astex
Class ShadowCache

java.lang.Object
  astex.ShadowCache

public class ShadowCache
extends java.lang.Object

Field Summary

static FloatArray	ccacher
static FloatArray	ccachex0 Cylinder cache for shadows.
static FloatArray	ccachex1
static FloatArray	ccachey0
static FloatArray	ccachey1
static FloatArray	ccachez0
static FloatArray	ccachez1
static IntArray	cylinderShadowCacheList
static IntArray	initialList
static double	overallScale Overall scale factor in the renderer.
static FloatArray	scacher
static FloatArray	scachex Sphere cache for shadows.
static FloatArray	scachey
static FloatArray	scachez
static float[]	scr
static float[]	scx References for sphere centers.
static float[]	scy
static float[]	scz
static IntArray	sphereOcclusionCacheList
static IntArray	sphereShadowCacheList Cache and occlusion lists.
static float[]	tc2x References to the triangle bounding sphere info.
static float[]	tc2y
static FloatArray	tcachex0 Triangle cache for shadows.
static FloatArray	tcachex1
static FloatArray	tcachex2
static FloatArray	tcachey0
static FloatArray	tcachey1
static FloatArray	tcachey2
static FloatArray	tcachez0
static FloatArray	tcachez1
static FloatArray	tcachez2
static FloatArray	tcen2dx
static FloatArray	tcen2dy
static FloatArray	tcenr
static FloatArray	tcenx
static FloatArray	tceny
static FloatArray	tcenz
static float[]	tcr
static float[]	tcx
static float[]	tcy
static float[]	tcz
static IntArray	triangleShadowCacheList
static float[]	tx0 References to the triangle array contents.
static float[]	tx1
static float[]	tx2
static float[]	ty0
static float[]	ty1
static float[]	ty2
static float[]	tz0
static float[]	tz1
static float[]	tz2

Constructor Summary

ShadowCache()

Method Summary

static void	addCylinderToCacheList(double x0, double y0, double z0, double x1, double y1, double z1, double r) Add a cylinder to the cache list.
static void	addSphereToCacheList(double x, double y, double z, double r) Add a sphere to the cache list.
static void	addTriangleToCacheList(double x0, double y0, double z0, double x1, double y1, double z1, double x2, double y2, double z2, int transparency) Add a cylinder to the cache list.
static void	boundingSphereCylinder(double c0x, double c0y, double c0z, double c1x, double c1y, double c1z, double r, double[] bs) Prepare bounding sphere that encloses cylinder.
static void	boundingSphereTriangle(double x0, double y0, double z0, double x1, double y1, double z1, double x2, double y2, double z2, double[] bs) Prepare bounding sphere that encloses cylinder.
static void	clearShadowCaches() Clear out the shadow data structures.
static int	intersect_triangle(double[] orig, double[] dir, double[] vert0, double[] vert1, double[] vert2, double[] tuv)
static void	main(java.lang.String[] args)
static boolean	obscuredBySphere(int i, double x, double y, double z)
static boolean	pointInSphere(double x, double y, double z) Is this point in another sphere.
static boolean	pointShadowed(double x, double y, double z) Is this point shadowed by stuff in the shadow cache.
static void	prepareCylinderCacheList(double c0x, double c0y, double c0z, double c1x, double c1y, double c1z, double r) Prepare shadow cache list for cylinder, by making bounding volume a sphere that encloses the whole cylinder.
static void	prepareSphereCacheList(double sx, double sy, double sz, double sr, boolean transparent) Prepare a list of objects that may obscure points on _this_ sphere.
static void	prepareTriangleCacheList(double x0, double y0, double z0, double x1, double y1, double z1, double x2, double y2, double z2, boolean targetIsTransparent) Prepare shadow cache list for triangle, by making bounding volume a sphere that encloses the whole triangle.
static boolean	selfShadowed(double nx, double ny, double nz, double tol) Is the surface at this point self shadowing.
static void	setupShadowCaches(Light l0, double ovs) Set up the shadow cache data structures for renderering.

Methods inherited from class java.lang.Object

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

Field Detail

scachex

public static FloatArray scachex

Sphere cache for shadows.

scachey

public static FloatArray scachey

scachez

public static FloatArray scachez

scacher

public static FloatArray scacher

ccachex0

public static FloatArray ccachex0

Cylinder cache for shadows.

ccachey0

public static FloatArray ccachey0

ccachez0

public static FloatArray ccachez0

ccachex1

public static FloatArray ccachex1

ccachey1

public static FloatArray ccachey1

ccachez1

public static FloatArray ccachez1

ccacher

public static FloatArray ccacher

tcachex0

public static FloatArray tcachex0

Triangle cache for shadows.

tcachey0

public static FloatArray tcachey0

tcachez0

public static FloatArray tcachez0

tcachex1

public static FloatArray tcachex1

tcachey1

public static FloatArray tcachey1

tcachez1

public static FloatArray tcachez1

tcachex2

public static FloatArray tcachex2

tcachey2

public static FloatArray tcachey2

tcachez2

public static FloatArray tcachez2

tcen2dx

public static FloatArray tcen2dx

tcen2dy

public static FloatArray tcen2dy

tcenx

public static FloatArray tcenx

tceny

public static FloatArray tceny

tcenz

public static FloatArray tcenz

tcenr

public static FloatArray tcenr

tx0

public static float[] tx0

References to the triangle array contents.

ty0

public static float[] ty0

tz0

public static float[] tz0

tx1

public static float[] tx1

ty1

public static float[] ty1

tz1

public static float[] tz1

tx2

public static float[] tx2

ty2

public static float[] ty2

tz2

public static float[] tz2

tc2x

public static float[] tc2x

References to the triangle bounding sphere info.

tc2y

public static float[] tc2y

tcx

public static float[] tcx

tcy

public static float[] tcy

tcz

public static float[] tcz

tcr

public static float[] tcr

scx

public static float[] scx

References for sphere centers.

scy

public static float[] scy

scz

public static float[] scz

scr

public static float[] scr

sphereShadowCacheList

public static IntArray sphereShadowCacheList

Cache and occlusion lists.

sphereOcclusionCacheList

public static IntArray sphereOcclusionCacheList

cylinderShadowCacheList

public static IntArray cylinderShadowCacheList

triangleShadowCacheList

public static IntArray triangleShadowCacheList

initialList

public static IntArray initialList

overallScale

public static double overallScale

Overall scale factor in the renderer.

Constructor Detail

ShadowCache

public ShadowCache()

Method Detail

prepareTriangleCacheList

public static void prepareTriangleCacheList(double x0,
                                            double y0,
                                            double z0,
                                            double x1,
                                            double y1,
                                            double z1,
                                            double x2,
                                            double y2,
                                            double z2,
                                            boolean targetIsTransparent)

Prepare shadow cache list for triangle, by making bounding volume a sphere that encloses the whole triangle.

prepareCylinderCacheList

public static void prepareCylinderCacheList(double c0x,
                                            double c0y,
                                            double c0z,
                                            double c1x,
                                            double c1y,
                                            double c1z,
                                            double r)

Prepare shadow cache list for cylinder, by making bounding volume a sphere that encloses the whole cylinder.

boundingSphereCylinder

public static void boundingSphereCylinder(double c0x,
                                          double c0y,
                                          double c0z,
                                          double c1x,
                                          double c1y,
                                          double c1z,
                                          double r,
                                          double[] bs)

Prepare bounding sphere that encloses cylinder.

boundingSphereTriangle

public static void boundingSphereTriangle(double x0,
                                          double y0,
                                          double z0,
                                          double x1,
                                          double y1,
                                          double z1,
                                          double x2,
                                          double y2,
                                          double z2,
                                          double[] bs)

Prepare bounding sphere that encloses cylinder.

prepareSphereCacheList

public static void prepareSphereCacheList(double sx,
                                          double sy,
                                          double sz,
                                          double sr,
                                          boolean transparent)

Prepare a list of objects that may obscure points on _this_ sphere. As we have scan line coherence, the cache list can be reused many times for a given sphere.

addSphereToCacheList

public static void addSphereToCacheList(double x,
                                        double y,
                                        double z,
                                        double r)

Add a sphere to the cache list.

addCylinderToCacheList

public static void addCylinderToCacheList(double x0,
                                          double y0,
                                          double z0,
                                          double x1,
                                          double y1,
                                          double z1,
                                          double r)

Add a cylinder to the cache list.

addTriangleToCacheList

public static void addTriangleToCacheList(double x0,
                                          double y0,
                                          double z0,
                                          double x1,
                                          double y1,
                                          double z1,
                                          double x2,
                                          double y2,
                                          double z2,
                                          int transparency)

Add a cylinder to the cache list.

selfShadowed

public static boolean selfShadowed(double nx,
                                   double ny,
                                   double nz,
                                   double tol)

Is the surface at this point self shadowing. i.e. does the normal point away from the light.

pointShadowed

public static boolean pointShadowed(double x,
                                    double y,
                                    double z)

Is this point shadowed by stuff in the shadow cache.

obscuredBySphere

public static boolean obscuredBySphere(int i,
                                       double x,
                                       double y,
                                       double z)

pointInSphere

public static boolean pointInSphere(double x,
                                    double y,
                                    double z)

Is this point in another sphere.

clearShadowCaches

public static void clearShadowCaches()

Clear out the shadow data structures.

setupShadowCaches

public static void setupShadowCaches(Light l0,
                                     double ovs)

Set up the shadow cache data structures for renderering.

intersect_triangle

public static int intersect_triangle(double[] orig,
                                     double[] dir,
                                     double[] vert0,
                                     double[] vert1,
                                     double[] vert2,
                                     double[] tuv)

main

public static void main(java.lang.String[] args)