scratchfoundation/scratch-paint
1
0
Fork 0
mirror of https://github.com/scratchfoundation/scratch-paint.git synced 2024-12-23 05:52:42 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

Use divideAt for PointTool.addPoint

Browse source
This commit is contained in:
adroitwhiz 2020-04-13 12:16:25 -04:00
parent 87e01639c0
commit e4017aa658
1 changed files with 7 additions and 43 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

50
src/helper/selection-tools/point-tool.js
View file

@ -1,4 +1,3 @@
import paper from '@scratch/paper';
import {HANDLE_RATIO, snapDeltaToAngle} from '../math'; import {HANDLE_RATIO, snapDeltaToAngle} from '../math';
import {getActionBounds} from '../view'; import {getActionBounds} from '../view';
import {clearSelection, getSelectedLeafItems, getSelectedSegments} from '../selection'; import {clearSelection, getSelectedLeafItems, getSelectedSegments} from '../selection';
@ -59,7 +58,7 @@ class PointTool {
} }
hitProperties.hitResult.segment.selected = true; hitProperties.hitResult.segment.selected = true;
} }
this.selectedItems = getSelectedLeafItems(); this.selectedItems = getSelectedLeafItems();
} }
/** /**
@ -68,51 +67,16 @@ class PointTool {
* @param {?boolean} hitProperties.multiselect Whether to multiselect on mouse down (e.g. shift key held) * @param {?boolean} hitProperties.multiselect Whether to multiselect on mouse down (e.g. shift key held)
*/ */
addPoint (hitProperties) { addPoint (hitProperties) {
// Length of curve from previous point to new point const newSegment = hitProperties.hitResult.item.divideAt(hitProperties.hitResult.location);
const beforeCurveLength = hitProperties.hitResult.location.curveOffset;
const afterCurveLength =
hitProperties.hitResult.location.curve.length - hitProperties.hitResult.location.curveOffset;
// Handle length based on curve length until next point // If we're adding a point in the middle of a straight line, it won't be smooth by default, so smooth it
let handleIn = hitProperties.hitResult.location.tangent.multiply(-beforeCurveLength * HANDLE_RATIO); if (!newSegment.hasHandles()) newSegment.smooth();
let handleOut = hitProperties.hitResult.location.tangent.multiply(afterCurveLength * HANDLE_RATIO);
// Don't let one handle overwhelm the other (results in path doubling back on itself weirdly)
if (handleIn.length > 3 * handleOut.length) {
handleIn = handleIn.multiply(3 * handleOut.length / handleIn.length);
}
if (handleOut.length > 3 * handleIn.length) {
handleOut = handleOut.multiply(3 * handleIn.length / handleOut.length);
}
const beforeSegment = hitProperties.hitResult.item.segments[hitProperties.hitResult.location.index];
const afterSegment = hitProperties.hitResult.item.segments[hitProperties.hitResult.location.index + 1];
// Add segment
const newSegment = new paper.Segment(hitProperties.hitResult.location.point, handleIn, handleOut);
hitProperties.hitResult.item.insert(hitProperties.hitResult.location.index + 1, newSegment);
hitProperties.hitResult.segment = newSegment; hitProperties.hitResult.segment = newSegment;
if (!hitProperties.multiselect) { if (!hitProperties.multiselect) {
clearSelection(this.clearSelectedItems); clearSelection(this.clearSelectedItems);
} }
newSegment.selected = true; newSegment.selected = true;
// Adjust handles of curve before and curve after to account for new curve length
if (beforeSegment && beforeSegment.handleOut) {
if (afterSegment) {
beforeSegment.handleOut =
beforeSegment.handleOut.multiply(beforeCurveLength * HANDLE_RATIO / beforeSegment.handleOut.length);
} else {
beforeSegment.handleOut = null;
}
}
if (afterSegment && afterSegment.handleIn) {
if (beforeSegment) {
afterSegment.handleIn =
afterSegment.handleIn.multiply(afterCurveLength * HANDLE_RATIO / afterSegment.handleIn.length);
} else {
afterSegment.handleIn = null;
}
}
} }
removePoint (hitResult) { removePoint (hitResult) {
const index = hitResult.segment.index; const index = hitResult.segment.index;
@ -144,7 +108,7 @@ class PointTool {
this.deselectOnMouseUp = null; this.deselectOnMouseUp = null;
this.invertDeselect = false; this.invertDeselect = false;
this.deleteOnMouseUp = null; this.deleteOnMouseUp = null;
const point = event.point; const point = event.point;
const bounds = getActionBounds(); const bounds = getActionBounds();
point.x = Math.max(bounds.left, Math.min(point.x, bounds.right)); point.x = Math.max(bounds.left, Math.min(point.x, bounds.right));
@ -154,7 +118,7 @@ class PointTool {
const dragVector = point.subtract(event.downPoint); const dragVector = point.subtract(event.downPoint);
const delta = point.subtract(this.lastPoint); const delta = point.subtract(this.lastPoint);
this.lastPoint = point; this.lastPoint = point;
const selectedSegments = getSelectedSegments(); const selectedSegments = getSelectedSegments();
for (const seg of selectedSegments) { for (const seg of selectedSegments) {
// add the point of the segment before the drag started // add the point of the segment before the drag started
@ -172,7 +136,7 @@ class PointTool {
} }
onMouseUp () { onMouseUp () {
this.lastPoint = null; this.lastPoint = null;
// resetting the items and segments origin points for the next usage // resetting the items and segments origin points for the next usage
let moved = false; let moved = false;
const selectedSegments = getSelectedSegments(); const selectedSegments = getSelectedSegments();