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fix shadow disappearing when frustum in front of caster

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in-pass-shadows
Kirill Vainer 7 years ago
parent 0fae3839d3
commit 4b4bf24127
1 changed files with 58 additions and 57 deletions
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  1. 115
      jme3-core/src/main/java/com/jme3/shadow/ShadowUtil.java

115
jme3-core/src/main/java/com/jme3/shadow/ShadowUtil.java
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@ -32,7 +32,9 @@
package com.jme3.shadow;
import com.jme3.bounding.BoundingBox;
import com.jme3.bounding.BoundingSphere;
import com.jme3.bounding.BoundingVolume;
import com.jme3.collision.UnsupportedCollisionException;
import com.jme3.math.FastMath;
import com.jme3.math.Matrix4f;
import com.jme3.math.Transform;
@ -42,6 +44,7 @@ import com.jme3.renderer.Camera;
import com.jme3.renderer.ViewPort;
import com.jme3.renderer.queue.GeometryList;
import com.jme3.renderer.queue.RenderQueue;
import com.jme3.renderer.queue.RenderQueue.ShadowMode;
import com.jme3.scene.Geometry;
import com.jme3.scene.Node;
import com.jme3.scene.Spatial;
@ -295,46 +298,64 @@ public class ShadowUtil {
return casterCount;
}
private boolean intersectsIgnoreNearZ(BoundingBox splitBB, BoundingSphere occSphere) {
float distSqr = occSphere.getRadius() * occSphere.getRadius();
float minX = splitBB.getCenter().x - splitBB.getXExtent();
float maxX = splitBB.getCenter().x + splitBB.getXExtent();
float minY = splitBB.getCenter().y - splitBB.getYExtent();
float maxY = splitBB.getCenter().y + splitBB.getYExtent();
float maxZ = splitBB.getCenter().z + splitBB.getZExtent();
if (occSphere.getCenter().x < minX) distSqr -= FastMath.sqr(occSphere.getCenter().x - minX);
else if (occSphere.getCenter().x > maxX) distSqr -= FastMath.sqr(occSphere.getCenter().x - maxX);
if (occSphere.getCenter().y < minY) distSqr -= FastMath.sqr(occSphere.getCenter().y - minY);
else if (occSphere.getCenter().y > maxY) distSqr -= FastMath.sqr(occSphere.getCenter().y - maxY);
if (occSphere.getCenter().z > maxZ) distSqr -= FastMath.sqr(occSphere.getCenter().z - maxZ);
return distSqr > 0;
}
private boolean intersectsIgnoreNearZ(BoundingBox splitBB, BoundingBox occBB) {
if (splitBB.getCenter().x + splitBB.getXExtent() < occBB.getCenter().x - occBB.getXExtent()
|| splitBB.getCenter().x - splitBB.getXExtent() > occBB.getCenter().x + occBB.getXExtent()) {
return false;
} else if (splitBB.getCenter().y + splitBB.getYExtent() < occBB.getCenter().y - occBB.getYExtent()
|| splitBB.getCenter().y - splitBB.getYExtent() > occBB.getCenter().y + occBB.getYExtent()) {
return false;
} else if (splitBB.getCenter().z + splitBB.getZExtent() < occBB.getCenter().z - occBB.getZExtent()) {
return false;
} else {
return true;
}
}
private boolean intersectsIgnoreNearZ(BoundingBox splitBB, BoundingVolume occBV) {
if (occBV instanceof BoundingBox) {
return intersectsIgnoreNearZ(splitBB, (BoundingBox) occBV);
} else if (occBV instanceof BoundingSphere) {
return intersectsIgnoreNearZ(splitBB, (BoundingSphere) occBV);
} else {
throw new UnsupportedCollisionException("With: " + occBV.getClass().getSimpleName());
}
}
private void process(Spatial scene) {
if (scene.getCullHint() == Spatial.CullHint.Always) return;
RenderQueue.ShadowMode shadowMode = scene.getShadowMode();
if ( scene instanceof Geometry )
{
if (scene instanceof Geometry) {
// convert bounding box to light's viewproj space
Geometry occluder = (Geometry)scene;
if (shadowMode != RenderQueue.ShadowMode.Off && shadowMode != RenderQueue.ShadowMode.Receive
&& !occluder.isGrouped() && occluder.getWorldBound()!=null) {
Geometry occluder = (Geometry) scene;
ShadowMode shadowMode = scene.getShadowMode();
if (shadowMode != ShadowMode.Off && shadowMode != ShadowMode.Receive
&& !occluder.isGrouped()) {
BoundingVolume bv = occluder.getWorldBound();
BoundingVolume occBox = bv.transform(viewProjMatrix, vars.bbox);
boolean intersects = splitBB.intersects(occBox);
if (!intersects && occBox instanceof BoundingBox) {
BoundingBox occBB = (BoundingBox) occBox;
//Kirill 01/10/2011
// Extend the occluder further into the frustum
// This fixes shadow dissapearing issues when
// the caster itself is not in the view camera
// but its shadow is in the camera
// The number is in world units
occBB.setZExtent(occBB.getZExtent() + 50);
occBB.setCenter(occBB.getCenter().addLocal(0, 0, 25));
if (splitBB.intersects(occBB)) {
//Nehon : prevent NaN and infinity values to screw the final bounding box
if (!Float.isNaN(occBox.getCenter().x) && !Float.isInfinite(occBox.getCenter().x)) {
// To prevent extending the depth range too much
// We return the bound to its former shape
// Before adding it
occBB.setZExtent(occBB.getZExtent() - 50);
occBB.setCenter(occBB.getCenter().subtractLocal(0, 0, 25));
casterBB.mergeLocal(occBox);
casterCount++;
}
if (splitOccluders != null) {
splitOccluders.add(occluder);
}
}
} else if (intersects) {
if (intersectsIgnoreNearZ(splitBB, occBox)) {
casterBB.mergeLocal(occBox);
casterCount++;
if (splitOccluders != null) {
@ -342,30 +363,10 @@ public class ShadowUtil {
}
}
}
}
else if ( scene instanceof Node && ((Node)scene).getWorldBound()!=null )
{
Node nodeOcc = (Node)scene;
boolean intersects = false;
// some
BoundingVolume bv = nodeOcc.getWorldBound();
} else if (scene instanceof Node) {
BoundingVolume bv = scene.getWorldBound();
BoundingVolume occBox = bv.transform(viewProjMatrix, vars.bbox);
intersects = splitBB.intersects(occBox);
if (!intersects && occBox instanceof BoundingBox) {
BoundingBox occBB = (BoundingBox) occBox;
//Kirill 01/10/2011
// Extend the occluder further into the frustum
// This fixes shadow dissapearing issues when
// the caster itself is not in the view camera
// but its shadow is in the camera
// The number is in world units
occBB.setZExtent(occBB.getZExtent() + 50);
occBB.setCenter(occBB.getCenter().addLocal(0, 0, 25));
intersects = splitBB.intersects(occBB);
}
if ( intersects ) {
if (intersectsIgnoreNearZ(splitBB, occBox)) {
for (Spatial child : ((Node)scene).getChildren()) {
process(child);
}

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