Example usage for com.badlogic.gdx.math Vector3 isZero

Introduction

In this page you can find the example usage for com.badlogic.gdx.math Vector3 isZero.

Prototype

@Override
    public boolean isZero() 

Source Link

Usage

From source file:gaia.cu9.ari.gaiaorbit.util.g3d.MeshBuilder2.java

License:Apache License

@Override
public void arrow(float x1, float y1, float z1, float x2, float y2, float z2, float capLength,
        float stemThickness, int divisions) {
    Vector3 begin = tmp(x1, y1, z1), end = tmp(x2, y2, z2);
    float length = begin.dst(end);
    float coneHeight = length * capLength;
    float coneDiameter = 2 * (float) (coneHeight * Math.sqrt(1f / 3));
    float stemLength = length - coneHeight;
    float stemDiameter = coneDiameter * stemThickness;

    Vector3 up = tmp(end).sub(begin).nor();
    Vector3 forward = tmp(up).crs(Vector3.Z);
    if (forward.isZero())
        forward.set(Vector3.X);// w  w w  . ja v a2s.  c  o m
    forward.crs(up).nor();
    Vector3 left = tmp(up).crs(forward).nor();
    Vector3 direction = tmp(end).sub(begin).nor();

    // Matrices
    Matrix4 userTransform = getVertexTransform(tmp());
    Matrix4 transform = tmp();
    float[] val = transform.val;
    val[Matrix4.M00] = left.x;
    val[Matrix4.M01] = up.x;
    val[Matrix4.M02] = forward.x;
    val[Matrix4.M10] = left.y;
    val[Matrix4.M11] = up.y;
    val[Matrix4.M12] = forward.y;
    val[Matrix4.M20] = left.z;
    val[Matrix4.M21] = up.z;
    val[Matrix4.M22] = forward.z;
    Matrix4 temp = tmp();

    // Stem
    transform.setTranslation(tmp(direction).scl(stemLength / 2).add(x1, y1, z1));
    setVertexTransform(temp.set(transform).mul(userTransform));
    cylinder(stemDiameter, stemLength, stemDiameter, divisions);

    // Cap
    transform.setTranslation(tmp(direction).scl(stemLength).add(x1, y1, z1));
    setVertexTransform(temp.set(transform).mul(userTransform));
    cone(coneDiameter, coneHeight, coneDiameter, divisions);

    setVertexTransform(userTransform);
    cleanup();
}

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