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Simplify updateRectMinMax in order to use slightly less memory

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This commit is contained in:
Calixte Denizet 2025-04-01 22:16:27 +02:00
parent a45f961a1c
commit 41bed561f0
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 // 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 // bounding box and translated to the correct position so we don't need to
// apply the bounding box to it. // 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); operatorList.addOp(OPS.paintFormXObjectBegin, args);
await this.getOperatorList({ await this.getOperatorList({

9
src/core/operator_list.js
View File

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

37
src/display/canvas.js
View File

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