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[mtl canvas] make diagonal checks inclusive in mtl_side_of_segment()

This commit is contained in:
Martin Fouilleul 2023-04-05 10:19:25 +02:00
parent 53946a5710
commit e999af6bd3
2 changed files with 6 additions and 6 deletions
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8
examples/polygon/main.c
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@ -132,10 +132,10 @@ int main()
mg_set_cap(MG_CAP_NONE); mg_set_cap(MG_CAP_NONE);
mg_move_to(200, 200); mg_move_to(x+200, y+200);
mg_line_to(300, 300); mg_line_to(x+300, y+300);
mg_line_to(200, 400); mg_line_to(x+200, y+400);
mg_line_to(100, 300); mg_line_to(x+100, y+300);
mg_close_path(); mg_close_path();
mg_set_color_rgba(1, 0, 0, 1); mg_set_color_rgba(1, 0, 0, 1);
// mg_set_width(2); // mg_set_width(2);

4
src/mtl_renderer.metal
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@ -229,8 +229,8 @@ int mtl_side_of_segment(float2 p, const device mg_mtl_segment* seg, mtl_log_cont
float dx = p.x - seg->box.x; float dx = p.x - seg->box.x;
float dy = p.y - seg->box.y; float dy = p.y - seg->box.y;
if( (seg->config == MG_MTL_BR && dy > alpha*dx) if( (seg->config == MG_MTL_BR && dy >= alpha*dx)
||(seg->config == MG_MTL_TR && dy < ofs - alpha*dx)) ||(seg->config == MG_MTL_TR && dy <= ofs - alpha*dx))
{ {
side = -1; side = -1;
} }