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Started lasso selection computing

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This commit is contained in:
Nicola 2021-12-29 23:16:16 +01:00
parent b37d050af8
commit 908cc1b17c
3 changed files with 83 additions and 8 deletions
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86
js/tools/LassoSelectionTool.js
View File

@ -1,6 +1,7 @@
class LassoSelectionTool extends SelectionTool {
currentPixels = []
currSelection = {}
currentPixels = [];
currSelection = {};
boundingBox = {minX: 9999999, maxX: -1, minY: 9999999, maxY: -1};
constructor (name, options, switchFunc, moveTool) {
super(name, options, switchFunc, moveTool);
@ -21,21 +22,33 @@ class LassoSelectionTool extends SelectionTool {
onDrag(mousePos) {
super.onDrag(mousePos);
let mouseX = mousePos[0] / currFile.zoom;
let mouseY = mousePos[1] / currFile.zoom;
if (this.currentPixels[this.currentPixels.length - 1] != mousePos)
this.currentPixels.push([mousePos[0] / currFile.zoom, mousePos[1] / currFile.zoom]);
this.drawSelection();
console.log("here selection");
if (mouseX > this.boundingBox.maxX)
this.boundingBox.maxX = Math.floor(mouseX);
if (mouseX < this.boundingBox.minX)
this.boundingBox.minX = Math.floor(mouseX);
if (mouseY < this.boundingBox.minY)
this.boundingBox.minY = Math.floor(mouseY);
if (mouseY > this.boundingBox.maxY)
this.boundingBox.maxY = Math.floor(mouseY);
}
onEnd(mousePos) {
super.onEnd(mousePos);
new HistoryState().EditCanvas();
this.currentPixels.push[this.startMousePos[0] / currFile.zoom, this.startMousePos[1] / currFile.zoom];
this.currentPixels.push([this.startMousePos[0] / currFile.zoom, this.startMousePos[1] / currFile.zoom]);
this.getSelection();
// Switch to the move tool so that the user can move the selection
this.switchFunc(this.moveTool);
this.moveTool.setSelectionData(null, this);
}
onSelect() {
@ -80,7 +93,70 @@ class LassoSelectionTool extends SelectionTool {
currFile.VFXLayer.context.closePath();
}
getSelection() {
cursorInSelectedArea(mousePos) {
}
getSelection() {
let selected = [];
if (this.currentPixels.length <= 1){
return;
}
for (let x=this.boundingBox.minX; x<this.boundingBox.maxX; x++) {
for (let y=this.boundingBox.minY; y<this.boundingBox.maxY; y++) {
let toCheck = [x, y];
let intersectionCount = 0;
if (!this.currentPixels.includes(toCheck)) {
for (let index = 1; index < this.currentPixels.length; index ++){
let start = this.currentPixels[index - 1];
let end = this.currentPixels[index];
let ray = {Start: toCheck, End: [9999, 0]};
let segment = {Start: start, End: end};
let rayDistance = {
x: ray.End[0] - ray.Start[0],
y: ray.End[1] - ray.Start[1]
};
let segDistance = {
x: segment.End[0] - segment.Start[0],
y: segment.End[1] - segment.Start[1]
};
let rayLength = Math.sqrt(Math.pow(rayDistance.x, 2) + Math.pow(rayDistance.y, 2));
let segLength = Math.sqrt(Math.pow(segDistance.x, 2) + Math.pow(segDistance.y, 2));
if ((rayDistance.x / rayLength == segDistance.x / segLength) &&
(rayDistance.y / rayLength == segDistance.y / segLength))
continue;
let T2 = (rayDistance.x * (segment.Start[1] - ray.Start[1]) + rayDistance.y * (ray.Start[0] - segment.Start[0])) / (segDistance.x * rayDistance.y - segDistance.y * rayDistance.x);
let T1 = (segment.Start[0] + segDistance.x * T2 - ray.Start[0]) / rayDistance.x;
//Parametric check.
if (T1 < 0) {
continue;
}
if (T2 < 0 || T2 > 1) {
continue;
}
if (isNaN(T1)) {
continue;
}
intersectionCount++;
}
if (intersectionCount & 1)
selected.push(toCheck);
}
}
}
for (let i=0; i<selected.length; i++) {
currFile.VFXLayer.context.fillStyle = "red";
currFile.VFXLayer.context.fillRect(selected[i][0], selected[i][1], 1, 1);
}
}
}

1
js/tools/RectangularSelectionTool.js
View File

@ -89,7 +89,6 @@ class RectangularSelectionTool extends SelectionTool {
currFile.TMPLayer.context.putImageData(this.currSelection.data, this.startMousePos[0], this.startMousePos[1]);
this.moveTool.setSelectionData(this.currSelection, this);
console.log("data set");
}
copySelection() {