GrandTabernacleAutoVI/tools/collidesTool/app.js

107 lines
2.6 KiB
JavaScript
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2023-11-15 13:09:06 +01:00
var ctx = document.getElementById("canvas").getContext("2d");
var cv = document.getElementById("canvas");
const fond = new Image();
fond.src = "../../assets/map/map7_recadr.png";
var mapWidth = fond.width
var mapHeith = fond.height
ctx.canvas.width = mapWidth
ctx.canvas.height = mapHeith
ctx.drawImage(fond, 0, 0, mapWidth, mapHeith);
var mode = "circle"
var data = {
squares: [],
circles: []
}
var start = []
var stop = []
var w = []
cv.addEventListener("mousedown", (e)=>{
const rect = canvas.getBoundingClientRect();
start = [(e.clientX- rect.left) * cv.width / rect.width, (e.clientY - rect.top) * cv.height / rect.height];
})
cv.addEventListener("mouseup", (e)=>{
const rect = canvas.getBoundingClientRect();
stop = [(e.clientX- rect.left) * cv.width / rect.width, (e.clientY - rect.top) * cv.height / rect.height];
w = [-(start[0]-stop[0]), -(start[1]-stop[1])]
if(mode=="rect"){
data.squares.push({
x: start[0],
y: start[1],
w: w[0],
h: w[1]
})
ctx.fillStyle = "#FF0000"
ctx.fillRect(start[0], start[1], w[0], w[1]);
}else if(mode=='circle'){
var radius = Math.sqrt(w[0]**2 + w[1]**2);
data.circles.push({
x: start[0],
y:start[1],
r: radius
})
ctx.fillStyle="#FF0000"
ctx.arc(start[0], start[1], radius, 0, 2*Math.PI, false);
ctx.fill()
}
ctx.closePath()
})
function circleMode(){
mode='circle'
}
function rectMode(){
mode="rect"
}
function download(filename, text) {
var element = document.createElement('a');
element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text));
element.setAttribute('download', filename);
element.style.display = 'none';
document.body.appendChild(element);
element.click();
document.body.removeChild(element);
}
function generateData(){
download("objects.json", JSON.stringify(data))
}
function render(){
ctx.fillStyle = "#FF0000"
ctx.clearRect(0, 0, cv.width, cv.height);
ctx.drawImage(fond, 0, 0, mapWidth, mapHeith);
for (let i = 0; i < data.squares.length; i++) {
ctx.fillRect(data.squares[i].x, data.squares[i].y, data.squares[i].w, data.squares[i].h);
}
for (let i = 0; i < data.circles.length; i++) {
ctx.beginPath()
ctx.arc(data.circles[i].x, data.circles[i].y, data.circles[i].r, 0, 2*Math.PI, false);
ctx.fill()
ctx.closePath();
}
}
function cancel(){
if(mode=="rect"){
data.squares.pop()
}else if(mode=='circle'){
data.circles.pop()
}
render();
}