56 lines
1.0 KiB
C
56 lines
1.0 KiB
C
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#ifndef MESH_BUILDER_H
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#define MESH_BUILDER_H
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#include "../../util/utility.h"
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#include <core/map.h>
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#include <scene/resources/mesh.h>
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#include <vector>
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namespace dmc {
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// Faster than SurfaceTool, only does what is needed to build a smooth mesh
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class MeshBuilder {
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public:
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MeshBuilder() :
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_reused_vertices(0) {}
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inline void add_vertex(Vector3 position, Vector3 normal) {
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int i = 0;
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Map<Vector3, int>::Element *e = _position_to_index.find(position);
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if (e) {
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i = e->get();
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++_reused_vertices;
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} else {
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i = _positions.size();
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_position_to_index.insert(position, i);
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_positions.push_back(position);
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_normals.push_back(normal);
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}
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_indices.push_back(i);
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}
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Array commit(bool wireframe);
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void clear();
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int get_reused_vertex_count() const { return _reused_vertices; }
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private:
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std::vector<Vector3> _positions;
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std::vector<Vector3> _normals;
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std::vector<int> _indices;
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Map<Vector3, int> _position_to_index;
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int _reused_vertices;
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};
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} // namespace dmc
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#endif // MESH_BUILDER_H
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