graphicscontext3d.java

JAVA3D矩陈的相关类

            AppearanceRetained appRetained = (AppearanceRetained)appearance.retained;
            if(appRetained.texture != null) {
                assert (appRetained.texUnitState == null);
                texRetained = appRetained.texture;
                images = texRetained.getImages();
                if(images != null) {
                    for(int i=0; i<images.length; i++) {
                        if(images[i] != null) {
                            ImageComponentRetained imageRetained = (ImageComponentRetained) images[i].retained;
                            // Do illegal sharing check
                            if(imageRetained.getUsedByOffScreen()) {
                                throw new IllegalSharingException(J3dI18N.getString("GraphicsContext3D30"));
                            }
                        }
                    }
                }
            }
            else if(appRetained.texUnitState != null) {
                for(int j=0; j<appRetained.texUnitState.length; j++) {
                    texRetained = appRetained.texUnitState[j].texture;
                    images = texRetained.getImages();
                    if(images != null) {
                        for(int i=0; i<images.length; i++) {
                            if(images[i] != null) {
                                ImageComponentRetained imageRetained = (ImageComponentRetained) images[i].retained;
                                // Do illegal sharing check
                                if(imageRetained.getUsedByOffScreen()) {
                                    throw new IllegalSharingException(J3dI18N.getString("GraphicsContext3D30"));
                                }
                            }
                        }
                    }        
                }           
            }
        }

        uAppearance = appearance;
        if ((canvas3d.view == null) || 
	    (canvas3d.view.universe == null) ||
	    (!canvas3d.view.active) ||
	    (Thread.currentThread() == canvas3d.screen.renderer)) {
            doSetAppearance(appearance);
        } else if (Thread.currentThread() ==
		   canvas3d.view.universe.behaviorScheduler) {
            sendRenderMessage(false, GraphicsContext3D.SET_APPEARANCE, appearance, null);
        } else {
            sendRenderMessage(true, GraphicsContext3D.SET_APPEARANCE, appearance, null);
        }
    }
    
    void doSetAppearance(Appearance appearance) {
        // Appearance can't be null. See setAppearance().
        assert(appearance != null);
        
        NodeComponentRetained nc;
        nc = ((AppearanceRetained)appearance.retained).material;
        if (nc != null) {
            nc.setInImmCtx(true);
            enableLighting = ((MaterialRetained) nc).lightingEnable;
            dRed = ((MaterialRetained) nc).diffuseColor.x;
            dGreen = ((MaterialRetained) nc).diffuseColor.y;
            dBlue = ((MaterialRetained) nc).diffuseColor.z;
        } else {
            enableLighting = false;
        }
        
        if(appearance instanceof ShaderAppearance){ 
            // Handle ShaderProgramRetained.
            ShaderProgramRetained spR = ((ShaderAppearanceRetained)appearance.retained).shaderProgram;
            if(spR != null) {
                spR.setInImmCtx(true);
                Shader[] sArray = spR.getShaders();
                if(sArray != null) {
                    for (int i = 0 ; i < sArray.length; i++) {
                        if (sArray[i] != null) {
                            ((ShaderRetained)sArray[i].retained).setInImmCtx(true);
                        }
                    }
                }
            }

            //Handle ShaderAttributeSetRetained.
            ShaderAttributeSetRetained sasR = 
                        ((ShaderAppearanceRetained)appearance.retained).shaderAttributeSet;
            if(sasR != null) {
                sasR.setInImmCtx(true);
                ShaderAttribute[] saArray = sasR.getAll();
                if(saArray != null) {
                    for (int i = 0 ; i < saArray.length; i++) {
                        if (saArray[i] != null) {
                            ((ShaderAttributeRetained)saArray[i].retained).setInImmCtx(true);
                        }
                    }
                }
            }
        }
        
        if (((AppearanceRetained)appearance.retained).texUnitState != null) {
            TextureUnitStateRetained[] texUnitState =
                    ((AppearanceRetained)appearance.retained).texUnitState;
            
            for (int i = 0 ; i < texUnitState.length; i++) {
                if (texUnitState[i] != null) {
                    texUnitState[i].setInImmCtx(true);
                }
            }
        }
        
        nc = ((AppearanceRetained)appearance.retained).texture;
        if (nc != null) {
            nc.setInImmCtx(true);
        }
        
        nc = ((AppearanceRetained)appearance.retained).texCoordGeneration;
        if (nc != null) {
            nc.setInImmCtx(true);
        }
        
        nc = ((AppearanceRetained)appearance.retained).textureAttributes;
        if (nc != null) {
            nc.setInImmCtx(true);
        }
        
        nc = ((AppearanceRetained)appearance.retained).coloringAttributes;
        if (nc != null) {
            nc.setInImmCtx(true);
            red = ((ColoringAttributesRetained)nc).color.x;
            green = ((ColoringAttributesRetained)nc).color.y;
            blue = ((ColoringAttributesRetained)nc).color.z;
        } else {
            red = 1.0f;
            green = 1.0f;
            blue = 1.0f;
        }
        
        nc = ((AppearanceRetained)appearance.retained).transparencyAttributes;
        if (nc != null) {
            nc.setInImmCtx(true);
            alpha = 1.0f - ((TransparencyAttributesRetained) nc).transparency;
        } else {
            alpha = 1.0f;
        }
        
        nc = ((AppearanceRetained)appearance.retained).renderingAttributes;
        if (nc != null) {
            nc.setInImmCtx(true);
            visible = ((RenderingAttributesRetained)nc).visible;
        } else
            visible = true;
        
        nc = ((AppearanceRetained)appearance.retained).polygonAttributes;
        if (nc != null) {
            nc.setInImmCtx(true);
            polygonMode = ((PolygonAttributesRetained)nc).polygonMode;
        } else {
            polygonMode = PolygonAttributes.POLYGON_FILL;
        }
        
        nc = ((AppearanceRetained)appearance.retained).lineAttributes;
        if (nc != null) {
            nc.setInImmCtx(true);
            lineAA = ((LineAttributesRetained)nc).lineAntialiasing;
            
        } else {
            lineAA = false;
        }
        
        nc = ((AppearanceRetained)appearance.retained).pointAttributes;
        if (nc != null) {
            if (nc.source.isLive())
                nc.setInImmCtx(true);
            pointAA = ((PointAttributesRetained)nc).pointAntialiasing;
        } else {
            pointAA = false;
        }
        
        // Reset the inImmCtx flag of this.appearance.
        if (this.appearance != null) {
            AppearanceRetained app = (AppearanceRetained)this.appearance.retained;
            app.setInImmCtx(false);
            if (app.material != null) {
                app.material.setInImmCtx(false);
            }
            
            if(app instanceof ShaderAppearanceRetained){
                // Handle ShaderProgramRetained.
                ShaderProgramRetained spR = ((ShaderAppearanceRetained)app).shaderProgram;
                if(spR != null) {
                    spR.setInImmCtx(false);
                    Shader[] sArray = spR.getShaders();
                    if(sArray != null) {
                        for (int i = 0 ; i < sArray.length; i++) {
                            if (sArray[i] != null) {
                                ((ShaderRetained)sArray[i].retained).setInImmCtx(false);
                            }
                        }
                    }
                }
                
                //Handle ShaderAttributeSetRetained.
                ShaderAttributeSetRetained sasR = ((ShaderAppearanceRetained)app).shaderAttributeSet;
                if(sasR != null) {
                    sasR.setInImmCtx(false);
                    ShaderAttribute[] saArray = sasR.getAll();
                    if(saArray != null) {
                        for (int i = 0 ; i < saArray.length; i++) {
                            if (saArray[i] != null) {
                                ((ShaderAttributeRetained)saArray[i].retained).setInImmCtx(false);
                            }
                        }
                    }
                }
            }
            
            if (app.texUnitState != null) {
                for (int i = 0; i < app.texUnitState.length; i++) {
                    if (app.texUnitState[0] != null)
                        app.texUnitState[0].setInImmCtx(false);
                }
            }
            if (app.texture != null) {
                app.texture.setInImmCtx(false);
            }
            if (app.texCoordGeneration != null) {
                app.texCoordGeneration.setInImmCtx(false);
            }
            if (app.textureAttributes != null) {
                app.textureAttributes.setInImmCtx(false);
            }
            if (app.coloringAttributes != null) {
                app.coloringAttributes.setInImmCtx(false);
            }
            if (app.transparencyAttributes != null) {
                app.transparencyAttributes.setInImmCtx(false);
            }
            if (app.renderingAttributes != null) {
                app.renderingAttributes.setInImmCtx(false);
            }
            if (app.polygonAttributes != null) {
                app.polygonAttributes.setInImmCtx(false);
            }
            if (app.lineAttributes != null) {
                app.lineAttributes.setInImmCtx(false);
            }
            if (app.pointAttributes != null) {
                app.pointAttributes.setInImmCtx(false);
            }
        }
        
        ((AppearanceRetained)appearance.retained).setInImmCtx(true);   
        this.appearance = appearance;
    }

    /**
     * Retrieves the current Appearance component object.
     * @return the current Appearance object
     */
    public Appearance getAppearance() {
	return this.uAppearance;
    }

    /**
     * Sets the current Background to the specified Background
     * leaf node object.
     * The graphics context stores a reference to the specified 
     * Background node. This means that the application may modify 
     * the background color or image by using the appropriate 
     * methods on the Background node. The Background node must 
     * not be part of a live scene graph, nor may it subsequently 
     * be made part of a live scene graph-an IllegalSharingException 
     * is thrown in such cases. If the Background object is null, 
     * the default background color of black (0,0,0) is used to clear
     * the canvas prior to rendering a new frame. The Background 
     * node's application region is ignored for immediate-mode 
     * rendering.
     *
     * @param background the new Background object
     *
     * @exception IllegalSharingException if the Background node
     * is part of or is subsequently made part of a live scene graph.
     *
     * @exception IllegalSharingException if the specified background node
     * refers to an ImageComponent2D that is being used by a Canvas3D as
     * an off-screen buffer.
     */
    public void setBackground(Background background) {
        
        if (background.isLive()) {
           throw new IllegalSharingException(J3dI18N.getString("GraphicsContext3D11"));
        }
        BackgroundRetained bgRetained = (BackgroundRetained)background.retained;
        ImageComponent2D image = bgRetained.getImage();
        if(image != null) {
            ImageComponent2DRetained imageRetained = (ImageComponent2DRetained) image.retained;
            if(imageRetained.getUsedByOffScreen()) {
                throw new IllegalSharingException(J3dI18N.getString("GraphicsContext3D31"));
            }
        }

        if (((BackgroundRetained)background.retained).geometryBranch != null) {
           throw new IllegalSharingException(J3dI18N.getString("GraphicsContext3D22"));
        }
        
        uBackground = background;
        if ((canvas3d.view == null) || 
	    (canvas3d.view.universe == null) ||
	    (!canvas3d.view.active) ||
	    (Thread.currentThread() == canvas3d.screen.renderer)) {
            doSetBackground(background);
        } else if (Thread.currentThread() ==
                        canvas3d.view.universe.behaviorScheduler) {
            sendRenderMessage(false, GraphicsContext3D.SET_BACKGROUND, background, null);
        } else {
            sendRenderMessage(true, GraphicsContext3D.SET_BACKGROUND, background, null);
        }
    }

    void doSetBackground(Background background) {
	BackgroundRetained bg; 

	if (this.background != null) {
	    bg = (BackgroundRetained)this.background.retained;
	    bg.setInImmCtx(false);
	}
	bg = (BackgroundRetained)background.retained;
	bg.setInImmCtx(true);

	this.background = background;
    }

    /**
     * Retrieves the current Background leaf node object.
     * @return the current Background object
     */
    public Background getBackground() {
	return this.uBackground;
    }

    /**
     * Sets the current Fog to the specified Fog
     * leaf node object.
     * The graphics context stores a reference to the specified 
     * Fog node. This means that the application may modify the 
     * fog attributes using the appropriate methods on the Fog 
     * node object. The Fog node must not be part of a live 
     * scene graph, nor may it subsequently be made part of a
     * live scene graph-an IllegalSharingException is thrown in 
     * such cases. If the Fog object is null, fog is disabled. 
     * Both the region of influence and the hierarchical scope 
     * of the Fog node are ignored for immediate-mode rendering.
     * @param fog the new Fog object
     * @exception IllegalSharingException if the Fog node
     * is part of or is subsequently made part of a live scene graph.
     */
    public void setFog(Fog fog) {
        if (fog != null && fog.isLive()) {
           throw new IllegalSharingException(J3dI18N.getString("GraphicsContext3D12"));
        }
        uFog = fog;
        if ((canvas3d.view == null) || 
	    (canvas3d.view.universe == null) ||
	    (!canvas3d.view.active) ||