gg: fix overlapping slices in draw_slice_filled() (#20182)

vlang · Dec 15, 2023 · 6d0d82d · 6d0d82d
1 parent 6e47782
commit 6d0d82d
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Showing 2 changed files with 6 additions and 7 deletions.
diff --git a/examples/gg/arcs_and_slices.v b/examples/gg/arcs_and_slices.v
@@ -7,7 +7,10 @@ import math
 const win_width = 700
 const win_height = 800
 const bg_color = gx.white
-const colour = gx.black
+
+// A transparent color is used to aid in verifying that
+// rendering is precise on each of the the arc types (e.g. no overlapping or double rendered slices)
+const colour = gx.rgba(100, 100, 0, 100)
 
 enum Selection {
 	segs = 0
@@ -28,9 +31,7 @@ mut:
 }
 
 fn main() {
-	mut app := &App{
-		gg: 0
-	}
+	mut app := &App{}
 	app.gg = gg.new_context(
 		width: win_width
 		height: win_height

diff --git a/vlib/gg/draw.c.v b/vlib/gg/draw.c.v
@@ -727,9 +727,7 @@ pub fn (ctx &Context) draw_slice_filled(x f32, y f32, radius f32, start_angle f3
 		xx *= rad_factor
 		yy *= rad_factor
 		sgl.v2f(xx + nx, yy + ny)
-		if i & 1 == 0 {
-			sgl.v2f(nx, ny)
-		}
+		sgl.v2f(nx, ny)
 	}
 	sgl.end()
 }