# Visualization Library

A lightweight C++ OpenGL middleware for 2D/3D graphics

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# D:/VL/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vlGraphics/DrawCall.hpp

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    00001 /**************************************************************************************/
    00002 /*                                                                                    */
    00003 /*  Visualization Library                                                             */
    00004 /*  http://www.visualizationlibrary.com                                               */
    00005 /*                                                                                    */
    00006 /*  Copyright (c) 2005-2010, Michele Bosi                                             */
    00007 /*  All rights reserved.                                                              */
    00008 /*                                                                                    */
    00009 /*  Redistribution and use in source and binary forms, with or without modification,  */
    00010 /*  are permitted provided that the following conditions are met:                     */
    00011 /*                                                                                    */
    00012 /*  - Redistributions of source code must retain the above copyright notice, this     */
    00013 /*  list of conditions and the following disclaimer.                                  */
    00014 /*                                                                                    */
    00015 /*  - Redistributions in binary form must reproduce the above copyright notice, this  */
    00016 /*  list of conditions and the following disclaimer in the documentation and/or       */
    00017 /*  other materials provided with the distribution.                                   */
    00018 /*                                                                                    */
    00019 /*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND   */
    00020 /*  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED     */
    00021 /*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE            */
    00022 /*  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR  */
    00023 /*  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    */
    00024 /*  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;      */
    00025 /*  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON    */
    00026 /*  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT           */
    00027 /*  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS     */
    00028 /*  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                      */
    00029 /*                                                                                    */
    00030 /**************************************************************************************/
    00031
    00032 #ifndef DrawCommand_INCLUDE_ONCE
    00033 #define DrawCommand_INCLUDE_ONCE
    00034
    00035 #include <vlCore/Array.hpp>
    00036 #include <vlGraphics/TriangleIterator.hpp>
    00037 #include <vlGraphics/IndexIterator.hpp>
    00038 #include <vlGraphics/PatchParameter.hpp>
    00039
    00040 namespace vl
    00041 {
    00042   //------------------------------------------------------------------------------
    00043   // DrawCall
    00044   //------------------------------------------------------------------------------
    00049   class DrawCall: public Object
    00050   {
    00051   public:
    00052     virtual const char* className() { return "vl::DrawCall"; }
    00053
    00054     DrawCall(): mType(PT_TRIANGLES), mEnabled(true) {}
    00055
    00056     DrawCall& operator=(const DrawCall& other)
    00057     {
    00058       mType      = other.mType;
    00059       mEnabled   = other.mEnabled;
    00060       return *this;
    00061     }
    00062
    00063     void setPrimitiveType(EPrimitiveType type) { mType = type; }
    00064     EPrimitiveType primitiveType() const { return mType; }
    00065
    00066     virtual void render(bool use_vbo = true) const = 0;
    00067     virtual ref<DrawCall> clone() const = 0;
    00068
    00069     virtual void deleteVBOs() = 0;
    00070     virtual void updateVBOs(bool discard_local_data=false, bool force_update=false) = 0;
    00071     virtual unsigned int handle() const = 0;
    00072
    00073     void setEnabled(bool enable) { mEnabled = enable; }
    00074     bool isEnabled() const { return mEnabled; }
    00075
    00079     virtual TriangleIterator triangleIterator() const = 0;
    00080
    00083     virtual IndexIterator indexIterator() const = 0;
    00084
    00086     int countIndices() const
    00087     {
    00088       int count = 0;
    00089       for( IndexIterator it = indexIterator(); !it.isEnd(); it.next() )
    00090         count++;
    00091       return count;
    00092     }
    00093
    00095     virtual int instances() const { return 1; }
    00096
    00098     void setPatchParameter(PatchParameter* patch_param) { mPatchParameter = patch_param; }
    00099
    00101     PatchParameter* patchParameter() { return mPatchParameter.get(); }
    00102
    00104     const PatchParameter* patchParameter() const { return mPatchParameter.get(); }
    00105
    00106   protected:
    00107     void applyPatchParameters() const
    00108     {
    00109       if (mType == PT_PATCHES && mPatchParameter)
    00110         mPatchParameter->apply();
    00111
    00112       if (mPatchParameter && mType != PT_PATCHES)
    00113       {
    00114         vl::Log::warning("PatchParameter used with non PT_PATCHES draw call!\n");
    00115       }
    00116
    00117       if (!mPatchParameter && mType == PT_PATCHES)
    00118       {
    00119         vl::Log::warning("No PatchParameter supplied while using PT_PATCHES draw call!\n");
    00120       }
    00121     }
    00122
    00123   protected:
    00124       ref<PatchParameter> mPatchParameter;
    00125       EPrimitiveType mType;
    00126       bool mEnabled;
    00127   };
    00128 }
    00129
    00130 #endif

Visualization Library v2011.05.1142 Reference Documentation
Copyright 2005-2011 Michele Bosi. All rights reserved.
Updated on Thu May 26 2011 22:51:23.
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