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#include "box.hpp"
#include "wireframe.hpp"
#include <Magnum/GL/Renderer.h>
namespace floormat::wireframe {
box::box(Vector3 center, Vector3 size, float line_width) :
center{center}, size{size}, line_width{line_width}
{}
box::vertex_array box::make_vertex_array() const
{
const auto Sx = size[0]*.5f, Sy = size[1]*.5f, Sz = size[2];
const auto Cx_0 = center[0] - Sx, Cx_1 = center[0] + Sx;
const auto Cy_0 = center[1] - Sy, Cy_1 = center[1] + Sy;
const auto Cz_0 = center[2] + 0, Cz_1 = center[2] + Sz;
return {{
{Cx_0, Cy_0, Cz_0}, // (0) front left bottom
{Cx_1, Cy_0, Cz_0}, // (1) front right bottom
{Cx_0, Cy_1, Cz_0}, // (2) back left bottom
{Cx_1, Cy_1, Cz_0}, // (3) back right bottom
{Cx_0, Cy_0, Cz_1}, // (4) front left top
{Cx_1, Cy_0, Cz_1}, // (5) front right top
{Cx_0, Cy_1, Cz_1}, // (6) back left top
{Cx_1, Cy_1, Cz_1}, // (7) back right top
}};
}
void box::on_draw() const
{
mesh_base::set_line_width(line_width);
}
box::index_array box::make_index_array()
{
return {{
0, 1,
0, 2,
0, 4,
1, 3,
1, 5,
2, 3,
2, 6,
3, 7,
4, 5,
4, 6,
5, 7,
6, 7,
}};
}
} // namespace floormat::wireframe
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