Examples of com.ardor3d.renderer.Camera.lookAt()

com.ardor3d.renderer.Camera.lookAt()
A convenience method for auto-setting the frame based on a world position the user desires the camera to look at. It points the camera towards the given position using the difference between that position and the current camera location as a direction vector and the general worldUpVector to compute up and left camera vectors. @param pos where to look at in terms of world coordinates @param worldUpVector a normalized vector indicating the up direction of the world. (often {@link Vector3#UNIT_Y} or{@link Vector3#UNIT_Z})

        tmpVec.multiplyLocal(distance);
        tmpVec.addLocal(center);


        // temporary location
        shadowCam.setLocation(tmpVec);
        shadowCam.lookAt(center, Vector3.UNIT_Y);


        {
            // determine
            final double texelSizeW = (2 * radius) / _shadowMapRenderer.getWidth();
            final double texelSizeH = (2 * radius) / _shadowMapRenderer.getHeight();

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        final PointLight pl = (PointLight) _light;


        shadowCam.setLocation(pl.getLocation());


        // Point light at split center
        shadowCam.lookAt(center, Vector3.UNIT_Y);


        // Reset frustum
        distance = center.subtract(shadowCam.getLocation(), tmpVec).length();
        shadowCam.setFrustum(1, distance, -1, 1, 1, -1);

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        position.set((fMinX + fMaxX) * 0.5, (fMinY + fMaxY) * 0.5, 1.0, 1);
        shadowCam.getModelViewProjectionInverseMatrix().applyPre(position, position);
        position.divideLocal(position.getW());
        newCenter.set(position.getX(), position.getY(), position.getZ());


        shadowCam.lookAt(newCenter, Vector3.UNIT_Y);


        Vector3.releaseTempInstance(newCenter);
        Vector4.releaseTempInstance(position);


        shadowCam.setFrustum(fMinZ, fMaxZ, -width, width, height, -height);

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