From 6b843f94043174ea70901259ec0f85a2d8c5a9b5 Mon Sep 17 00:00:00 2001
From: Ryan Oldenburg <ryan@guzba.com>
Date: Tue, 7 Jun 2022 23:50:04 -0500
Subject: [PATCH] mask resize

---
 bindings/bindings.nim |  1 +
 src/pixie/images.nim  | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/bindings/bindings.nim b/bindings/bindings.nim
index 82dbc0e..83e0758 100644
--- a/bindings/bindings.nim
+++ b/bindings/bindings.nim
@@ -156,6 +156,7 @@ exportRefObject Mask:
     applyOpacity(Mask, float32)
     invert(Mask)
     blur(Mask, float32, uint8)
+    resize(Mask, int, int)
     draw(Mask, Mask, Mat3, BlendMode)
     draw(Mask, Image, Mat3, BlendMode)
     fillText(Mask, Font, string, Mat3, Vec2, HorizontalAlignment, VerticalAlignment)
diff --git a/src/pixie/images.nim b/src/pixie/images.nim
index 540bf46..a99c62d 100644
--- a/src/pixie/images.nim
+++ b/src/pixie/images.nim
@@ -1155,6 +1155,21 @@ proc resize*(srcImage: Image, width, height: int): Image {.raises: [PixieError].
       OverwriteBlend
     )
 
+proc resize*(srcMask: Mask, width, height: int): Mask {.raises: [PixieError].} =
+  ## Resize a mask to a given height and width.
+  if width == srcMask.width and height == srcMask.height:
+    result = srcMask.copy()
+  else:
+    result = newMask(width, height)
+    result.draw(
+      srcMask,
+      scale(vec2(
+        width.float32 / srcMask.width.float32,
+        height.float32 / srcMask.height.float32
+      )),
+      OverwriteBlend
+    )
+
 proc shadow*(
   image: Image, offset: Vec2, spread, blur: float32, color: SomeColor
 ): Image {.raises: [PixieError].} =