65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
// Copyright (C) 2002-2011 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CTriangleBBSelector.h"
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#include "ISceneNode.h"
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namespace irr
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{
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namespace scene
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{
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//! constructor
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CTriangleBBSelector::CTriangleBBSelector(ISceneNode* node)
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: CTriangleSelector(node)
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{
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#ifdef _DEBUG
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setDebugName("CTriangleBBSelector");
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#endif
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Triangles.set_used(12); // a box has 12 triangles.
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}
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//! Gets all triangles.
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void CTriangleBBSelector::getTriangles(core::triangle3df* triangles,
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s32 arraySize, s32& outTriangleCount,
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const core::matrix4* transform) const
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{
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if (!SceneNode)
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return;
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// construct triangles
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const core::aabbox3d<f32>& box = SceneNode->getBoundingBox();
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core::vector3df edges[8];
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box.getEdges(edges);
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Triangles[0].set( edges[3], edges[0], edges[2]);
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Triangles[1].set( edges[3], edges[1], edges[0]);
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Triangles[2].set( edges[3], edges[2], edges[7]);
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Triangles[3].set( edges[7], edges[2], edges[6]);
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Triangles[4].set( edges[7], edges[6], edges[4]);
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Triangles[5].set( edges[5], edges[7], edges[4]);
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Triangles[6].set( edges[5], edges[4], edges[0]);
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Triangles[7].set( edges[5], edges[0], edges[1]);
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Triangles[8].set( edges[1], edges[3], edges[7]);
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Triangles[9].set( edges[1], edges[7], edges[5]);
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Triangles[10].set(edges[0], edges[6], edges[2]);
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Triangles[11].set(edges[0], edges[4], edges[6]);
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// call parent
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CTriangleSelector::getTriangles(triangles, arraySize, outTriangleCount, transform);
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}
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} // end namespace scene
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} // end namespace irr
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