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

Example 21 with Triangle

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

the class TangentBinormalGenerator method processTriangle.

public static TriangleData processTriangle(int[] index, Vector3f[] v, Vector2f[] t) {
    TempVars tmp = TempVars.get();
    try {
        Vector3f edge1 = tmp.vect1;
        Vector3f edge2 = tmp.vect2;
        Vector2f edge1uv = tmp.vect2d;
        Vector2f edge2uv = tmp.vect2d2;
        Vector3f tangent = tmp.vect3;
        Vector3f binormal = tmp.vect4;
        Vector3f normal = tmp.vect5;
        t[1].subtract(t[0], edge1uv);
        t[2].subtract(t[0], edge2uv);
        float det = edge1uv.x * edge2uv.y - edge1uv.y * edge2uv.x;
        boolean normalize = false;
        if (Math.abs(det) < ZERO_TOLERANCE) {
            log.log(Level.WARNING, "Colinear uv coordinates for triangle " + "[{0}, {1}, {2}]; tex0 = [{3}, {4}], " + "tex1 = [{5}, {6}], tex2 = [{7}, {8}]", new Object[] { index[0], index[1], index[2], t[0].x, t[0].y, t[1].x, t[1].y, t[2].x, t[2].y });
            det = 1;
            normalize = true;
        }
        v[1].subtract(v[0], edge1);
        v[2].subtract(v[0], edge2);
        tangent.set(edge1);
        tangent.normalizeLocal();
        binormal.set(edge2);
        binormal.normalizeLocal();
        if (Math.abs(Math.abs(tangent.dot(binormal)) - 1) < ZERO_TOLERANCE) {
            log.log(Level.WARNING, "Vertices are on the same line " + "for triangle [{0}, {1}, {2}].", new Object[] { index[0], index[1], index[2] });
        }
        float factor = 1 / det;
        tangent.x = (edge2uv.y * edge1.x - edge1uv.y * edge2.x) * factor;
        tangent.y = (edge2uv.y * edge1.y - edge1uv.y * edge2.y) * factor;
        tangent.z = (edge2uv.y * edge1.z - edge1uv.y * edge2.z) * factor;
        if (normalize) {
            tangent.normalizeLocal();
        }
        binormal.x = (edge1uv.x * edge2.x - edge2uv.x * edge1.x) * factor;
        binormal.y = (edge1uv.x * edge2.y - edge2uv.x * edge1.y) * factor;
        binormal.z = (edge1uv.x * edge2.z - edge2uv.x * edge1.z) * factor;
        if (normalize) {
            binormal.normalizeLocal();
        }
        tangent.cross(binormal, normal);
        normal.normalizeLocal();
        return new TriangleData(tangent.clone(), binormal.clone(), normal.clone());
    } finally {
        tmp.release();
    }
}

Example 22 with Triangle

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

the class ParticleEmitter method read.

@Override
public void read(JmeImporter im) throws IOException {
    super.read(im);
    InputCapsule ic = im.getCapsule(this);
    shape = (EmitterShape) ic.readSavable("shape", DEFAULT_SHAPE);
    if (shape == DEFAULT_SHAPE) {
        // Prevent reference to static
        shape = shape.deepClone();
    }
    meshType = ic.readEnum("meshType", ParticleMesh.Type.class, ParticleMesh.Type.Triangle);
    int numParticles = ic.readInt("numParticles", 0);
    enabled = ic.readBoolean("enabled", true);
    particlesPerSec = ic.readFloat("particlesPerSec", 0);
    lowLife = ic.readFloat("lowLife", 0);
    highLife = ic.readFloat("highLife", 0);
    gravity = (Vector3f) ic.readSavable("gravity", null);
    imagesX = ic.readInt("imagesX", 1);
    imagesY = ic.readInt("imagesY", 1);
    startColor = (ColorRGBA) ic.readSavable("startColor", null);
    endColor = (ColorRGBA) ic.readSavable("endColor", null);
    startSize = ic.readFloat("startSize", 0);
    endSize = ic.readFloat("endSize", 0);
    worldSpace = ic.readBoolean("worldSpace", false);
    this.setIgnoreTransform(worldSpace);
    facingVelocity = ic.readBoolean("facingVelocity", false);
    faceNormal = (Vector3f) ic.readSavable("faceNormal", new Vector3f(Vector3f.NAN));
    selectRandomImage = ic.readBoolean("selectRandomImage", false);
    randomAngle = ic.readBoolean("randomAngle", false);
    rotateSpeed = ic.readFloat("rotateSpeed", 0);
    switch(meshType) {
        case Point:
            particleMesh = new ParticlePointMesh();
            this.setMesh(particleMesh);
            break;
        case Triangle:
            particleMesh = new ParticleTriMesh();
            this.setMesh(particleMesh);
            break;
        default:
            throw new IllegalStateException("Unrecognized particle type: " + meshType);
    }
    this.setNumParticles(numParticles);
    //        particleMesh.initParticleData(this, particles.length);
    //        particleMesh.setImagesXY(imagesX, imagesY);
    particleInfluencer = (ParticleInfluencer) ic.readSavable("influencer", DEFAULT_INFLUENCER);
    if (particleInfluencer == DEFAULT_INFLUENCER) {
        particleInfluencer = particleInfluencer.clone();
    }
    if (im.getFormatVersion() == 0) {
        // find it in the controls and take it out, then add the proper one in
        for (int i = 0; i < controls.size(); i++) {
            Object obj = controls.get(i);
            if (obj instanceof ParticleEmitter) {
                controls.remove(i);
                // now add the proper one in
                controls.add(new ParticleEmitterControl(this));
                break;
            }
        }
        // compatability before gravity was not a vector but a float
        if (gravity == null) {
            gravity = new Vector3f();
            gravity.y = ic.readFloat("gravity", 0);
        }
    } else {
        // since the parentEmitter is not loaded, it must be
        // loaded separately
        control = getControl(ParticleEmitterControl.class);
        control.parentEmitter = this;
    }
}

Example 23 with Triangle

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

the class ParticleTriMesh method initParticleData.

//    private Particle[] particlesCopy;
@Override
public void initParticleData(ParticleEmitter emitter, int numParticles) {
    setMode(Mode.Triangles);
    this.emitter = emitter;
    //        particlesCopy = new Particle[numParticles];
    // set positions
    FloatBuffer pb = BufferUtils.createVector3Buffer(numParticles * 4);
    // if the buffer is already set only update the data
    VertexBuffer buf = getBuffer(VertexBuffer.Type.Position);
    if (buf != null) {
        buf.updateData(pb);
    } else {
        VertexBuffer pvb = new VertexBuffer(VertexBuffer.Type.Position);
        pvb.setupData(Usage.Stream, 3, Format.Float, pb);
        setBuffer(pvb);
    }
    // set colors
    ByteBuffer cb = BufferUtils.createByteBuffer(numParticles * 4 * 4);
    buf = getBuffer(VertexBuffer.Type.Color);
    if (buf != null) {
        buf.updateData(cb);
    } else {
        VertexBuffer cvb = new VertexBuffer(VertexBuffer.Type.Color);
        cvb.setupData(Usage.Stream, 4, Format.UnsignedByte, cb);
        cvb.setNormalized(true);
        setBuffer(cvb);
    }
    // set texcoords
    FloatBuffer tb = BufferUtils.createVector2Buffer(numParticles * 4);
    uniqueTexCoords = false;
    for (int i = 0; i < numParticles; i++) {
        tb.put(0f).put(1f);
        tb.put(1f).put(1f);
        tb.put(0f).put(0f);
        tb.put(1f).put(0f);
    }
    tb.flip();
    buf = getBuffer(VertexBuffer.Type.TexCoord);
    if (buf != null) {
        buf.updateData(tb);
    } else {
        VertexBuffer tvb = new VertexBuffer(VertexBuffer.Type.TexCoord);
        tvb.setupData(Usage.Static, 2, Format.Float, tb);
        setBuffer(tvb);
    }
    // set indices
    ShortBuffer ib = BufferUtils.createShortBuffer(numParticles * 6);
    for (int i = 0; i < numParticles; i++) {
        int startIdx = (i * 4);
        // triangle 1
        ib.put((short) (startIdx + 1)).put((short) (startIdx + 0)).put((short) (startIdx + 2));
        // triangle 2
        ib.put((short) (startIdx + 1)).put((short) (startIdx + 2)).put((short) (startIdx + 3));
    }
    ib.flip();
    buf = getBuffer(VertexBuffer.Type.Index);
    if (buf != null) {
        buf.updateData(ib);
    } else {
        VertexBuffer ivb = new VertexBuffer(VertexBuffer.Type.Index);
        ivb.setupData(Usage.Static, 3, Format.UnsignedShort, ib);
        setBuffer(ivb);
    }
    updateCounts();
}

Example 24 with Triangle

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

the class TriangulatedTexture method castToUVS.

/**
     * This method alters the images to fit them into UV coordinates of the
     * given target texture.
     * 
     * @param targetTexture
     *            the texture to whose UV coordinates we fit current images
     * @param blenderContext
     *            the blender context
     */
public void castToUVS(TriangulatedTexture targetTexture, BlenderContext blenderContext) {
    int[] sourceSize = new int[2], targetSize = new int[2];
    ImageLoader imageLoader = new ImageLoader();
    TextureHelper textureHelper = blenderContext.getHelper(TextureHelper.class);
    for (TriangleTextureElement entry : faceTextures) {
        TriangleTextureElement targetFaceTextureElement = targetTexture.getFaceTextureElement(entry.faceIndex);
        Vector2f[] dest = targetFaceTextureElement.uv;
        // get the sizes of the source and target images
        sourceSize[0] = entry.image.getWidth();
        sourceSize[1] = entry.image.getHeight();
        targetSize[0] = targetFaceTextureElement.image.getWidth();
        targetSize[1] = targetFaceTextureElement.image.getHeight();
        // create triangle transformation
        AffineTransform affineTransform = textureHelper.createAffineTransform(entry.uv, dest, sourceSize, targetSize);
        // compute the result texture
        BufferedImage sourceImage = ImageToAwt.convert(entry.image, false, true, 0);
        BufferedImage targetImage = new BufferedImage(targetSize[0], targetSize[1], sourceImage.getType());
        Graphics2D g = targetImage.createGraphics();
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g.drawImage(sourceImage, affineTransform, null);
        g.dispose();
        Image output = imageLoader.load(targetImage, false);
        entry.image = output;
        entry.uv[0].set(dest[0]);
        entry.uv[1].set(dest[1]);
        entry.uv[2].set(dest[2]);
    }
}

Example 25 with Triangle

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

the class UVProjectionGenerator method tubeProjection.

/**
     * Tube projection for 2D textures.
     * 
     * @param positions
     *            points to be projected
     * @param bt
     *            the bounding tube for projecting
     * @return UV coordinates after the projection
     */
public static float[] tubeProjection(float[] positions, BoundingTube bt) {
    float[] uvCoordinates = new float[positions.length / 3 * 2];
    Vector3f v = new Vector3f();
    float cx = bt.getCenter().x, cz = bt.getCenter().z;
    Vector3f uBase = new Vector3f(0, 0, -1);
    float vBase = bt.getCenter().y - bt.getHeight() * 0.5f;
    for (int i = 0, j = 0; i < positions.length; i += 3, j += 2) {
        // calculating U
        v.set(positions[i] - cx, 0, positions[i + 2] - cz);
        v.normalizeLocal();
        // result between [0; PI]
        float angle = v.angleBetween(uBase);
        if (v.x < 0) {
            // the angle should be greater than PI, we're on the other part of the image then
            angle = FastMath.TWO_PI - angle;
        }
        uvCoordinates[j] = angle / FastMath.TWO_PI;
        // calculating V
        float y = positions[i + 1];
        uvCoordinates[j + 1] = (y - vBase) / bt.getHeight();
    }
    // looking for splitted triangles
    Triangle triangle = new Triangle();
    for (int i = 0; i < positions.length; i += 9) {
        triangle.set(0, positions[i], positions[i + 1], positions[i + 2]);
        triangle.set(1, positions[i + 3], positions[i + 4], positions[i + 5]);
        triangle.set(2, positions[i + 6], positions[i + 7], positions[i + 8]);
        float sgn1 = Math.signum(triangle.get1().x - cx);
        float sgn2 = Math.signum(triangle.get2().x - cx);
        float sgn3 = Math.signum(triangle.get3().x - cx);
        float xSideFactor = sgn1 + sgn2 + sgn3;
        float ySideFactor = Math.signum(triangle.get1().z - cz) + Math.signum(triangle.get2().z - cz) + Math.signum(triangle.get3().z - cz);
        if ((xSideFactor > -3 || xSideFactor < 3) && ySideFactor < 0) {
            // the triangle is on the splitting plane
            if (sgn1 == 1.0f) {
                uvCoordinates[i / 3 * 2] += 1.0f;
            }
            if (sgn2 == 1.0f) {
                uvCoordinates[(i / 3 + 1) * 2] += 1.0f;
            }
            if (sgn3 == 1.0f) {
                uvCoordinates[(i / 3 + 2) * 2] += 1.0f;
            }
        }
    }
    return uvCoordinates;
}