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newton沖突－－－FOR IRRLICHT

//Function to create a NewtonCollision from irrlicht mesh

NewtonCollision *CreateCollisionFromMesh(NewtonWorld *nWorld, scene::IMesh *mesh)

{

//Get number of vertices

u32 nVertices = 0, nMeshBuffer;

for( nMeshBuffer = 0 ; nMeshBuffer < mesh->getMeshBufferCount(); ++nMeshBuffer)

{

scene::IMeshBuffer *buffer = mesh->getMeshBuffer(nMeshBuffer);

nVertices += buffer->getVertexCount();

}

// allocate block for positions of every vertex in mesh, no need to delete

// anything, the array cleans up for us.

core::array<core::vector3df> vertices;

vertices.reallocate(nVertices);

//Get mesh buffers and copy face vertices

for( nMeshBuffer = 0 ; nMeshBuffer < mesh->getMeshBufferCount(); ++nMeshBuffer)

{

scene::IMeshBuffer *buffer = mesh->getMeshBuffer(nMeshBuffer);

// handle the irrlicht supported vertex types

switch(buffer->getVertexType())

{

case video::EVT_STANDARD:

{

video::S3DVertex* verts = (video::S3DVertex*)buffer->getVertices();

for(u32 v = 0; v < buffer->getVertexCount(); ++v)

vertices.push_back(verts[v].Pos);

}

break;

case video::EVT_2TCOORDS:

{

video::S3DVertex2TCoords* verts = (video::S3DVertex2TCoords*)buffer->getVertices();

for(u32 v = 0; v < buffer->getVertexCount(); ++v)

vertices.push_back(verts[v].Pos);

}

break;

case video::EVT_TANGENTS:

{

video::S3DVertexTangents* verts = (video::S3DVertexTangents*)buffer->getVertices();

for(u32 v = 0; v < buffer->getVertexCount(); ++v)

vertices.push_back(verts[v].Pos);

}

break;

default:

return 0; // don't know vertex type! bail.

}

//Create Newton collision object

return NewtonCreateConvexHull(nWorld, nVertices, &vertices[0].X, sizeof(core::vector3df), NULL);

}

core::array<f32> vertices;

vertices.reallocate(nVertices * 3);

// each loop should be updated

for(u32 v = 0; v < buffer->getVertexCount(); ++v)

{

vertices.push_back(verts[v].Pos.X);

vertices.push_back(verts[v].Pos.Y);

vertices.push_back(verts[v].Pos.Z);

}

// this should be passed to the convex hull function

return NewtonCreateConvexHull(nWorld, nVertices, &vertices[0], sizeof(f32 * 3), NULL);

posted on 2008-05-04 12:20 bloodbao 閱讀(260) 評(píng)論(0) 編輯收藏引用所屬分類(lèi): c++

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