Examples of com.jme3.renderer.Camera

com.jme3.renderer.Camera
Camera is a standalone, purely mathematical class for doing camera-related computations.
Given input data such as location, orientation (direction, left, up), and viewport settings, it can compute data necessary to render objects with the graphics library. Two matrices are generated, the view matrix transforms objects from world space into eye space, while the projection matrix transforms objects from eye space into clip space.

Another purpose of the camera class is to do frustum culling operations, defined by six planes which define a 3D frustum shape, it is possible to test if an object bounded by a mathematically defined volume is inside the camera frustum, and thus to avoid rendering objects that are outside the frustum
@author Mark Powell @author Joshua Slack

        debugfrustums = true;
    }


    //debug only : displays depth shadow maps
    protected void displayShadowMap(Renderer r) {
        Camera cam = viewPort.getCamera();
        renderManager.setCamera(cam, true);
        int h = cam.getHeight();
        for (int i = 0; i < dispPic.length; i++) {
            dispPic[i].setPosition((128 * i) + (150 + 64 * (i + 1)), h / 20f);
            dispPic[i].setWidth(128);
            dispPic[i].setHeight(128);
            dispPic[i].updateGeometricState();

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        }
        if (!noOccluders) {
            //setting params to recieving geometry list
            setMatParams();


            Camera cam = viewPort.getCamera();
            //some materials in the scene does not have a post shadow technique so we're using the fall back material
            if (needsfallBackMaterial) {
                renderManager.setForcedMaterial(postshadowMat);
            }

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     */
    public BasicShadowRenderer(AssetManager manager, int size) {
        shadowFB = new FrameBuffer(size, size, 1);
        shadowMap = new Texture2D(size, size, Format.Depth);
        shadowFB.setDepthTexture(shadowMap);
        shadowCam = new Camera(size, size);
        
         //DO NOT COMMENT THIS (it prevent the OSX incomplete read buffer crash)
        dummyTex = new Texture2D(size, size, Format.RGBA8);        
        shadowFB.setColorTexture(dummyTex);
        shadowMapSize = (float)size;

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        }


        GeometryList receivers = rq.getShadowQueueContent(ShadowMode.Receive);


        // update frustum points based on current camera
        Camera viewCam = viewPort.getCamera();
        ShadowUtil.updateFrustumPoints(viewCam,
                viewCam.getFrustumNear(),
                viewCam.getFrustumFar(),
                1.0f,
                points);


        Vector3f frustaCenter = new Vector3f();
        for (Vector3f point : points) {

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        init(shadowMapSize);
    }


    
    private void init(int shadowMapSize) {
        shadowCam = new Camera(shadowMapSize, shadowMapSize);
        for (int i = 0; i < points.length; i++) {
            points[i] = new Vector3f();
        }
    }

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        if (nbShadowMaps != nbSplits) {
            throw new IllegalArgumentException("Number of splits must be between 1 and 4. Given value : " + nbSplits);
        }
        splits = new ColorRGBA();
        splitsArray = new float[nbSplits + 1];
        shadowCam = new Camera(shadowMapSize, shadowMapSize);
        shadowCam.setParallelProjection(true);
        for (int i = 0; i < points.length; i++) {
            points[i] = new Vector3f();
        }
    }

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    }


    private void init(int shadowMapSize) {
        shadowCams = new Camera[CAM_NUMBER];
        for (int i = 0; i < CAM_NUMBER; i++) {
            shadowCams[i] = new Camera(shadowMapSize, shadowMapSize);
        }
    }

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    }


    protected void renderShadowMap(int shadowMapIndex, GeometryList occluders, GeometryList receivers) {
        shadowMapOccluders = getOccludersToRender(shadowMapIndex, occluders, receivers, shadowMapOccluders);
        Camera shadowCam = getShadowCam(shadowMapIndex);


        //saving light view projection matrix for this split            
        lightViewProjectionsMatrices[shadowMapIndex].set(shadowCam.getViewProjectionMatrix());
        renderManager.setCamera(shadowCam, false);


        renderManager.getRenderer().setFrameBuffer(shadowFB[shadowMapIndex]);
        renderManager.getRenderer().clearBuffers(false, true, false);

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        debugfrustums = true;
    }


    //debug only : displays depth shadow maps
    protected void displayShadowMap(Renderer r) {
        Camera cam = viewPort.getCamera();
        renderManager.setCamera(cam, true);
        int h = cam.getHeight();
        for (int i = 0; i < dispPic.length; i++) {
            dispPic[i].setPosition((128 * i) + (150 + 64 * (i + 1)), h / 20f);
            dispPic[i].setWidth(128);
            dispPic[i].setHeight(128);
            dispPic[i].updateGeometricState();

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        if (lightReceivers.size() != 0) {
            //setting params to recieving geometry list
            setMatParams();


            Camera cam = viewPort.getCamera();
            //some materials in the scene does not have a post shadow technique so we're using the fall back material
            if (needsfallBackMaterial) {
                renderManager.setForcedMaterial(postshadowMat);
            }

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