Example usage for com.badlogic.gdx.math Matrix4 setTranslation

Introduction

In this page you can find the example usage for com.badlogic.gdx.math Matrix4 setTranslation.

Prototype

public Matrix4 setTranslation(Vector3 vector) 

Source Link

Document

Sets the 4th column to the translation vector.

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);//from   w  w  w  .j  a  v  a2s .  c om
    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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