53 lines
1.5 KiB
C++
53 lines
1.5 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 + 4];
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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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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);
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public:
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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_out, float radius_in)
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{
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static GLushort idx[div*6 + div*4];
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static vertex_t vertices[div * 2];
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create_impl(radius_out, radius_in, 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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