KGLLib

batch.h

00001 /*
00002  * Copyright (C) 2008 Rivo Laks <rivolaks@hot.ee>
00003  *
00004  * This library is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Lesser General Public
00006  * License as published by the Free Software Foundation; either 
00007  * version 2.1 of the License, or (at your option) any later version.
00008  *
00009  * This library is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * Library General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public 
00015  * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
00016  */
00017 
00018 #ifndef KGLLIB_BATCH_H
00019 #define KGLLIB_BATCH_H
00020 
00021 #include "kgllib.h"
00022 #include "geometrybuffer.h"
00023 #include <QList>
00024 #include <Eigen/Core>
00025 
00026 
00027 namespace KGLLib
00028 {
00029 class GeometryBuffer;
00030 
00100 class KGLLIB_EXPORT Batch
00101 {
00102 public:
00110     Batch();
00120     Batch(GeometryBuffer* buffer, int offset, int indexOffset);
00121 
00126     virtual ~Batch();
00127 
00134     virtual void render();
00135 
00141     virtual void bind();
00149     virtual void renderOnce();
00153     virtual void unbind();
00154 
00160     void setVertexCount(int count);
00164     int vertexCount() const  { return mVertexCount; }
00165 
00169     void setVertices(Eigen::Vector2f* vertices)  { setVertices(vertices, 2); }
00170     void setVertices(Eigen::Vector3f* vertices)  { setVertices(vertices, 3); }
00171     void setVertices(Eigen::Vector4f* vertices)  { setVertices(vertices, 4); }
00175     const void* verticesArray() const  { return mVertices; }
00179     void setColors(Eigen::Vector3f* colors)  { setColors(colors, 3); }
00180     void setColors(Eigen::Vector4f* colors)  { setColors(colors, 4); }
00184     const void* colorsArray() const  { return mColors; }
00188     void setNormals(Eigen::Vector3f* normals);
00192     const void* normalsArray() const  { return mNormals; }
00196     void setTexcoords(float* texcoords)  { setTexcoords(texcoords, 1); }
00197     void setTexcoords(Eigen::Vector2f* texcoords)  { setTexcoords(texcoords, 2); }
00198     void setTexcoords(Eigen::Vector3f* texcoords)  { setTexcoords(texcoords, 3); }
00199     void setTexcoords(Eigen::Vector4f* texcoords)  { setTexcoords(texcoords, 4); }
00203     const void* texcoordsArray() const  { return mTexcoords; }
00209     void setIndices(unsigned int* indices, int count);
00213     const void* indicesArray() const  { return mIndices; }
00217     int indicesCount() const  { return mIndexCount; }
00218 
00224     virtual void setPrimitiveType(GLenum type);
00228     GLenum primitiveType() const;
00229 
00237     virtual void update();
00238 
00242     GeometryBuffer* buffer() const  { return mBuffer; }
00259     void setBuffer(GeometryBuffer* buffer, int offset, int indexOffset);
00260 
00268     GeometryBufferFormat bestBufferFormat() const;
00269 
00281     static GeometryBuffer* createSharedBuffer(const QList<Batch*>& batches);
00282 
00283 protected:
00284     void setVertices(void* vertices, int size);
00285     void setColors(void* colors, int size);
00286     void setTexcoords(void* texcoords, int size);
00287 
00288     void init();
00289 
00290 private:
00291     // Pointers to corresponding arrays
00292     void* mVertices;
00293     void* mColors;
00294     void* mNormals;
00295     void* mTexcoords;
00296     // How many float components does each element have
00297     int mVertexSize;
00298     int mColorSize;
00299     int mNormalSize;
00300     int mTexcoordSize;
00301     // Indices array
00302     void* mIndices;
00303 
00304     int mVertexCount;
00305     int mIndexCount;
00306 
00307     bool mDirty;
00308     GLenum mPrimitiveType;
00309 
00310     GeometryBuffer* mBuffer;
00311     int mBufferOffset;
00312     int mBufferIndexOffset;
00313     bool mOwnBuffer;
00314 };
00315 
00316 }
00317 
00318 #endif
KGLLib

batch.h

KGLLib

API Reference
