Example usage for javax.media.j3d TriangleArray setNormal

Introduction

In this page you can find the example usage for javax.media.j3d TriangleArray setNormal.

Prototype

public void setNormal(int index, float normal[]) 

Source Link

Document

Sets the normal associated with the vertex at the specified index for this object.

Usage

From source file:AppearanceTest.java

public Tetrahedron() {
    int i;//from  w w w . ja  v a 2s . c o  m

    TriangleArray tetra = new TriangleArray(12,
            TriangleArray.COORDINATES | TriangleArray.NORMALS | TriangleArray.TEXTURE_COORDINATE_2);

    tetra.setCoordinates(0, verts);
    for (i = 0; i < 12; i++) {
        tetra.setTextureCoordinate(0, i, texCoord[i % 3]);
    }

    int face;
    Vector3f normal = new Vector3f();
    Vector3f v1 = new Vector3f();
    Vector3f v2 = new Vector3f();
    Point3f[] pts = new Point3f[3];
    for (i = 0; i < 3; i++)
        pts[i] = new Point3f();

    for (face = 0; face < 4; face++) {
        tetra.getCoordinates(face * 3, pts);
        v1.sub(pts[1], pts[0]);
        v2.sub(pts[2], pts[0]);
        normal.cross(v1, v2);
        normal.normalize();
        for (i = 0; i < 3; i++) {
            tetra.setNormal((face * 3 + i), normal);
        }
    }
    this.setGeometry(tetra);
    this.setAppearance(new Appearance());
}

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From source file:TickTockPicking.java

public Tetrahedron() {
    int i;/*from  w ww  .jav  a2 s .  c o  m*/

    TriangleArray tetra = new TriangleArray(12,
            TriangleArray.COORDINATES | TriangleArray.NORMALS | TriangleArray.TEXTURE_COORDINATE_2);

    tetra.setCoordinates(0, verts);
    for (i = 0; i < 12; i++) {
        tetra.setTextureCoordinate(0, i, texCoord[i % 3]);
    }

    int face;
    Vector3f normal = new Vector3f();
    Vector3f v1 = new Vector3f();
    Vector3f v2 = new Vector3f();
    Point3f[] pts = new Point3f[3];
    for (i = 0; i < 3; i++)
        pts[i] = new Point3f();

    for (face = 0; face < 4; face++) {
        tetra.getCoordinates(face * 3, pts);
        v1.sub(pts[1], pts[0]);
        v2.sub(pts[2], pts[0]);
        normal.cross(v1, v2);
        normal.normalize();
        for (i = 0; i < 3; i++) {
            tetra.setNormal((face * 3 + i), normal);
        }
    }

    tetra.setCapability(Geometry.ALLOW_INTERSECT);

    this.setGeometry(tetra);
    this.setAppearance(new Appearance());
}

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