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

Example 36 with Triangle

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

the class TerrainQuad method getNormal.

protected Vector3f getNormal(float x, float z, Vector2f xz) {
    x -= 0.5f;
    z -= 0.5f;
    float col = FastMath.floor(x);
    float row = FastMath.floor(z);
    boolean onX = false;
    if (// what triangle to interpolate on
    1 - (x - col) - (z - row) < 0)
        onX = true;
    // v1--v2  ^
    // |  / |  |
    // | /  |  |
    // v3--v4  | Z
    //         |
    // <-------Y
    //     X
    Vector3f n1 = getMeshNormal((int) FastMath.ceil(x), (int) FastMath.ceil(z));
    Vector3f n2 = getMeshNormal((int) FastMath.floor(x), (int) FastMath.ceil(z));
    Vector3f n3 = getMeshNormal((int) FastMath.ceil(x), (int) FastMath.floor(z));
    Vector3f n4 = getMeshNormal((int) FastMath.floor(x), (int) FastMath.floor(z));
    return n1.add(n2).add(n3).add(n4).normalize();
}