91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
#pragma once
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class Shape
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{
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protected:
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GLuint buffers[2];
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GLuint arrays[2];
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GLuint count[2];
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GLvoid* ioff[2];
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struct vertex_t { glm::vec4 pos; glm::vec2 uvs; };
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public:
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bool create_buffers(GLvoid* idx, GLvoid* vertices, int isize, int vsize);
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void draw_fill() const;
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void draw_stroke() const;
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};
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class Plane : public Shape
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{
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void create_impl(float w, float h, int div, GLushort* idx, vertex_t* vertices);
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public:
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template<int div>
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bool create(float w, float h)
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{
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static GLushort idx[div * div * 6 + 8];
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static vertex_t vertices[(div+1)*(div+1)];
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create_impl(w, h, div, idx, vertices);
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return create_buffers(idx, vertices, sizeof(idx), sizeof(vertices));
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}
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};
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class Circle : public Shape
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{
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public:
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enum class kUVMapping: uint8_t { Planar, Tube };
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template<int div>
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bool create(float radius)
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{
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static GLushort idx[div*3 + div*2];
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static vertex_t vertices[div+1];
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create_impl(radius, div, idx, vertices);
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return create_buffers(idx, vertices, sizeof(idx), sizeof(vertices));
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}
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template<int div>
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bool create(float radius, kUVMapping map)
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{
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static GLushort idx[(div+1)*3 + (div+1)*4];
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static vertex_t vertices[(div+1)*2];
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create_impl(radius, 0.f, (div+1), idx, vertices, map);
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return create_buffers(idx, vertices, sizeof(idx), sizeof(vertices));
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}
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template<int div>
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bool create(float radius_out, float radius_in, kUVMapping map)
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{
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static GLushort idx[(div+1)*6 + (div+1)*4];
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static vertex_t vertices[(div+1) * 2];
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create_impl(radius_out, radius_in, (div+1), idx, vertices, map);
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return create_buffers(idx, vertices, sizeof(idx), sizeof(vertices));
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}
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private:
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void create_impl(float radius, int div, GLushort* idx, vertex_t* vertices);
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void create_impl(float radius_out, float radius_in, int div, GLushort* idx, vertex_t* vertices, kUVMapping map);
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};
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class Rounded : public Shape
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{
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void create_impl(float w, float h, float r, int div, GLushort* idx, GLushort* idx_tmp, vertex_t* vertices);
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public:
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template<int div>
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bool create(float w, float h, float r)
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{
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static GLushort idx[(10 + div * 4) * 3 + (4 + div * 4) * 2];
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static GLushort idx_tmp[div+1];
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static vertex_t vertices[12 + (div-1) * 4];
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create_impl(w, h, r, div, idx, idx_tmp, vertices);
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return create_buffers(idx, vertices, sizeof(idx), sizeof(vertices));
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}
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};
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class Slice9 : public Shape
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{
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void create_impl(float w, float h, float r, float tr, GLushort* idx, vertex_t* vertices);
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public:
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bool create(float w, float h, float r, float tr)
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{
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static GLushort idx[3 * 3 * 6 + 4 * 2];
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static vertex_t vertices[4 * 4];
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create_impl(w, h, r, tr, idx, vertices);
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return create_buffers(idx, vertices, sizeof(idx), sizeof(vertices));
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}
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};
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