105 lines
4.3 KiB
C
105 lines
4.3 KiB
C
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/****************************************************************************
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __BOX_BUILDER_H__
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#define __BOX_BUILDER_H__
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#include "meshbuilder/meshbuilder.h"
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#include "math/float3.h"
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namespace MeshBuilder
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{
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#define BOX_VERTEX_COUNT 8
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#define BOX_INDICES_COUNT 36
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// ======== <20><><EFBFBD><EFBFBD><EFBFBD>ֲ<EFBFBD> ================
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// ---- font ------ back ---------
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// ---- 0 - 1 ------ 4 - 5 --------
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// ---- | / | ------ | / | ---------
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// ---- 2 - 3 ------ 6 - 7 --------
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// ------------ չ<><D5B9> ---------------
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// ------------ 4 - 5 -------------
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// ------------ | / | --------------
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// -------- 4 - 0 - 1 - 5 - 4 -----
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// -------- | / | / | / | / | ------
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// -------- 6 - 2 - 3 - 7 - 6 -----
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// ------------ | / | --------------
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// ------------ 6 - 7 -------------
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// indices: font,back,top,bottom,left,right
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// indices: {0,2,1; 1,2,3} {5,7,4; 4,7,6} {4,0,5; 5,0,1} {2,6,3; 3,6,7} {4,6,0; 0,6,2} {1,3,5; 5,3,7}
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// postion :float3 , normal : float3
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class BoxBuilder
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{
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public:
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// the vertex count in a rect
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static SizeT VertexCount();
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// the index count in a rect
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static SizeT IndexCount();
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// buffer: vertex buffer, vertexSize: a vertex element's size, posBias: the starting location(in bytes) of position data in a vertex element
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// sideX: the side in x coord, sideY: the side in y coord, sideZ: the side in z coord, center: the center of the box
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template<typename T>
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static void SetPositions(T* buffer, SizeT vertexSize, SizeT posBias, float sideX, float sideY, float sideZ, const Math::float3& center);
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// buffer: vertex buffer, vertexSize: a vertex element's size, normalBias: the starting location(in bytes) of normal data in a vertex element
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// posBuffer: vertex buffer, posBufferVertexSize: a vertex element's size of posBuffer, posBias: the starting location(in bytes) of position data in a vertex element of posBuffer
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template<typename T1, typename T2>
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static void SetNormals(T1* buffer, SizeT vertexSize, SizeT normalBias, const T2* posBuffer, SizeT posBufferVertexSize, SizeT posBias);
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// set indices
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static void SetIndices(ushort* buffer);
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private:
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static void setPositions(ubyte* buffer, SizeT vertexSize, SizeT posBias, float sideX, float sideY, float sideZ, const Math::float3& center);
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static void setNormals(ubyte* buffer, SizeT vertexSize, SizeT normalBias, const ubyte* posBuffer, SizeT posBufferVertexSize, SizeT posBias);
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BoxBuilder(){}
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};
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inline SizeT BoxBuilder::VertexCount()
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{
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return BOX_VERTEX_COUNT;
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}
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inline SizeT BoxBuilder::IndexCount()
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{
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return BOX_INDICES_COUNT;
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}
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template<typename T>
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inline void BoxBuilder::SetPositions(T* buffer, SizeT vertexSize, SizeT posBias, float sideX, float sideY, float sideZ, const Math::float3& center)
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{
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setPositions(reinterpret_cast<ubyte*>(buffer), vertexSize, posBias, sideX, sideY, sideZ, center);
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}
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template<typename T1, typename T2>
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inline void BoxBuilder::SetNormals(T1* buffer, SizeT vertexSize, SizeT normalBias, const T2* posBuffer, SizeT posBufferVertexSize, SizeT posBias)
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{
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setNormals(reinterpret_cast<ubyte*>(buffer), vertexSize, normalBias, reinterpret_cast<const ubyte*>(posBuffer), posBufferVertexSize, posBias);
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}
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}
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#endif //__BOX_BUILDER_H__
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