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Merge pull request #19752 from calixteman/simplify_updateRectMinMax

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Simplify updateRectMinMax in order to use slightly less memory
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calixteman 2025-04-03 18:25:30 +02:00 • committed by GitHub
commit ff2d95a9b6
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3 changed files with 34 additions and 16 deletions
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4
src/core/evaluator.js
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@ -516,7 +516,9 @@ class PartialEvaluator {
// If it's a group, a new canvas will be created that is the size of the
// bounding box and translated to the correct position so we don't need to
// apply the bounding box to it.
const args = group ? [matrix, null] : [matrix, bbox];
const f32matrix = matrix && new Float32Array(matrix);
const f32bbox = (!group && bbox && new Float32Array(bbox)) || null;
const args = [f32matrix, f32bbox];
operatorList.addOp(OPS.paintFormXObjectBegin, args);
await this.getOperatorList({

9
src/core/operator_list.js
View file

@ -780,6 +780,15 @@ class OperatorList {
transfers.push(data.buffer, minMax.buffer);
}
break;
case OPS.paintFormXObjectBegin:
const [matrix, bbox] = argsArray[i];
if (matrix) {
transfers.push(matrix.buffer);
}
if (bbox) {
transfers.push(bbox.buffer);
}
break;
}
}
return transfers;

37
src/display/canvas.js
View file

@ -339,20 +339,27 @@ class CanvasExtraState {
return clone;
}
updateRectMinMax(transform, rect) {
const p1 = [rect[0], rect[1]];
Util.applyTransform(p1, transform);
const p2 = [rect[2], rect[3]];
Util.applyTransform(p2, transform);
const p3 = [rect[0], rect[3]];
Util.applyTransform(p3, transform);
const p4 = [rect[2], rect[1]];
Util.applyTransform(p4, transform);
this.minX = Math.min(this.minX, p1[0], p2[0], p3[0], p4[0]);
this.minY = Math.min(this.minY, p1[1], p2[1], p3[1], p4[1]);
this.maxX = Math.max(this.maxX, p1[0], p2[0], p3[0], p4[0]);
this.maxY = Math.max(this.maxY, p1[1], p2[1], p3[1], p4[1]);
updateRectMinMax([m0, m1, m2, m3, m4, m5], [r0, r1, r2, r3]) {
const m0r0m4 = m0 * r0 + m4;
const m0r2m4 = m0 * r2 + m4;
const m1r0m5 = m1 * r0 + m5;
const m1r2m5 = m1 * r2 + m5;
const m2r1 = m2 * r1;
const m2r3 = m2 * r3;
const m3r1 = m3 * r1;
const m3r3 = m3 * r3;
const a0 = m0r0m4 + m2r1;
const a1 = m0r2m4 + m2r3;
const a2 = m0r0m4 + m2r3;
const a3 = m0r2m4 + m2r1;
const b0 = m1r0m5 + m3r1;
const b1 = m1r2m5 + m3r3;
const b2 = m1r0m5 + m3r3;
const b3 = m1r2m5 + m3r1;
this.minX = Math.min(this.minX, a0, a1, a2, a3);
this.maxX = Math.max(this.maxX, a0, a1, a2, a3);
this.minY = Math.min(this.minY, b0, b1, b2, b3);
this.maxY = Math.max(this.maxY, b0, b1, b2, b3);
}
getPathBoundingBox(pathType = PathType.FILL, transform = null) {
@ -2275,7 +2282,7 @@ class CanvasGraphics {
this.baseTransform = getCurrentTransform(this.ctx);
if (bbox) {
this.current.updateRectMinMax(getCurrentTransform(this.ctx), bbox);
this.current.updateRectMinMax(this.baseTransform, bbox);
const [x0, y0, x1, y1] = bbox;
const clip = new Path2D();
clip.rect(x0, y0, x1 - x0, y1 - y0);