Examples with Vector3f com.jme3.math.Vector3f used on opensource projects

Example 21 with Vector3f

use of com.jme3.math.Vector3f in project jmonkeyengine by jMonkeyEngine.

the class BoundingBox method computeFromTris.

public void computeFromTris(int[] indices, Mesh mesh, int start, int end) {
    if (end - start <= 0) {
        return;
    }
    TempVars vars = TempVars.get();
    Vector3f vect1 = vars.vect1;
    Vector3f vect2 = vars.vect2;
    Triangle triangle = vars.triangle;
    Vector3f min = vect1.set(Float.POSITIVE_INFINITY, Float.POSITIVE_INFINITY, Float.POSITIVE_INFINITY);
    Vector3f max = vect2.set(Float.NEGATIVE_INFINITY, Float.NEGATIVE_INFINITY, Float.NEGATIVE_INFINITY);
    Vector3f point;
    for (int i = start; i < end; i++) {
        mesh.getTriangle(indices[i], triangle);
        point = triangle.get(0);
        checkMinMax(min, max, point);
        point = triangle.get(1);
        checkMinMax(min, max, point);
        point = triangle.get(2);
        checkMinMax(min, max, point);
    }
    center.set(min.addLocal(max));
    center.multLocal(0.5f);
    xExtent = max.x - center.x;
    yExtent = max.y - center.y;
    zExtent = max.z - center.z;
    vars.release();
}

Example 22 with Vector3f

use of com.jme3.math.Vector3f in project jmonkeyengine by jMonkeyEngine.

the class BoundingCollisionTest method testBoxRayCollision.

@Test
public void testBoxRayCollision() {
    BoundingBox box = new BoundingBox(Vector3f.ZERO, 1, 1, 1);
    Ray ray = new Ray(Vector3f.ZERO, Vector3f.UNIT_Z);
    // XXX: seems incorrect, ray inside box should only generate
    // one result...
    checkCollision(box, ray, 2);
    ray.setOrigin(new Vector3f(0, 0, -5));
    checkCollision(box, ray, 2);
    // XXX: is this right? the ray origin is on the box's side..
    ray.setOrigin(new Vector3f(0, 0, 2f));
    checkCollision(box, ray, 0);
    ray.setOrigin(new Vector3f(0, 0, -2f));
    checkCollision(box, ray, 2);
    // parallel to the edge, touching the side
    ray.setOrigin(new Vector3f(0, 1f, -2f));
    checkCollision(box, ray, 2);
    // still parallel, but not touching the side
    ray.setOrigin(new Vector3f(0, 1f + FastMath.ZERO_TOLERANCE, -2f));
    checkCollision(box, ray, 0);
}

Example 23 with Vector3f

use of com.jme3.math.Vector3f in project jmonkeyengine by jMonkeyEngine.

the class BoundingCollisionTest method testSphereSphereCollision.

@Test
public void testSphereSphereCollision() {
    BoundingSphere sphere1 = new BoundingSphere(1, Vector3f.ZERO);
    BoundingSphere sphere2 = new BoundingSphere(1, Vector3f.ZERO);
    checkCollision(sphere1, sphere2, 1);
    // Put it at the very edge - should still intersect.
    sphere2.setCenter(new Vector3f(2f, 0f, 0f));
    checkCollision(sphere1, sphere2, 1);
    // Put it a wee bit farther - no intersection expected
    sphere2.setCenter(new Vector3f(2f + FastMath.ZERO_TOLERANCE, 0, 0));
    checkCollision(sphere1, sphere2, 0);
}

Example 24 with Vector3f

use of com.jme3.math.Vector3f in project jmonkeyengine by jMonkeyEngine.

the class BoundingCollisionTest method testBoxSphereCollision.

@Test
public void testBoxSphereCollision() {
    BoundingBox box1 = new BoundingBox(Vector3f.ZERO, 1, 1, 1);
    BoundingSphere sphere2 = new BoundingSphere(1, Vector3f.ZERO);
    checkCollision(box1, sphere2, 1);
    // Put it at the very edge - for sphere vs. box, it will not intersect
    sphere2.setCenter(new Vector3f(2f, 0f, 0f));
    checkCollision(box1, sphere2, 0);
    // Put it a wee bit closer - should intersect.
    sphere2.setCenter(new Vector3f(2f - FastMath.ZERO_TOLERANCE, 0, 0));
    checkCollision(box1, sphere2, 1);
    // Test if the algorithm converts the sphere 
    // to a box before testing the collision (incorrect)
    float sqrt3 = FastMath.sqrt(3);
    sphere2.setCenter(Vector3f.UNIT_XYZ.mult(2));
    sphere2.setRadius(sqrt3);
    checkCollision(box1, sphere2, 0);
    // Make it a wee bit larger.
    sphere2.setRadius(sqrt3 + FastMath.ZERO_TOLERANCE);
    checkCollision(box1, sphere2, 1);
}

Example 25 with Vector3f

use of com.jme3.math.Vector3f in project jmonkeyengine by jMonkeyEngine.

the class LightFilterTest method testSpotFiltering.

@Test
public void testSpotFiltering() {
    SpotLight sl = new SpotLight(Vector3f.ZERO, Vector3f.UNIT_Z);
    sl.setSpotRange(0);
    geom.addLight(sl);
    // Infinite spot lights are only filtered
    checkFilteredLights(1);
    // if the geometry is outside the infinite cone.
    TempVars vars = TempVars.get();
    try {
        // The spot is not touching the near plane of the camera yet, 
        // should still be culled.
        sl.setSpotRange(1f - FastMath.ZERO_TOLERANCE);
        assert !sl.intersectsFrustum(cam, vars);
        // should be culled from the geometry's PoV
        checkFilteredLights(0);
        // Now it touches the near plane.
        sl.setSpotRange(1f);
        // still culled from the geometry's PoV
        checkFilteredLights(0);
        assert sl.intersectsFrustum(cam, vars);
    } finally {
        vars.release();
    }
    // make it barely reach the geometry
    sl.setSpotRange(9f);
    checkFilteredLights(0);
    // make it reach the geometry (touching its bound)
    sl.setSpotRange(9f + FastMath.ZERO_TOLERANCE);
    checkFilteredLights(1);
    // rotate the cone a bit so it no longer faces the geom
    sl.setDirection(new Vector3f(0.316f, 0, 0.948f).normalizeLocal());
    checkFilteredLights(0);
    // extent the range much farther
    sl.setSpotRange(20);
    checkFilteredLights(0);
    // Create box of size X=10 (double the extent)
    // now, the spot will touch the box.
    geom.setMesh(new Box(5, 1, 1));
    checkFilteredLights(1);
    // ==================================
    // Tests for bounding sphere, with a radius of 1f (in the box geom)
    sl.setPosition(Vector3f.ZERO);
    sl.setDirection(Vector3f.UNIT_Z);
    geom.setLocalTranslation(Vector3f.ZERO);
    geom.setModelBound(new BoundingSphere(1f, Vector3f.ZERO));
    // Infinit spot lights are only filtered
    // if the geometry is outside the infinite cone.
    sl.setSpotRange(0);
    checkFilteredLights(1);
    //the geommetry is outside the infinit cone (cone direction going away from the geom)
    sl.setPosition(Vector3f.UNIT_Z.mult(1 + FastMath.ZERO_TOLERANCE));
    checkFilteredLights(0);
    //place the spote ligth in the corner of the box geom, (in order to test bounding sphere)
    sl.setDirection(new Vector3f(1, 1, 0).normalizeLocal());
    geom.setLocalTranslation(0, 0, 10);
    sl.setPosition(sl.getDirection().mult(-2f).add(geom.getLocalTranslation()));
    // make it barely reach the sphere, incorect with a box
    sl.setSpotRange(1f - FastMath.ZERO_TOLERANCE);
    checkFilteredLights(0);
    // make it reach the sphere
    sl.setSpotRange(1f + FastMath.ZERO_TOLERANCE);
    checkFilteredLights(1);
    // extent the range
    sl.setPosition(Vector3f.ZERO);
    sl.setDirection(Vector3f.UNIT_Z);
    sl.setSpotRange(20);
    checkFilteredLights(1);
    // rotate the cone a bit so it no longer faces the geom
    sl.setDirection(new Vector3f(0, 0.3f, 0.7f).normalizeLocal());
    checkFilteredLights(0);
    // Create sphere of size X=10 (double the radius)
    // now, the spot will touch the sphere.
    geom.setModelBound(new BoundingSphere(5f, Vector3f.ZERO));
    checkFilteredLights(1);
}