use of com.jme3.collision.CollisionResults in project jmonkeyengine by jMonkeyEngine.
the class BIHNode method intersectWhere.
public final int intersectWhere(Ray r, Matrix4f worldMatrix, BIHTree tree, float sceneMin, float sceneMax, CollisionResults results) {
TempVars vars = TempVars.get();
ArrayList<BIHStackData> stack = vars.bihStack;
stack.clear();
// float tHit = Float.POSITIVE_INFINITY;
Vector3f o = vars.vect1.set(r.getOrigin());
Vector3f d = vars.vect2.set(r.getDirection());
Matrix4f inv = vars.tempMat4.set(worldMatrix).invertLocal();
inv.mult(r.getOrigin(), r.getOrigin());
// Fixes rotation collision bug
inv.multNormal(r.getDirection(), r.getDirection());
// inv.multNormalAcross(r.getDirection(), r.getDirection());
float[] origins = { r.getOrigin().x, r.getOrigin().y, r.getOrigin().z };
float[] invDirections = { 1f / r.getDirection().x, 1f / r.getDirection().y, 1f / r.getDirection().z };
r.getDirection().normalizeLocal();
Vector3f v1 = vars.vect3, v2 = vars.vect4, v3 = vars.vect5;
int cols = 0;
stack.add(new BIHStackData(this, sceneMin, sceneMax));
stackloop: while (stack.size() > 0) {
BIHStackData data = stack.remove(stack.size() - 1);
BIHNode node = data.node;
float tMin = data.min, tMax = data.max;
if (tMax < tMin) {
continue;
}
leafloop: while (node.axis != 3) {
// while node is not a leaf
int a = node.axis;
// find the origin and direction value for the given axis
float origin = origins[a];
float invDirection = invDirections[a];
float tNearSplit, tFarSplit;
BIHNode nearNode, farNode;
tNearSplit = (node.leftPlane - origin) * invDirection;
tFarSplit = (node.rightPlane - origin) * invDirection;
nearNode = node.left;
farNode = node.right;
if (invDirection < 0) {
float tmpSplit = tNearSplit;
tNearSplit = tFarSplit;
tFarSplit = tmpSplit;
BIHNode tmpNode = nearNode;
nearNode = farNode;
farNode = tmpNode;
}
if (tMin > tNearSplit && tMax < tFarSplit) {
continue stackloop;
}
if (tMin > tNearSplit) {
tMin = max(tMin, tFarSplit);
node = farNode;
} else if (tMax < tFarSplit) {
tMax = min(tMax, tNearSplit);
node = nearNode;
} else {
stack.add(new BIHStackData(farNode, max(tMin, tFarSplit), tMax));
tMax = min(tMax, tNearSplit);
node = nearNode;
}
}
// a leaf
for (int i = node.leftIndex; i <= node.rightIndex; i++) {
tree.getTriangle(i, v1, v2, v3);
float t = r.intersects(v1, v2, v3);
if (!Float.isInfinite(t)) {
if (worldMatrix != null) {
worldMatrix.mult(v1, v1);
worldMatrix.mult(v2, v2);
worldMatrix.mult(v3, v3);
float t_world = new Ray(o, d).intersects(v1, v2, v3);
t = t_world;
}
Vector3f contactNormal = Triangle.computeTriangleNormal(v1, v2, v3, null);
Vector3f contactPoint = new Vector3f(d).multLocal(t).addLocal(o);
float worldSpaceDist = o.distance(contactPoint);
CollisionResult cr = new CollisionResult(contactPoint, worldSpaceDist);
cr.setContactNormal(contactNormal);
cr.setTriangleIndex(tree.getTriangleIndex(i));
results.addCollision(cr);
cols++;
}
}
}
vars.release();
r.setOrigin(o);
r.setDirection(d);
return cols;
}
use of com.jme3.collision.CollisionResults in project jmonkeyengine by jMonkeyEngine.
the class BIHNode method intersectBrute.
public final int intersectBrute(Ray r, Matrix4f worldMatrix, BIHTree tree, float sceneMin, float sceneMax, CollisionResults results) {
float tHit = Float.POSITIVE_INFINITY;
TempVars vars = TempVars.get();
Vector3f v1 = vars.vect1, v2 = vars.vect2, v3 = vars.vect3;
int cols = 0;
ArrayList<BIHStackData> stack = vars.bihStack;
stack.clear();
stack.add(new BIHStackData(this, 0, 0));
stackloop: while (stack.size() > 0) {
BIHStackData data = stack.remove(stack.size() - 1);
BIHNode node = data.node;
leafloop: while (node.axis != 3) {
// while node is not a leaf
BIHNode nearNode, farNode;
nearNode = node.left;
farNode = node.right;
stack.add(new BIHStackData(farNode, 0, 0));
node = nearNode;
}
// a leaf
for (int i = node.leftIndex; i <= node.rightIndex; i++) {
tree.getTriangle(i, v1, v2, v3);
if (worldMatrix != null) {
worldMatrix.mult(v1, v1);
worldMatrix.mult(v2, v2);
worldMatrix.mult(v3, v3);
}
float t = r.intersects(v1, v2, v3);
if (t < tHit) {
tHit = t;
Vector3f contactPoint = new Vector3f(r.direction).multLocal(tHit).addLocal(r.origin);
CollisionResult cr = new CollisionResult(contactPoint, tHit);
cr.setTriangleIndex(tree.getTriangleIndex(i));
results.addCollision(cr);
cols++;
}
}
}
vars.release();
return cols;
}
use of com.jme3.collision.CollisionResults in project jmonkeyengine by jMonkeyEngine.
the class BoundingBox method collideWith.
@Override
public int collideWith(Collidable other, CollisionResults results) {
if (other instanceof Ray) {
Ray ray = (Ray) other;
return collideWithRay(ray, results);
} else if (other instanceof Triangle) {
Triangle t = (Triangle) other;
if (intersects(t.get1(), t.get2(), t.get3())) {
CollisionResult r = new CollisionResult();
results.addCollision(r);
return 1;
}
return 0;
} else if (other instanceof BoundingVolume) {
if (intersects((BoundingVolume) other)) {
CollisionResult r = new CollisionResult();
results.addCollision(r);
return 1;
}
return 0;
} else if (other instanceof Spatial) {
return ((Spatial) other).collideWith(this, results);
} else {
throw new UnsupportedCollisionException("With: " + other.getClass().getSimpleName());
}
}
use of com.jme3.collision.CollisionResults in project jmonkeyengine by jMonkeyEngine.
the class TestJoystick method pick.
private static CollisionResults pick(Camera cam, Vector2f mouseLoc, Node node) {
CollisionResults results = new CollisionResults();
Ray ray = new Ray();
Vector3f pos = new Vector3f(mouseLoc.x, mouseLoc.y, -1);
Vector3f dir = new Vector3f(mouseLoc.x, mouseLoc.y, 1);
dir.subtractLocal(pos).normalizeLocal();
ray.setOrigin(pos);
ray.setDirection(dir);
node.collideWith(ray, results);
return results;
}
use of com.jme3.collision.CollisionResults in project jmonkeyengine by jMonkeyEngine.
the class TestJoystick method pickGamePad.
private void pickGamePad(Vector2f mouseLoc) {
if (lastButton != null) {
CollisionResults cresults = pick(cam, mouseLoc, gamepad);
for (CollisionResult cr : cresults) {
Node n = cr.getGeometry().getParent();
if (n != null && (n instanceof ButtonView)) {
String b = ((ButtonView) n).getName().substring("Button:".length());
String name = lastButton.getJoystick().getName().replaceAll(" ", "\\\\ ");
String id = lastButton.getLogicalId().replaceAll(" ", "\\\\ ");
System.out.println(name + "." + id + "=" + b);
return;
}
}
}
}
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