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

Example 11 with Transform

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

the class Spatial method lookAt.

/**
     * <code>lookAt</code> is a convenience method for auto-setting the local
     * rotation based on a position in world space and an up vector. It computes the rotation
     * to transform the z-axis to point onto 'position' and the y-axis to 'up'.
     * Unlike {@link Quaternion#lookAt(com.jme3.math.Vector3f, com.jme3.math.Vector3f) }
     * this method takes a world position to look at and not a relative direction.
     *
     * Note : 28/01/2013 this method has been fixed as it was not taking into account the parent rotation.
     * This was resulting in improper rotation when the spatial had rotated parent nodes.
     * This method is intended to work in world space, so no matter what parent graph the
     * spatial has, it will look at the given position in world space.
     *
     * @param position
     *            where to look at in terms of world coordinates
     * @param upVector
     *            a vector indicating the (local) up direction. (typically {0,
     *            1, 0} in jME.)
     */
public void lookAt(Vector3f position, Vector3f upVector) {
    Vector3f worldTranslation = getWorldTranslation();
    TempVars vars = TempVars.get();
    Vector3f compVecA = vars.vect4;
    compVecA.set(position).subtractLocal(worldTranslation);
    getLocalRotation().lookAt(compVecA, upVector);
    if (getParent() != null) {
        Quaternion rot = vars.quat1;
        rot = rot.set(parent.getWorldRotation()).inverseLocal().multLocal(getLocalRotation());
        rot.normalizeLocal();
        setLocalRotation(rot);
    }
    vars.release();
    setTransformRefresh();
}

Example 12 with Transform

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

the class MultiPassLightingLogic method render.

@Override
public void render(RenderManager renderManager, Shader shader, Geometry geometry, LightList lights, int lastTexUnit) {
    Renderer r = renderManager.getRenderer();
    Uniform lightDir = shader.getUniform("g_LightDirection");
    Uniform lightColor = shader.getUniform("g_LightColor");
    Uniform lightPos = shader.getUniform("g_LightPosition");
    Uniform ambientColor = shader.getUniform("g_AmbientLightColor");
    boolean isFirstLight = true;
    boolean isSecondLight = false;
    getAmbientColor(lights, false, ambientLightColor);
    for (int i = 0; i < lights.size(); i++) {
        Light l = lights.get(i);
        if (l instanceof AmbientLight) {
            continue;
        }
        if (isFirstLight) {
            // set ambient color for first light only
            ambientColor.setValue(VarType.Vector4, ambientLightColor);
            isFirstLight = false;
            isSecondLight = true;
        } else if (isSecondLight) {
            ambientColor.setValue(VarType.Vector4, ColorRGBA.Black);
            // apply additive blending for 2nd and future lights
            r.applyRenderState(ADDITIVE_LIGHT);
            isSecondLight = false;
        }
        TempVars vars = TempVars.get();
        Quaternion tmpLightDirection = vars.quat1;
        Quaternion tmpLightPosition = vars.quat2;
        ColorRGBA tmpLightColor = vars.color;
        Vector4f tmpVec = vars.vect4f1;
        ColorRGBA color = l.getColor();
        tmpLightColor.set(color);
        tmpLightColor.a = l.getType().getId();
        lightColor.setValue(VarType.Vector4, tmpLightColor);
        switch(l.getType()) {
            case Directional:
                DirectionalLight dl = (DirectionalLight) l;
                Vector3f dir = dl.getDirection();
                //FIXME : there is an inconstency here due to backward
                //compatibility of the lighting shader.
                //The directional light direction is passed in the
                //LightPosition uniform. The lighting shader needs to be
                //reworked though in order to fix this.
                tmpLightPosition.set(dir.getX(), dir.getY(), dir.getZ(), -1);
                lightPos.setValue(VarType.Vector4, tmpLightPosition);
                tmpLightDirection.set(0, 0, 0, 0);
                lightDir.setValue(VarType.Vector4, tmpLightDirection);
                break;
            case Point:
                PointLight pl = (PointLight) l;
                Vector3f pos = pl.getPosition();
                float invRadius = pl.getInvRadius();
                tmpLightPosition.set(pos.getX(), pos.getY(), pos.getZ(), invRadius);
                lightPos.setValue(VarType.Vector4, tmpLightPosition);
                tmpLightDirection.set(0, 0, 0, 0);
                lightDir.setValue(VarType.Vector4, tmpLightDirection);
                break;
            case Spot:
                SpotLight sl = (SpotLight) l;
                Vector3f pos2 = sl.getPosition();
                Vector3f dir2 = sl.getDirection();
                float invRange = sl.getInvSpotRange();
                float spotAngleCos = sl.getPackedAngleCos();
                tmpLightPosition.set(pos2.getX(), pos2.getY(), pos2.getZ(), invRange);
                lightPos.setValue(VarType.Vector4, tmpLightPosition);
                //We transform the spot direction in view space here to save 5 varying later in the lighting shader
                //one vec4 less and a vec4 that becomes a vec3
                //the downside is that spotAngleCos decoding happens now in the frag shader.
                tmpVec.set(dir2.getX(), dir2.getY(), dir2.getZ(), 0);
                renderManager.getCurrentCamera().getViewMatrix().mult(tmpVec, tmpVec);
                tmpLightDirection.set(tmpVec.getX(), tmpVec.getY(), tmpVec.getZ(), spotAngleCos);
                lightDir.setValue(VarType.Vector4, tmpLightDirection);
                break;
            case Probe:
                break;
            default:
                throw new UnsupportedOperationException("Unknown type of light: " + l.getType());
        }
        vars.release();
        r.setShader(shader);
        renderMeshFromGeometry(r, geometry);
    }
    if (isFirstLight) {
        // Either there are no lights at all, or only ambient lights.
        // Render a dummy "normal light" so we can see the ambient color.
        ambientColor.setValue(VarType.Vector4, getAmbientColor(lights, false, ambientLightColor));
        lightColor.setValue(VarType.Vector4, ColorRGBA.BlackNoAlpha);
        lightPos.setValue(VarType.Vector4, NULL_DIR_LIGHT);
        r.setShader(shader);
        renderMeshFromGeometry(r, geometry);
    }
}

Example 13 with Transform

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

the class CameraControl method controlUpdate.

// fields used, when inversing ControlDirection:
@Override
protected void controlUpdate(float tpf) {
    if (spatial != null && camera != null) {
        switch(controlDir) {
            case SpatialToCamera:
                camera.setLocation(spatial.getWorldTranslation());
                camera.setRotation(spatial.getWorldRotation());
                break;
            case CameraToSpatial:
                // set the localtransform, so that the worldtransform would be equal to the camera's transform.
                // Location:
                TempVars vars = TempVars.get();
                Vector3f vecDiff = vars.vect1.set(camera.getLocation()).subtractLocal(spatial.getWorldTranslation());
                spatial.setLocalTranslation(vecDiff.addLocal(spatial.getLocalTranslation()));
                // Rotation:
                Quaternion worldDiff = vars.quat1.set(camera.getRotation()).subtractLocal(spatial.getWorldRotation());
                spatial.setLocalRotation(worldDiff.addLocal(spatial.getLocalRotation()));
                vars.release();
                break;
        }
    }
}

Example 14 with Transform

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

the class Quaternion method lookAt.

/**
     * <code>lookAt</code> is a convienence method for auto-setting the
     * quaternion based on a direction and an up vector. It computes
     * the rotation to transform the z-axis to point into 'direction'
     * and the y-axis to 'up'.
     *
     * @param direction
     *            where to look at in terms of local coordinates
     * @param up
     *            a vector indicating the local up direction.
     *            (typically {0, 1, 0} in jME.)
     */
public void lookAt(Vector3f direction, Vector3f up) {
    TempVars vars = TempVars.get();
    vars.vect3.set(direction).normalizeLocal();
    vars.vect1.set(up).crossLocal(direction).normalizeLocal();
    vars.vect2.set(direction).crossLocal(vars.vect1).normalizeLocal();
    fromAxes(vars.vect1, vars.vect2, vars.vect3);
    vars.release();
}

Example 15 with Transform

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

the class FbxBindPose method buildTransform.

private static Matrix4f buildTransform(double[] transform) {
    float[] m = new float[transform.length];
    for (int i = 0; i < transform.length; ++i) m[i] = (float) transform[i];
    Matrix4f matrix = new Matrix4f();
    matrix.set(m, false);
    return matrix;
}