableUtils()

Method Summary

Modifier and Type	Method and Description
static void	cloneRenderProps(Renderable r) Sets the RenderProps of a Renderable object to a copy of its existing RenderProps.
static void	drawPoints(Renderer renderer, RenderObject rob, int gidx, RenderProps props, boolean selected) Draws the points in a specified point group of a RenderObject, using the shading, point style and point coloring specified by the supplied RenderProps.
static void	drawTriangles(Renderer renderer, RenderObject rob, int gidx, RenderProps props, boolean selected) Draws the triangles in a specified triangle group of a RenderObject, using the shading, face style and face coloring specified by the supplied RenderProps.
static void	getBounds(IsRenderable r, Point3d min, Point3d max) Computes the bounds for a Renderable.
static double	getRadius(IsRenderable r) Returns a "radius" for a Renderable.
static double	getRadiusAndCenter(Point3d center, IsRenderable r) Returns a "radius" and a center for a Renderable.
static boolean	isVisible(HasRenderProps renderable) Returns true if a Renderable is visible.
static void	updateBounds(Vector3d vmin, Vector3d vmax, float[] vals)
static void	updateFrameBounds(Vector3d vmin, Vector3d vmax, RigidTransform3d TFW, double len) Update bounds to account for the coordinate frame TFW drawn with length len.
static void	updateSphereBounds(Vector3d vmin, Vector3d vmax, Vector3d center, double radius) Update bounds to account for a sphere with a given width and radius.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RenderableUtils

public RenderableUtils()

Method Detail

isVisible

public static boolean isVisible(HasRenderProps renderable)

Returns true if a Renderable is visible.

cloneRenderProps

public static void cloneRenderProps(Renderable r)

Sets the RenderProps of a Renderable object to a copy of its existing RenderProps. If the object does not currently have any RenderProps, (i.e., getRenderProps returns null), then this method does nothing.

This routine is used to prevent side-effects when the existing RenderProps are shared by more than one object.

Parameters:

r - Renderable objects whose RenderProps are to be cloned.

getRadius

public static double getRadius(IsRenderable r)

Returns a "radius" for a Renderable. This is done by computing the distance from the center to the vertices of the bounding box.

getRadiusAndCenter

public static double getRadiusAndCenter(Point3d center,
                                        IsRenderable r)

Returns a "radius" and a center for a Renderable.

getBounds

public static void getBounds(IsRenderable r,
                             Point3d min,
                             Point3d max)

Computes the bounds for a Renderable.

Parameters:

r - Renderable to compute bounds for

min - minimum coordinate values (optional)

max - maximum coordinate values (optional)

updateBounds

public static void updateBounds(Vector3d vmin,
                                Vector3d vmax,
                                float[] vals)

updateSphereBounds

public static void updateSphereBounds(Vector3d vmin,
                                      Vector3d vmax,
                                      Vector3d center,
                                      double radius)

Update bounds to account for a sphere with a given width and radius.

updateFrameBounds

public static void updateFrameBounds(Vector3d vmin,
                                     Vector3d vmax,
                                     RigidTransform3d TFW,
                                     double len)

Update bounds to account for the coordinate frame TFW drawn with length len.

drawPoints

public static void drawPoints(Renderer renderer,
                              RenderObject rob,
                              int gidx,
                              RenderProps props,
                              boolean selected)

Draws the points in a specified point group of a RenderObject, using the shading, point style and point coloring specified by the supplied RenderProps.

Parameters:

renderer - renderer used to draw the points

rob - render object containing the points

gidx - point group index within the render object

props - specifies the shading, point style and point coloring

selected - if true, sets the color to the highlighting color

drawTriangles

public static void drawTriangles(Renderer renderer,
                                 RenderObject rob,
                                 int gidx,
                                 RenderProps props,
                                 boolean selected)

Draws the triangles in a specified triangle group of a RenderObject, using the shading, face style and face coloring specified by the supplied RenderProps.

Parameters:

renderer - renderer used to draw the triangles

rob - render object containing the triangles

gidx - triangle group index within the render object

props - specifies the shading, face style and face coloring

selected - if true, sets the color to the highlighting color