Add canvas::drawTrig (#208)

Signed-off-by: Marek Maškarinec <[email protected]>

samples/canvas/main.um

@@ -9,5 +9,6 @@ fn init*() {
 	window::onFrame.register({
 		canvas::drawRectLines(0x000000FF, {30, 30, 100, 100}, 3)
 		canvas::drawRectLines(0xFF000066, {80, 80, 100, 110}, 5)
+		canvas::drawTrig(0x00FF0066, { 30, 200 }, { 120, 200 }, { 30, 300 })
 	})
 }

src/bindings.c

@@ -1254,6 +1254,18 @@ umth_canvas_draw_quad(UmkaStackSlot *p, UmkaStackSlot *r)
 	th_canvas_quad(q, color);
 }
 
+// fn umth_canvas_draw_trig(color: uint32, a, b, c: th::Vf2)
+void
+umth_canvas_draw_trig(UmkaStackSlot *p, UmkaStackSlot *r)
+{
+	uint32_t color = umkaGetParam(p, 0)->uintVal;
+	th_vf2 a = *(th_vf2 *)umkaGetParam(p, 1);
+	th_vf2 b = *(th_vf2 *)umkaGetParam(p, 2);
+	th_vf2 c = *(th_vf2 *)umkaGetParam(p, 3);
+
+	th_canvas_triangle(color, a, b, c);
+}
+
 // fn umth_canvas_begin_scissor_rect(r: rect::Rect)
 void
 umth_canvas_begin_scissor_rect(UmkaStackSlot *p, UmkaStackSlot *r)
@@ -1593,6 +1605,7 @@ _th_umka_bind(void *umka)
 	umkaAddFunc(umka, "umth_canvas_draw_line", &umth_canvas_draw_line);
 	umkaAddFunc(umka, "umth_canvas_draw_rect_lines", &umth_canvas_draw_rect_lines);
 	umkaAddFunc(umka, "umth_canvas_draw_quad", &umth_canvas_draw_quad);
+	umkaAddFunc(umka, "umth_canvas_draw_trig", &umth_canvas_draw_trig);
 	umkaAddFunc(umka, "umth_canvas_begin_scissor_rect", &umth_canvas_begin_scissor_rect);
 	umkaAddFunc(umka, "umth_canvas_end_scissor", &umth_canvas_end_scissor);
 

src/staembed.c

@@ -1312,6 +1312,14 @@ const char *th_em_modulesrc[] = {
 "\tumth_canvas_draw_quad(color, q)\n"
 "}\n"
 "\n"
+"fn umth_canvas_draw_trig(color: uint32, a, b, c: th::Vf2)\n"
+"//~~fn drawTrig\n"
+"// Draws a triangle.\n"
+"fn drawTrig*(color: uint32, a, b, c: th::Vf2) {\n"
+"//~~\n"
+"\tumth_canvas_draw_trig(color, a, b, c)\n"
+"}\n"
+"\n"
 "var scissor: []rect::Rect\n"
 "\n"
 "fn umth_canvas_begin_scissor_rect(r: rect::Rect)\n"
@@ -5073,6 +5081,14 @@ const char *th_em_moduledocs[] = {
 "\n"
 "---------\n"
 "\n"
+"fn drawTrig\n"
+"\n"
+"fn drawTrig*(color: uint32, a, b, c: th::Vf2) {\n"
+"\n"
+"Draws a triangle.\n"
+"\n"
+"---------\n"
+"\n"
 "fn beginScissorRect\n"
 "\n"
 "fn beginScissorRect*(r: rect::Rect, debug: bool = false) {\n"

umka/canvas.um

@@ -98,6 +98,14 @@ fn drawQuad*(color: uint32, q: th::Quad) {
 	umth_canvas_draw_quad(color, q)
 }
 
+fn umth_canvas_draw_trig(color: uint32, a, b, c: th::Vf2)
+//~~fn drawTrig
+// Draws a triangle.
+fn drawTrig*(color: uint32, a, b, c: th::Vf2) {
+//~~
+	umth_canvas_draw_trig(color, a, b, c)
+}
+
 var scissor: []rect::Rect
 
 fn umth_canvas_begin_scissor_rect(r: rect::Rect)