fix: spine mipmap (#36)

Co-authored-by: Mat Groves <[email protected]>

src/spine/spineAtlasMipmap.ts

@@ -74,6 +74,12 @@ function rescaleAtlas(raw: string, scale = 1, template = ''): string
  // Regex for xy values, like 'size: 2019,463', 'orig: 134, 240'
  const reXY = /(.*?:\s?)(\d+)(\s?,\s?)(\d+)$/;
 
+ // Regex for scale values, like 'scale: 0.75'
+ const regScale = /(scale:\s?)(\d+(\.\d+)?)$/;
+
+ // Regex for rect values, like 'bounds:2,270,804,737', 'offsets:0,0,110,113'
+ const regRect = /(.*?:\s?)(\d+)(\s?,\s?)(\d+)(\s?,\s?)(\d+)(\s?,\s?)(\d+)$/;
+
  // Regex for image names, like 'image.png', 'img.jpg'
  const reImg = /(.+)(.png|jpg|jpeg)$/;
 
@@ -82,6 +88,8 @@ function rescaleAtlas(raw: string, scale = 1, template = ''): string
  {
  let line = lines[i];
  const matchXY = reXY.exec(line);
+ const matchScale = regScale.exec(line);
+ const matchRect = regRect.exec(line);
 
  if (matchXY)
  {
@@ -92,6 +100,21 @@ function rescaleAtlas(raw: string, scale = 1, template = ''): string
  // Rewrite line with new values
  line = line.replace(reXY, `$1${x}$3${y}`);
  }
+ else if (matchScale)
+ {
+ const newScale = Number(matchScale[2]) * scale;
+
+ line = line.replace(regScale, `$1${newScale}`);
+ }
+ else if (matchRect)
+ {
+ const x1 = Math.floor(Number(matchRect[2]) * scale);
+ const y1 = Math.floor(Number(matchRect[4]) * scale);
+ const x2 = Math.floor(Number(matchRect[6]) * scale);
+ const y2 = Math.floor(Number(matchRect[8]) * scale);
+
+ line = line.replace(regRect, `$1${x1}$3${y1}$5${x2}$7${y2}`);
+ }
 
  if (reImg.exec(line))
  {