joglrotategizmorenderer.java

基于java的3d开发库。对坐java3d的朋友有很大的帮助。

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//= Module history:                                                         =
//= - March 16 2006 - Oscar Chavarro: Original base version                 =
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package vsdk.toolkit.render.jogl;

import vsdk.toolkit.common.Vector3D;
import vsdk.toolkit.common.Matrix4x4;
import vsdk.toolkit.gui.RotateGizmo;
import javax.media.opengl.GL;

public class JoglRotateGizmoRenderer extends JoglRenderer 
{

    public static void draw(GL gl, RotateGizmo gizmo, Vector3D position)
    {
        Matrix4x4 R, giro;

        R = new Matrix4x4(gizmo.getTransformationMatrix());

        R.M[0][3] = position.x;
        R.M[1][3] = position.y;
        R.M[2][3] = position.z;

        gl.glLineWidth(3);
        JoglMatrixRenderer.draw(gl, R);
        gl.glLineWidth(1);

        double a;
        double delta = Math.toRadians(15);
        Vector3D agujax = new Vector3D(0.5, 0, 0);
        Vector3D agujay = new Vector3D(0, 0.5, 0);
        Vector3D agujaz = new Vector3D(0, 0, 0.5);
        Vector3D p;
        giro = new Matrix4x4();

        gl.glPushMatrix();
        JoglMatrixRenderer.activate(gl, R);
        gl.glColor3d(1, 0, 0);
        gl.glBegin(gl.GL_LINE_LOOP);
        for ( a = delta; a < Math.toRadians(360-delta); a += delta ) {
            giro.axisRotation(a, 1, 0, 0);
            p = giro.multiply(agujay);
            gl.glVertex3d(p.x, p.y, p.z);
        }
        gl.glEnd();
        gl.glPopMatrix();

        gl.glPushMatrix();
        JoglMatrixRenderer.activate(gl, R);
        gl.glColor3d(0, 1, 0);
        gl.glBegin(gl.GL_LINE_LOOP);
        for ( a = delta; a < Math.toRadians(360-delta); a += delta ) {
            giro.axisRotation(a, 0, 1, 0);
            p = giro.multiply(agujax);
            gl.glVertex3d(p.x, p.y, p.z);
        }
        gl.glEnd();
        gl.glPopMatrix();

        gl.glPushMatrix();
        JoglMatrixRenderer.activate(gl, R);
        gl.glColor3d(0, 0, 1);
        gl.glBegin(gl.GL_LINE_LOOP);
        for ( a = delta; a < Math.toRadians(360-delta); a += delta ) {
            giro.axisRotation(a, 0, 0, 1);
            p = giro.multiply(agujax);
            gl.glVertex3d(p.x, p.y, p.z);
        }
        gl.glEnd();
        gl.glPopMatrix();


    }
}

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//= EOF                                                                     =
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