1 files changed, 29 insertions, 0 deletions
diff --git a/layer_box.cpp b/layer_box.cpp
new file mode 100644
index 0000000..d229833
--- /dev/null
+++ b/layer_box.cpp
@@ -0,0 +1,29 @@
+#include <math.h>
+
+#include <SDL.h>
+#include <SDL_gfxPrimitives.h>
+
+#include "osc_graphics.h"
+#include "layer_box.h"
+
+void
+LayerBox::geo(SDL_Rect geo)
+{
+	x1 = geo.x;
+	y1 = geo.y;
+	x2 = geo.x + geo.w;
+	y2 = geo.y + geo.h;
+}
+
+void
+LayerBox::alpha(float opacity)
+{
+	a = (Uint8)ceilf(opacity*SDL_ALPHA_OPAQUE);
+}
+
+void
+LayerBox::frame(SDL_Surface *target)
+{
+	boxRGBA(target, x1, y1, x2 ? : target->w, y2 ? : target->h,
+		r, g, b, a);
+}