Examples with BoundingBox com.jme3.bounding.BoundingBox used on opensource projects

Example 46 with BoundingBox

use of com.jme3.bounding.BoundingBox in project jmonkeyengine by jMonkeyEngine.

the class ShadowUtil method computeUnionBound.

/**
     * Compute bounds of a geomList
     * @param list
     * @param mat
     * @return
     */
public static BoundingBox computeUnionBound(GeometryList list, Matrix4f mat) {
    BoundingBox bbox = new BoundingBox();
    TempVars tempv = TempVars.get();
    for (int i = 0; i < list.size(); i++) {
        BoundingVolume vol = list.get(i).getWorldBound();
        BoundingVolume store = vol.transform(mat, tempv.bbox);
        //Nehon : prevent NaN and infinity values to screw the final bounding box
        if (!Float.isNaN(store.getCenter().x) && !Float.isInfinite(store.getCenter().x)) {
            bbox.mergeLocal(store);
        }
    }
    tempv.release();
    return bbox;
}

Example 47 with BoundingBox

use of com.jme3.bounding.BoundingBox in project jmonkeyengine by jMonkeyEngine.

the class ShadowUtil method updateShadowCamera.

/**
     * Updates the shadow camera to properly contain the given points (which
     * contain the eye camera frustum corners)
     *
     * @param shadowCam
     * @param points
     */
public static void updateShadowCamera(Camera shadowCam, Vector3f[] points) {
    boolean ortho = shadowCam.isParallelProjection();
    shadowCam.setProjectionMatrix(null);
    if (ortho) {
        shadowCam.setFrustum(-1, 1, -1, 1, 1, -1);
    } else {
        shadowCam.setFrustumPerspective(45, 1, 1, 150);
    }
    Matrix4f viewProjMatrix = shadowCam.getViewProjectionMatrix();
    Matrix4f projMatrix = shadowCam.getProjectionMatrix();
    BoundingBox splitBB = computeBoundForPoints(points, viewProjMatrix);
    TempVars vars = TempVars.get();
    Vector3f splitMin = splitBB.getMin(vars.vect1);
    Vector3f splitMax = splitBB.getMax(vars.vect2);
    //        splitMin.z = 0;
    // Create the crop matrix.
    float scaleX, scaleY, scaleZ;
    float offsetX, offsetY, offsetZ;
    scaleX = 2.0f / (splitMax.x - splitMin.x);
    scaleY = 2.0f / (splitMax.y - splitMin.y);
    offsetX = -0.5f * (splitMax.x + splitMin.x) * scaleX;
    offsetY = -0.5f * (splitMax.y + splitMin.y) * scaleY;
    scaleZ = 1.0f / (splitMax.z - splitMin.z);
    offsetZ = -splitMin.z * scaleZ;
    Matrix4f cropMatrix = vars.tempMat4;
    cropMatrix.set(scaleX, 0f, 0f, offsetX, 0f, scaleY, 0f, offsetY, 0f, 0f, scaleZ, offsetZ, 0f, 0f, 0f, 1f);
    Matrix4f result = new Matrix4f();
    result.set(cropMatrix);
    result.multLocal(projMatrix);
    vars.release();
    shadowCam.setProjectionMatrix(result);
}

Example 48 with BoundingBox

use of com.jme3.bounding.BoundingBox in project jmonkeyengine by jMonkeyEngine.

the class ShadowUtil method computeUnionBound.

/**
     * Compute bounds of a geomList
     * @param list
     * @param transform
     * @return
     */
public static BoundingBox computeUnionBound(GeometryList list, Transform transform) {
    BoundingBox bbox = new BoundingBox();
    TempVars tempv = TempVars.get();
    for (int i = 0; i < list.size(); i++) {
        BoundingVolume vol = list.get(i).getWorldBound();
        BoundingVolume newVol = vol.transform(transform, tempv.bbox);
        //Nehon : prevent NaN and infinity values to screw the final bounding box
        if (!Float.isNaN(newVol.getCenter().x) && !Float.isInfinite(newVol.getCenter().x)) {
            bbox.mergeLocal(newVol);
        }
    }
    tempv.release();
    return bbox;
}

Example 49 with BoundingBox

use of com.jme3.bounding.BoundingBox in project jmonkeyengine by jMonkeyEngine.

the class WireBox method makeGeometry.

/**
     * Create a geometry suitable for visualizing the specified bounding box.
     *
     * @param bbox the bounding box (not null)
     * @return a new Geometry instance in world space
     */
public static Geometry makeGeometry(BoundingBox bbox) {
    float xExtent = bbox.getXExtent();
    float yExtent = bbox.getYExtent();
    float zExtent = bbox.getZExtent();
    WireBox mesh = new WireBox(xExtent, yExtent, zExtent);
    Geometry result = new Geometry("bounding box", mesh);
    Vector3f center = bbox.getCenter();
    result.setLocalTranslation(center);
    return result;
}

Example 50 with BoundingBox

use of com.jme3.bounding.BoundingBox in project jmonkeyengine by jMonkeyEngine.

the class BoundingCollisionTest method testBoxBoxCollision.

@Test
public void testBoxBoxCollision() {
    BoundingBox box1 = new BoundingBox(Vector3f.ZERO, 1, 1, 1);
    BoundingBox box2 = new BoundingBox(Vector3f.ZERO, 1, 1, 1);
    checkCollision(box1, box2, 1);
    // Put it at the very edge - should still intersect.
    box2.setCenter(new Vector3f(2f, 0f, 0f));
    checkCollision(box1, box2, 1);
    // Put it a wee bit farther - no intersection expected
    box2.setCenter(new Vector3f(2f + FastMath.ZERO_TOLERANCE, 0, 0));
    checkCollision(box1, box2, 0);
    // Check the corners.
    box2.setCenter(new Vector3f(2f, 2f, 2f));
    checkCollision(box1, box2, 1);
    box2.setCenter(new Vector3f(2f, 2f, 2f + FastMath.ZERO_TOLERANCE));
    checkCollision(box1, box2, 0);
}