void RasterizeModelGeometry(RasterData* raster, const Module& model, const Matrix44f& objectTM, uint geomIdx)
{
const Module::Geometry& geometry = model.GetGeometry(geomIdx);
const uint lastPolygon = geometry.firstPolygon + geometry.numPolygons;
for (uint polyIdx = geometry.firstPolygon; polyIdx != lastPolygon; ++polyIdx)
{
const uint numVertices = model.GetPolygonNumVertices(polyIdx);
Trianglef triangle;
triangle.v0 = model.GetVertex(model.GetPolygonVertexIndex(polyIdx, 0));
triangle.v1 = model.GetVertex(model.GetPolygonVertexIndex(polyIdx, 1));
for (uint vertIdx = 2; vertIdx < numVertices; ++vertIdx)
{
triangle.v2 = model.GetVertex(model.GetPolygonVertexIndex(polyIdx, vertIdx));
Trianglef transTriangle = triangle;
transTriangle.v0 = Mul(triangle.v0, objectTM);
transTriangle.v1 = Mul(triangle.v1, objectTM);
transTriangle.v2 = Mul(triangle.v2, objectTM);
RasterizeTriangle(raster, transTriangle);
triangle.v1 = triangle.v2;
}
}
}
void DrawModelGeometry(const Module& model, uint geomIdx)
{
const Module::Geometry& geometry = model.GetGeometry(geomIdx);
glBegin(GL_LINES);
const uint lastPolygon = geometry.firstPolygon + geometry.numPolygons;
for (uint polyIdx = geometry.firstPolygon; polyIdx != lastPolygon; ++polyIdx)
{
const uint numVertices = model.GetPolygonNumVertices(polyIdx);
const Vector3f first = model.GetVertex(model.GetPolygonVertexIndex(polyIdx, 0));
Vector3f last = first;
for (uint vertIdx = 1; vertIdx < numVertices; ++vertIdx)
{
const Vector3f cur = model.GetVertex(model.GetPolygonVertexIndex(polyIdx, vertIdx));
glVertex3fv(&last.x);
glVertex3fv(&cur.x);
last = cur;
}
glVertex3fv(&last.x);
glVertex3fv(&first.x);
}
glEnd();
}
