From 662c79e0fbd761f01f52e6cfde1ffec81ab57fba Mon Sep 17 00:00:00 2001
From: Ryan Oldenburg <guzba8@gmail.com>
Date: Mon, 8 Feb 2021 16:43:22 -0600
Subject: [PATCH] draw mask

---
 src/pixie/images.nim  | 14 +++++++++++---
 tests/test_images.nim |  2 +-
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/pixie/images.nim b/src/pixie/images.nim
index 2524046..191d12d 100644
--- a/src/pixie/images.nim
+++ b/src/pixie/images.nim
@@ -263,7 +263,13 @@ proc toStraightAlpha*(image: Image) =
     c.g = ((c.g.uint32 * multiplier) div 255).uint8
     c.b = ((c.b.uint32 * multiplier) div 255).uint8
 
-proc maskCorrect*(image: Image, mask: Mask, mat = mat3()) =
+proc drawCorrect*(image: Image, mask: Mask, mat = mat3(), blendMode = bmMask) =
+  if blendMode notin {bmMask}:
+    raise newException(
+      PixieError,
+      "Blend mode " & $blendMode & " not supported for masks"
+    )
+
   var
     matInv = mat.inverse()
     mask = mask
@@ -294,8 +300,10 @@ proc maskCorrect*(image: Image, mask: Mask, mat = mat3()) =
         )
       image.setRgbaUnsafe(x, y, blended)
 
-proc mask*(image: Image, mask: Mask, pos = vec2(0, 0)) {.inline.} =
-  image.maskCorrect(mask, translate(pos))
+proc draw*(
+  image: Image, mask: Mask, pos = vec2(0, 0), blendMode = bmMask
+) {.inline.} =
+  image.drawCorrect(mask, translate(pos), blendMode)
 
 when defined(release):
   {.pop.}
diff --git a/tests/test_images.nim b/tests/test_images.nim
index 829f6dd..6f02f09 100644
--- a/tests/test_images.nim
+++ b/tests/test_images.nim
@@ -102,6 +102,6 @@ block:
   let mask = newMask(image.width, image.height)
   mask.fillPath(path)
 
-  image.mask(mask)
+  image.draw(mask)
   image.toStraightAlpha()
   image.writeFile("tests/images/circleMask.png")