32 lines
773 B
C++
32 lines
773 B
C++
#include "polygons.h"
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#include <iostream>
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polygon* polygons = nullptr;
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uint n_polygons = 1;
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void polygons_init_state() {
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polygons = new polygon[n_polygons];
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polygon poly =
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polygon{{400, 400}, 0, {{0, 0}, {0, 100}, {100, 100}, {100, 0}}};
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polygons[0] = poly;
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}
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void polygon::draw(cairo_t* cr) const {
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polygon& poly = polygons[0];
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vec2d& center = poly.center;
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cairo_set_source_rgb(cr, 1, 1, 1);
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cairo_move_to(cr, center.x, center.y);
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for (auto& point : poly.points)
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cairo_line_to(cr, center.x + point.x, center.y + point.y);
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cairo_line_to(cr, center.x, center.y);
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cairo_stroke(cr);
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}
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void polygons_draw(cairo_t* cr) {
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for (const polygon* p = polygons; p != polygons + n_polygons; ++p)
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p->draw(cr);
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}
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