Examples of javax.media.j3d.PointLight

javax.media.j3d.PointLight
The PointLight object specifies an attenuated light source at a fixed point in space that radiates light equally in all directions away from the light source. PointLight has the same attributes as a Light node, with the addition of location and attenuation parameters.
A point light contributes to diffuse and specular reflections, which in turn depend on the orientation and position of a surface. A point light does not contribute to ambient reflections.
A PointLight is attenuated by multiplying the contribution of the light by an attenuation factor. The attenuation factor causes the the PointLight's brightness to decrease as distance from the light source increases. A PointLight's attenuation factor contains three values:
- Constant attenuation
- Linear attenuation
- Quadratic attenuation
A PointLight is attenuated by the reciprocal of the sum of:
By default, the constant attenuation value is 1 and the other two values are 0, resulting in no attenuation.

    appear2.setMaterial(material);


    final Box box2 = new Box();
    box2.setAppearance(appear2);


    final PointLight pointLight1 = new PointLight();
    pointLight1.setPosition(2, 2, 2);
    pointLight1.setColor(new Color3f(1f, 1f, 1f));
    pointLight1.setInfluencingBounds(new BoundingSphere(new Point3d(0, 0, 0),
        999));


    final PointLight pointLight2 = new PointLight();
    pointLight2.setPosition(2, 2, -2);
    pointLight2.setColor(new Color3f(1f, 1f, 0f));
    pointLight2.setInfluencingBounds(new BoundingSphere(new Point3d(0, 0, 0),
        999));


    final PointLight pointLight3 = new PointLight();
    pointLight3.setPosition(2, -2, 2);
    pointLight3.setColor(new Color3f(1f, 0f, 1f));
    pointLight3.setInfluencingBounds(new BoundingSphere(new Point3d(0, 0, 0),
        999));


    final PointLight pointLight4 = new PointLight();
    pointLight4.setPosition(-2, 2, 2);
    pointLight4.setColor(new Color3f(1f, 0f, 0f));
    pointLight4.setInfluencingBounds(new BoundingSphere(new Point3d(0, 0, 0),
        999));


    final PointLight pointLight5 = new PointLight();
    pointLight5.setPosition(2, -2, -2);
    pointLight5.setColor(new Color3f(1f, 0f, 0f));
    pointLight5.setInfluencingBounds(new BoundingSphere(new Point3d(0, 0, 0),
        999));


    final PointLight pointLight6 = new PointLight();
    pointLight6.setPosition(-2, 2, -2);
    pointLight6.setColor(new Color3f(0f, 0f, 0f));
    pointLight6.setInfluencingBounds(new BoundingSphere(new Point3d(0, 0, 0),
        999));


    final PointLight pointLight7 = new PointLight();
    pointLight7.setPosition(-2, -2, 2);
    pointLight7.setColor(new Color3f(0f, 0.5f, 1f));
    pointLight7.setInfluencingBounds(new BoundingSphere(new Point3d(0, 0, 0),
        999));


    final PointLight pointLight8 = new PointLight();
    pointLight8.setPosition(-2, -2, -2);
    pointLight8.setColor(new Color3f(0f, 0.5f, 1f));
    pointLight8.setInfluencingBounds(new BoundingSphere(new Point3d(0, 0, 0),
        999));


    // neue Transform Informationen


    // neue Branchgruppe

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/* 194 */     switch (this.type) {
/*     */     case 0:
/* 196 */       this.light = new DirectionalLight(this.color, defaultDir);
/* 197 */       break;
/*     */     case 1:
/* 199 */       this.light = new PointLight(this.color, defaultPos, this.attenuation);
/* 200 */       break;
/*     */     case 2:
/* 203 */       this.light = new SpotLight(this.color, defaultPos, this.attenuation, defaultDir, 2.0F * this.spotConeAngle, 0.0F);
/*     */ 
/* 205 */       break;

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/* 66 */     ((PointLight)this.node).setAttenuation(this.control.readPoint3f(in));
/* 67 */     ((PointLight)this.node).setPosition(this.control.readPoint3f(in));
/*    */   }
/*    */ 
/*    */   protected SceneGraphObject createNode() {
/* 71 */     return new PointLight();
/*    */   }

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    private static TransformGroup makeLight(int x, int z) {
        final Vector3d position = new Vector3d(x, HEIGHT / 2, z);
        final Transform3D transform = Transforms.translation(position);
        final TransformGroup transformGroup = new TransformGroup(transform);


        final PointLight light = new PointLight();
        light.setInfluencingBounds(new BoundingSphere(new Point3d(position), 20));
        light.setAttenuation(0, 0, 1);
        
        transformGroup.addChild(light);
        return transformGroup;
    }

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