[5] | 1 | /* |
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| 2 | ----------------------------------------------------------------------------- |
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| 3 | This source file is part of OGRE |
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| 4 | (Object-oriented Graphics Rendering Engine) |
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| 5 | For the latest info, see http://www.ogre3d.org/ |
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| 6 | |
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| 7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
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| 8 | Also see acknowledgements in Readme.html |
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| 9 | |
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| 10 | This program is free software; you can redistribute it and/or modify it under |
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software |
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| 12 | Foundation; either version 2 of the License, or (at your option) any later |
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| 13 | version. |
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| 14 | |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT |
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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| 18 | |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with |
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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| 22 | http://www.gnu.org/copyleft/lesser.txt. |
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| 23 | |
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| 24 | You may alternatively use this source under the terms of a specific version of |
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| 25 | the OGRE Unrestricted License provided you have obtained such a license from |
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| 26 | Torus Knot Software Ltd. |
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| 27 | ----------------------------------------------------------------------------- |
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| 28 | */ |
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| 29 | #include "OgreStableHeaders.h" |
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| 30 | #include "OgrePatchMesh.h" |
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| 31 | #include "OgreSubMesh.h" |
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| 32 | #include "OgreHardwareBufferManager.h" |
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| 33 | |
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| 34 | namespace Ogre { |
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| 35 | |
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| 36 | //----------------------------------------------------------------------- |
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| 37 | PatchMesh::PatchMesh(ResourceManager* creator, const String& name, ResourceHandle handle, |
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| 38 | const String& group) |
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| 39 | : Mesh(creator, name, handle, group, false, 0) |
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| 40 | { |
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| 41 | } |
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| 42 | //----------------------------------------------------------------------- |
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| 43 | void PatchMesh::define(void* controlPointBuffer, |
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| 44 | VertexDeclaration *declaration, size_t width, size_t height, |
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| 45 | size_t uMaxSubdivisionLevel, size_t vMaxSubdivisionLevel, |
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| 46 | PatchSurface::VisibleSide visibleSide, HardwareBuffer::Usage vbUsage, |
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| 47 | HardwareBuffer::Usage ibUsage, |
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| 48 | bool vbUseShadow, bool ibUseShadow) |
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| 49 | { |
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| 50 | mVertexBufferUsage = vbUsage; |
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| 51 | mVertexBufferShadowBuffer = vbUseShadow; |
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| 52 | mIndexBufferUsage = ibUsage; |
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| 53 | mIndexBufferShadowBuffer = ibUseShadow; |
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| 54 | |
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| 55 | // Init patch builder |
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| 56 | // define the surface |
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| 57 | // NB clone the declaration to make it independent |
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| 58 | mDeclaration = declaration->clone(); |
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| 59 | mSurface.defineSurface(controlPointBuffer, mDeclaration, width, height, |
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| 60 | PatchSurface::PST_BEZIER, uMaxSubdivisionLevel, vMaxSubdivisionLevel, |
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| 61 | visibleSide); |
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| 62 | |
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| 63 | } |
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| 64 | //----------------------------------------------------------------------- |
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| 65 | void PatchMesh::setSubdivision(Real factor) |
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| 66 | { |
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| 67 | mSurface.setSubdivisionFactor(factor); |
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| 68 | SubMesh* sm = this->getSubMesh(0); |
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| 69 | sm->indexData->indexCount = mSurface.getCurrentIndexCount(); |
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| 70 | |
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| 71 | } |
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| 72 | //----------------------------------------------------------------------- |
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| 73 | void PatchMesh::loadImpl(void) |
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| 74 | { |
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| 75 | SubMesh* sm = this->createSubMesh(); |
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| 76 | sm->vertexData = new VertexData(); |
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| 77 | sm->useSharedVertices = false; |
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| 78 | |
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| 79 | // Set up vertex buffer |
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| 80 | sm->vertexData->vertexStart = 0; |
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| 81 | sm->vertexData->vertexCount = mSurface.getRequiredVertexCount(); |
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| 82 | sm->vertexData->vertexDeclaration = mDeclaration; |
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| 83 | HardwareVertexBufferSharedPtr vbuf = HardwareBufferManager::getSingleton(). |
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| 84 | createVertexBuffer( |
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| 85 | mDeclaration->getVertexSize(0), |
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| 86 | sm->vertexData->vertexCount, |
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| 87 | mVertexBufferUsage, |
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| 88 | mVertexBufferShadowBuffer); |
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| 89 | sm->vertexData->vertexBufferBinding->setBinding(0, vbuf); |
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| 90 | |
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| 91 | // Set up index buffer |
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| 92 | sm->indexData->indexStart = 0; |
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| 93 | sm->indexData->indexCount = mSurface.getRequiredIndexCount(); |
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| 94 | sm->indexData->indexBuffer = HardwareBufferManager::getSingleton(). |
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| 95 | createIndexBuffer( |
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| 96 | HardwareIndexBuffer::IT_16BIT, // only 16-bit indexes supported, patches shouldn't be bigger than that |
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| 97 | sm->indexData->indexCount, |
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| 98 | mIndexBufferUsage, |
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| 99 | mIndexBufferShadowBuffer); |
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| 100 | |
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| 101 | // Build patch |
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| 102 | mSurface.build(vbuf, 0, sm->indexData->indexBuffer, 0); |
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| 103 | |
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| 104 | // Set bounds |
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| 105 | this->_setBounds(mSurface.getBounds(), true); |
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| 106 | this->_setBoundingSphereRadius(mSurface.getBoundingSphereRadius()); |
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| 107 | |
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| 108 | } |
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| 109 | |
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| 110 | } |
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| 111 | |
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