Cinder

00001 /*
00002  Copyright (c) 2010, The Barbarian Group
00003  All rights reserved.
00004 
00005  Redistribution and use in source and binary forms, with or without modification, are permitted provided that
00006  the following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice, this list of conditions and
00009     the following disclaimer.
00010     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
00011     the following disclaimer in the documentation and/or other materials provided with the distribution.
00012 
00013  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
00014  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00015  PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
00016  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00017  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00018  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00019  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00020  POSSIBILITY OF SUCH DAMAGE.
00021 */
00022 
00023 #pragma once
00024 
00025 #include "cinder/Cinder.h"
00026 #include "cinder/gl/gl.h"
00027 #include "cinder/Exception.h"
00028 #include "cinder/Surface.h"
00029 #include "cinder/Camera.h"
00030 
00031 namespace cinder { namespace gl {
00032 
00033 class TileRender {
00034   public:
00035     TileRender( int32_t imageWidth, int32_t imageHeight, int32_t tileWidth = 512, int32_t tileHeight = 512 );
00036     
00037     bool        nextTile();
00038     
00039     int32_t     getImageWidth() const { return mImageWidth; }
00040     int32_t     getImageHeight() const { return mImageHeight; }
00041     float       getImageAspectRatio() const { return mImageWidth / (float)mImageHeight; }
00042     Area        getCurrentTileArea() const { return mCurrentArea; }
00043     Surface     getSurface() const { return mSurface; }
00044     
00045     void        setMatricesWindow( int32_t windowWidth, int32_t windowHeight );
00046     void        setMatrices( const Camera &camera );
00047 
00048     void        frustum( float left, float right, float bottom, float top, float nearPlane, float farPlane );
00049     void        ortho( float left, float right, float bottom, float top, float nearPlane, float farPlane );
00050     
00051   protected:
00052     void        updateFrustum();
00053 
00054     int32_t     mImageWidth, mImageHeight;
00055     int32_t     mTileWidth, mTileHeight;
00056     int32_t     mNumTilesX, mNumTilesY;
00057 
00058     int32_t     mCurrentTile;
00059     Area        mCurrentArea;
00060     Rectf       mCurrentFrustumCoords;
00061     float       mCurrentFrustumNear, mCurrentFrustumFar;
00062     bool        mCurrentFrustumPersp;
00063     
00064     Area        mSavedViewport;
00065     Surface     mSurface;
00066 };
00067 
00068 } } // namespace cinder::gl
Cinder

include/cinder/gl/TileRender.h
