More readme and examples.

README.md

@@ -23,6 +23,70 @@ Features:
 
 ## Examples
 
+### Square
+[examples/square.nim](examples/square.nim)
+```nim
+var p: Path
+p.rect(50, 50, 100, 100)
+
+image.fillPath(p, rgba(255, 0, 0, 255))
+```
+![example output](examples/square.png)
+
+### Rounded rectangle
+[examples/rounded_rectangle.nim](examples/rounded_rectangle.nim)
+```nim
+let
+  x = 50.0
+  y = 50.0
+  w = 100.0
+  h = 100.0
+  r = 25.0
+
+var path: Path
+path.roundedRect(vec2(x, y), vec2(w, h), r, r, r, r)
+
+image.fillPath(path, rgba(0, 255, 0, 255))
+```
+![example output](examples/rounded_rectangle.png)
+
+### Heart
+[examples/heart.nim](examples/heart.nim)
+```nim
+image.fillPath(
+  """
+    M 20 60
+    A 40 40 90 0 1 100 60
+    A 40 40 90 0 1 180 60
+    Q 180 120 100 180
+    Q 20 120 20 60
+    z
+  """,
+  parseHtmlColor("#FC427B").rgba
+)
+```
+![example output](examples/heart.png)
+
+### Shadow
+[examples/shadow.nim](examples/shadow.nim)
+```nim
+var p: Path
+p.polygon(100, 100, 70, sides=8)
+p.closePath()
+
+var polyImage = newImage(200, 200)
+polyImage.fillPath(p, rgba(255, 255, 255, 255))
+
+image.draw(polyImage.shadow(
+  offset = vec2(2, 2),
+  spread = 2,
+  blur = 10,
+  color = rgba(0, 0, 0, 200)
+))
+image.draw(polyImage)
+```
+![example output](examples/shadow.png)
+
 ### Blur
 [examples/blur.nim](examples/blur.nim)
 ```nim
@@ -41,33 +105,6 @@ image.draw(blur)
 ```
 ![example output](examples/blur.png)
 
-### Rounded rectangle
-[examples/rounded_rectangle.nim](examples/rounded_rectangle.nim)
-```nim
-let
-  x = 50.0
-  y = 50.0
-  w = 100.0
-  h = 100.0
-  r = 25.0
-
-var path: Path
-path.roundedRect(vec2(x, y), vec2(w, h), r, r, r, r)
-
-image.fillPath(path, rgba(255, 0, 0, 255))
-```
-![example output](examples/rounded_rectangle.png)
-
-### Square
-[examples/square.nim](examples/square.nim)
-```nim
-var p: Path
-p.rect(50, 50, 100, 100)
-
-image.fillPath(p, rgba(255, 0, 0, 255))
-```
-![example output](examples/square.png)
-
 ### Tiger
 [examples/tiger.nim](examples/tiger.nim)
 ```nim

examples/heart.nim

@@ -0,0 +1,20 @@
+import pixie, chroma, vmath
+
+let
+  image = newImage(200, 200)
+
+image.fill(rgba(255, 255, 255, 255))
+
+image.fillPath(
+  """
+    M 20 60
+    A 40 40 90 0 1 100 60
+    A 40 40 90 0 1 180 60
+    Q 180 120 100 180
+    Q 20 120 20 60
+    z
+  """,
+  parseHtmlColor("#FC427B").rgba
+)
+
+image.writeFile("examples/heart.png")

examples/rounded_rectangle.nim

@@ -13,6 +13,6 @@ let
 var path: Path
 path.roundedRect(vec2(x, y), vec2(w, h), r, r, r, r)
 
-image.fillPath(path, rgba(255, 0, 0, 255))
+image.fillPath(path, rgba(0, 255, 0, 255))
 
 image.writeFile("examples/rounded_rectangle.png")

examples/shadow.nim

@@ -0,0 +1,24 @@
+import pixie, chroma, vmath
+
+let
+  trees = readImage("examples/data/trees.png")
+  image = newImage(200, 200)
+
+image.fill(rgba(255, 255, 255, 255))
+
+var p: Path
+p.polygon(100, 100, 70, sides=8)
+p.closePath()
+
+var polyImage = newImage(200, 200)
+polyImage.fillPath(p, rgba(255, 255, 255, 255))
+
+image.draw(polyImage.shadow(
+  offset = vec2(2, 2),
+  spread = 2,
+  blur = 10,
+  color = rgba(0, 0, 0, 200)
+))
+image.draw(polyImage)
+
+image.writeFile("examples/shadow.png")

tools/gen_readme.nim

@@ -1,4 +1,4 @@
-import os, strutils, osproc
+import os, strutils, osproc, sequtils, algorithm
 
 proc cutBetween(str, a, b: string): string =
   let
@@ -10,20 +10,28 @@ proc cutBetween(str, a, b: string): string =
 
 var md: seq[string]
 
-for k, path in walkDir("examples"):
+var exampleFiles = [
-  if path.endsWith(".nim"):
+  "examples/square.nim",
-    discard execCmd("nim c -r -d:danger " & path)
+  "examples/rounded_rectangle.nim",
-    let code = readFile(path)
+  "examples/heart.nim",
-    let innerCode = code.cutBetween("image.fill(rgba(255, 255, 255, 255))", "image.writeFile")
+  "examples/shadow.nim",
-    if innerCode != "":
+  "examples/blur.nim",
-      let path = path.replace("\\", "/")
+  "examples/tiger.nim"
-      md.add "### " & path.splitFile().name.replace("_", " ").capitalizeAscii()
+]
-      md.add "[" & path & "](" & path & ")"
+
-      md.add "```nim"
+for path in exampleFiles:
-      md.add innerCode.strip()
+  discard execCmd("nim c -r -d:danger " & path)
-      md.add "```"
+  let code = readFile(path)
-      md.add "![example output](" & path.replace(".nim", ".png").replace("\\", "/") & ")"
+  let innerCode = code.cutBetween("image.fill(rgba(255, 255, 255, 255))", "image.writeFile")
-      md.add ""
+  if innerCode != "":
+    let path = path.replace("\\", "/")
+    md.add "### " & path.splitFile().name.replace("_", " ").capitalizeAscii()
+    md.add "[" & path & "](" & path & ")"
+    md.add "```nim"
+    md.add innerCode.strip()
+    md.add "```"
+    md.add "![example output](" & path.replace(".nim", ".png").replace("\\", "/") & ")"
+    md.add ""
 
 var readme = readFile("README.md")