draw, editor: visualize bounding boxes

1 files changed, 30 insertions, 0 deletions

diff --git a/draw/quad.cpp b/draw/quad.cpp
new file mode 100644
index 00000000..d7be52f2
--- /dev/null
+++ b/draw/quad.cpp
@@ -0,0 +1,30 @@
+#include "quad.hpp"
+#include "wireframe.hpp"
+#include <Magnum/GL/Renderer.h>
+
+namespace floormat::wireframe {
+
+quad::quad(Vector3 center, Vector2 size, float line_width) :
+    center{center}, size{size}, line_width{line_width}
+{}
+
+quad::vertex_array quad::make_vertex_array() const
+{
+    const auto Sx = size[0]*.5f, Sy = size[1]*.5f;
+    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 = center[2] + 0;
+    return {{
+        { Cx_0, Cy_0, Cz },
+        { Cx_1, Cy_0, Cz },
+        { Cx_1, Cy_1, Cz },
+        { Cx_0, Cy_1, Cz },
+    }};
+}
+
+void quad::on_draw() const
+{
+    mesh_base::set_line_width(line_width);
+}
+
+} // namespace floormat::wireframe