Examples with Vector4f com.jme3.math.Vector4f used on opensource projects

Example 11 with Vector4f

use of com.jme3.math.Vector4f in project jmonkeyengine by jMonkeyEngine.

the class Camera method setClipPlane.

/**
     * Sets a clipPlane for this camera.
     * The clipPlane is used to recompute the
     * projectionMatrix using the plane as the near plane     
     * This technique is known as the oblique near-plane clipping method introduced by Eric Lengyel
     * more info here
     * <ul>
     * <li><a href="http://www.terathon.com/code/oblique.html">http://www.terathon.com/code/oblique.html</a>
     * <li><a href="http://aras-p.info/texts/obliqueortho.html">http://aras-p.info/texts/obliqueortho.html</a>
     * <li><a href="http://hacksoflife.blogspot.com/2008/12/every-now-and-then-i-come-across.html">http://hacksoflife.blogspot.com/2008/12/every-now-and-then-i-come-across.html</a>
     * </ul>
     *
     * Note that this will work properly only if it's called on each update, and be aware that it won't work properly with the sky bucket.
     * if you want to handle the sky bucket, look at how it's done in SimpleWaterProcessor.java
     * @param clipPlane the plane
     * @param side the side the camera stands from the plane
     */
public void setClipPlane(Plane clipPlane, Plane.Side side) {
    float sideFactor = 1;
    if (side == Plane.Side.Negative) {
        sideFactor = -1;
    }
    //we are on the other side of the plane no need to clip anymore.
    if (clipPlane.whichSide(location) == side) {
        return;
    }
    TempVars vars = TempVars.get();
    try {
        Matrix4f p = projectionMatrixOverride.set(projectionMatrix);
        Matrix4f ivm = viewMatrix;
        Vector3f point = clipPlane.getNormal().mult(clipPlane.getConstant(), vars.vect1);
        Vector3f pp = ivm.mult(point, vars.vect2);
        Vector3f pn = ivm.multNormal(clipPlane.getNormal(), vars.vect3);
        Vector4f clipPlaneV = vars.vect4f1.set(pn.x * sideFactor, pn.y * sideFactor, pn.z * sideFactor, -(pp.dot(pn)) * sideFactor);
        Vector4f v = vars.vect4f2.set(0, 0, 0, 0);
        v.x = (Math.signum(clipPlaneV.x) + p.m02) / p.m00;
        v.y = (Math.signum(clipPlaneV.y) + p.m12) / p.m11;
        v.z = -1.0f;
        v.w = (1.0f + p.m22) / p.m23;
        //clipPlaneV.x * v.x + clipPlaneV.y * v.y + clipPlaneV.z * v.z + clipPlaneV.w * v.w;
        float dot = clipPlaneV.dot(v);
        Vector4f c = clipPlaneV.multLocal(2.0f / dot);
        p.m20 = c.x - p.m30;
        p.m21 = c.y - p.m31;
        p.m22 = c.z - p.m32;
        p.m23 = c.w - p.m33;
        setProjectionMatrix(p);
    } finally {
        vars.release();
    }
}

Example 12 with Vector4f

use of com.jme3.math.Vector4f in project jmonkeyengine by jMonkeyEngine.

the class J3MOutputCapsule method formatMatParam.

private String formatMatParam(MatParam param) {
    VarType type = param.getVarType();
    Object val = param.getValue();
    switch(type) {
        case Boolean:
        case Float:
        case Int:
            return val.toString();
        case Vector2:
            Vector2f v2 = (Vector2f) val;
            return v2.getX() + " " + v2.getY();
        case Vector3:
            Vector3f v3 = (Vector3f) val;
            return v3.getX() + " " + v3.getY() + " " + v3.getZ();
        case Vector4:
            // can be either ColorRGBA, Vector4f or Quaternion
            if (val instanceof Vector4f) {
                Vector4f v4 = (Vector4f) val;
                return v4.getX() + " " + v4.getY() + " " + v4.getZ() + " " + v4.getW();
            } else if (val instanceof ColorRGBA) {
                ColorRGBA color = (ColorRGBA) val;
                return color.getRed() + " " + color.getGreen() + " " + color.getBlue() + " " + color.getAlpha();
            } else if (val instanceof Quaternion) {
                Quaternion quat = (Quaternion) val;
                return quat.getX() + " " + quat.getY() + " " + quat.getZ() + " " + quat.getW();
            } else {
                throw new UnsupportedOperationException("Unexpected Vector4 type: " + val);
            }
        default:
            // parameter type not supported in J3M
            return null;
    }
}