115 lines
2.7 KiB
C++
115 lines
2.7 KiB
C++
#include "CCollisionMesh.h"
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#include <Core/CRenderer.h>
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CCollisionMesh::CCollisionMesh()
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{
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mVBO.SetVertexDesc(ePosition);
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mVertexCount = 0;
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mLineCount = 0;
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mFaceCount = 0;
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mBuffered = false;
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mIBO.SetPrimitiveType(GL_TRIANGLES);
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}
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CCollisionMesh::~CCollisionMesh()
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{
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if (mBuffered)
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{
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mIBO.Clear();
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mVBO.Clear();
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mBuffered = false;
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}
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}
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void CCollisionMesh::BufferGL()
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{
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if (mBuffered)
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{
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mIBO.Clear();
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mVBO.Clear();
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mBuffered = false;
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}
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// Add all the verts to our VBO, first...
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mVBO.Reserve(mCollisionVertices.size());
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for (u16 v = 0; v < mCollisionVertices.size(); v++)
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mVBO.AddVertex(CVertex(mCollisionVertices[v].Pos));
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// Then add all the relevant indices to the IBO
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mIBO.Reserve(mCollisionFaces.size() * 3);
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for (u32 v = 0; v < mCollisionFaces.size(); v++)
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{
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u16 Verts[3];
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CCollisionFace *Face = &mCollisionFaces[v];
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CCollisionLine *LineA = GetLine(Face->Lines[0]);
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CCollisionLine *LineB = GetLine(Face->Lines[1]);
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Verts[0] = LineA->Vertices[0];
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Verts[1] = LineA->Vertices[1];
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// We have two vertex indices; the last one is one of the ones on line B, but we're not sure which one
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if ((LineB->Vertices[0] != Verts[0]) &&
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(LineB->Vertices[0] != Verts[1]))
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Verts[2] = LineB->Vertices[0];
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else
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Verts[2] = LineB->Vertices[1];
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// Some faces have a property that indicates they need to be inverted
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if (!Face->Properties.Invert)
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mIBO.AddIndices(&Verts[0], 3);
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else {
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mIBO.AddIndex(Verts[2]);
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mIBO.AddIndex(Verts[1]);
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mIBO.AddIndex(Verts[0]);
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}
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}
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// Buffer, and done
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mVBO.Buffer();
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mIBO.Buffer();
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mBuffered = true;
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}
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void CCollisionMesh::Draw()
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{
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if (!mBuffered) BufferGL();
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mVBO.Bind();
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mIBO.Bind();
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glDrawElements(GL_TRIANGLES, mIBO.GetSize(), GL_UNSIGNED_SHORT, (void*) 0);
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gDrawCount++;
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mIBO.Unbind();
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mVBO.Unbind();
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}
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void CCollisionMesh::DrawWireframe()
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{
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if (!mBuffered) BufferGL();
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mVBO.Bind();
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mIBO.Bind();
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for (u32 f = 0; f < mFaceCount; f++)
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{
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glDrawElements(GL_LINE_LOOP, 3, GL_UNSIGNED_SHORT, (void*) (f * 6));
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gDrawCount++;
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}
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mIBO.Unbind();
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mVBO.Unbind();
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}
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CCollisionMesh::CCollisionVertex* CCollisionMesh::GetVertex(u16 index)
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{
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return &mCollisionVertices[index];
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}
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CCollisionMesh::CCollisionLine* CCollisionMesh::GetLine(u16 index)
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{
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return &mCollisionLines[index];
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}
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CCollisionMesh::CCollisionFace* CCollisionMesh::GetFace(u16 index)
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{
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return &mCollisionFaces[index];
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}
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