mirror of
https://github.com/placeAtlas/atlas.git
synced 2024-12-25 09:14:33 +01:00
415 lines
9 KiB
JavaScript
415 lines
9 KiB
JavaScript
|
|
|
|
|
|
/*
|
|
========================================================================
|
|
The /r/place Atlas
|
|
|
|
An Atlas of Reddit's /r/place, with information to each
|
|
artwork of the canvas provided by the community.
|
|
|
|
Copyright (C) 2017 Roland Rytz <roland@draemm.li>
|
|
Licensed under the GNU Affero General Public License Version 3
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as
|
|
published by the Free Software Foundation, either version 3 of the
|
|
License, or (at your option) any later version.
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
For more information, see:
|
|
https://draemm.li/various/place-atlas/license.txt
|
|
|
|
========================================================================
|
|
*/
|
|
|
|
|
|
var innerContainer = document.getElementById("innerContainer");
|
|
var container = document.getElementById("container");
|
|
var canvas = document.getElementById("highlightCanvas");
|
|
var context = canvas.getContext("2d");
|
|
|
|
var zoom = 1;
|
|
|
|
if(window.devicePixelRatio){
|
|
zoom = 1/window.devicePixelRatio;
|
|
}
|
|
|
|
var maxZoom = 128;
|
|
var minZoom = 0.1;
|
|
|
|
var zoomOrigin = [0, 0];
|
|
var scaleZoomOrigin = [0, 0];
|
|
|
|
var dragging = false;
|
|
var lastPosition = [0, 0];
|
|
|
|
var viewportSize = [0, 0];
|
|
|
|
function applyView(){
|
|
|
|
//console.log(zoomOrigin, scaleZoomOrigin);
|
|
//console.log(scaleZoomOrigin[0]);
|
|
|
|
scaleZoomOrigin[0] = Math.max(-500, Math.min(500, scaleZoomOrigin[0]));
|
|
scaleZoomOrigin[1] = Math.max(-500, Math.min(500, scaleZoomOrigin[1]));
|
|
|
|
zoomOrigin = [scaleZoomOrigin[0]*zoom, scaleZoomOrigin[1]*zoom];
|
|
|
|
innerContainer.style.height = (~~(zoom*1000))+"px";
|
|
innerContainer.style.width = (~~(zoom*1000))+"px";
|
|
|
|
innerContainer.style.left = ~~(container.clientWidth/2 - innerContainer.clientWidth/2 + zoomOrigin[0] + container.offsetLeft)+"px";
|
|
innerContainer.style.top = ~~(container.clientHeight/2 - innerContainer.clientHeight/2 + zoomOrigin[1] + container.offsetTop)+"px";
|
|
|
|
}
|
|
|
|
init();
|
|
|
|
function init(){
|
|
|
|
//console.log(document.documentElement.clientWidth, document.documentElement.clientHeight);
|
|
|
|
zoomOrigin = [0, 0];
|
|
applyView();
|
|
|
|
var initialPinchDistance = 0;
|
|
var initialPinchZoom = 0;
|
|
var initialPinchZoomOrigin = [0, 0];
|
|
|
|
var desiredZoom;
|
|
var zoomAnimationFrame;
|
|
|
|
var mode = "view";
|
|
|
|
var args = window.location.search;
|
|
if(args){
|
|
mode = args.split("mode=")[1];
|
|
if(mode){
|
|
mode = mode.split("&")[0];
|
|
} else {
|
|
mode = "view";
|
|
}
|
|
}
|
|
|
|
if(mode == "view"){
|
|
|
|
wrapper.className = wrapper.className.replace(/ drawMode/g, "");
|
|
initView();
|
|
|
|
} else if(mode=="draw"){
|
|
|
|
wrapper.className += " draw";
|
|
initDraw();
|
|
|
|
} else if(mode=="about"){
|
|
window.location = "./about.html";
|
|
} else if(mode=="overlap"){
|
|
wrapper.className = wrapper.className.replace(/ drawMode/g, "");
|
|
if(initOverlap){
|
|
initOverlap();
|
|
}
|
|
}
|
|
|
|
document.getElementById("loading").style.display = "none";
|
|
|
|
document.getElementById("zoomInButton").addEventListener("click", function(e){
|
|
|
|
/*if(zoomAnimationFrame){
|
|
window.cancelAnimationFrame(zoomAnimationFrame);
|
|
}*/
|
|
|
|
var x = container.clientWidth/2;
|
|
var y = container.clientHeight/2;
|
|
|
|
initialPinchZoomOrigin = [
|
|
scaleZoomOrigin[0],
|
|
scaleZoomOrigin[1]
|
|
];
|
|
|
|
initialPinchZoom = zoom;
|
|
|
|
lastPosition = [x, y];
|
|
zoom = zoom * 2;
|
|
zoom = Math.max(minZoom, Math.min(maxZoom, zoom));
|
|
|
|
applyZoom(x, y, zoom);
|
|
|
|
});
|
|
|
|
document.getElementById("zoomOutButton").addEventListener("click", function(e){
|
|
|
|
/*if(zoomAnimationFrame){
|
|
window.cancelAnimationFrame(zoomAnimationFrame);
|
|
}*/
|
|
|
|
var x = container.clientWidth/2;
|
|
var y = container.clientHeight/2;
|
|
|
|
initialPinchZoomOrigin = [
|
|
scaleZoomOrigin[0],
|
|
scaleZoomOrigin[1]
|
|
];
|
|
|
|
initialPinchZoom = zoom;
|
|
|
|
lastPosition = [x, y];
|
|
zoom = zoom / 2;
|
|
zoom = Math.max(minZoom, Math.min(maxZoom, zoom));
|
|
|
|
applyZoom(x, y, zoom);
|
|
});
|
|
|
|
document.getElementById("zoomResetButton").addEventListener("click", function(e){
|
|
zoom = 1;
|
|
zoomOrigin = [0, 0];
|
|
scaleZoomOrigin = [0, 0];
|
|
updateLines();
|
|
applyView();
|
|
});
|
|
|
|
container.addEventListener("dblclick", function(e){
|
|
/*if(zoomAnimationFrame){
|
|
window.cancelAnimationFrame(zoomAnimationFrame);
|
|
}*/
|
|
|
|
var x = e.clientX - container.offsetLeft;
|
|
var y = e.clientY - container.offsetTop;
|
|
|
|
initialPinchZoomOrigin = [
|
|
scaleZoomOrigin[0],
|
|
scaleZoomOrigin[1]
|
|
];
|
|
|
|
initialPinchZoom = zoom;
|
|
|
|
lastPosition = [x, y];
|
|
|
|
if(e.ctrlKey){
|
|
|
|
zoom = zoom / 2;
|
|
|
|
} else {
|
|
|
|
zoom = zoom * 2;
|
|
}
|
|
|
|
zoom = Math.max(minZoom, Math.min(maxZoom, zoom));
|
|
applyZoom(x, y, zoom);
|
|
|
|
e.preventDefault();
|
|
});
|
|
|
|
|
|
container.addEventListener("wheel", function(e){
|
|
|
|
/*if(zoomAnimationFrame){
|
|
window.cancelAnimationFrame(zoomAnimationFrame);
|
|
}*/
|
|
|
|
var x = e.clientX - container.offsetLeft;
|
|
var y = e.clientY - container.offsetTop;
|
|
|
|
initialPinchZoomOrigin = [
|
|
scaleZoomOrigin[0],
|
|
scaleZoomOrigin[1]
|
|
];
|
|
|
|
initialPinchZoom = zoom;
|
|
|
|
lastPosition = [x, y];
|
|
|
|
if(e.deltaY > 0){
|
|
|
|
zoom = zoom / 2;
|
|
|
|
} else if(e.deltaY < 0){
|
|
|
|
zoom = zoom * 2;
|
|
}
|
|
|
|
zoom = Math.max(minZoom, Math.min(maxZoom, zoom));
|
|
applyZoom(x, y, zoom);
|
|
|
|
e.preventDefault();
|
|
});
|
|
|
|
/*function setDesiredZoom(x, y, target){
|
|
zoom = (zoom*2 + target)/3;
|
|
//console.log(zoom);
|
|
if(Math.abs(1 - zoom/target) <= 0.01){
|
|
zoom = target;
|
|
}
|
|
applyZoom(x, y, zoom);
|
|
if(zoom != target){
|
|
zoomAnimationFrame = window.requestAnimationFrame(function(){
|
|
setDesiredZoom(x, y, target);
|
|
});
|
|
}
|
|
}*/
|
|
|
|
container.addEventListener("mousedown", function(e){
|
|
mousedown(e.clientX, e.clientY);
|
|
e.preventDefault();
|
|
});
|
|
|
|
container.addEventListener("touchstart", function(e){
|
|
|
|
if(e.touches.length == 2){
|
|
e.preventDefault();
|
|
}
|
|
|
|
touchstart(e);
|
|
|
|
});
|
|
|
|
function mousedown(x, y){
|
|
lastPosition = [x, y];
|
|
dragging = true;
|
|
}
|
|
|
|
function touchstart(e){
|
|
|
|
if(e.touches.length == 1){
|
|
|
|
mousedown(e.touches[0].clientX, e.touches[0].clientY);
|
|
|
|
} else if(e.touches.length == 2){
|
|
|
|
initialPinchDistance = Math.sqrt(
|
|
Math.pow(e.touches[0].clientX - e.touches[1].clientX, 2)
|
|
+ Math.pow(e.touches[0].clientY - e.touches[1].clientY, 2)
|
|
);
|
|
|
|
initialPinchZoom = zoom;
|
|
initialPinchZoomOrigin = [
|
|
scaleZoomOrigin[0],
|
|
scaleZoomOrigin[1]
|
|
];
|
|
|
|
mousedown(
|
|
(e.touches[0].clientX + e.touches[1].clientX)/2,
|
|
(e.touches[0].clientY + e.touches[1].clientY)/2
|
|
);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
window.addEventListener("mousemove", function(e){
|
|
updateLines();
|
|
mousemove(e.clientX, e.clientY);
|
|
if(dragging){
|
|
e.preventDefault();
|
|
}
|
|
});
|
|
window.addEventListener("touchmove", function(e){
|
|
|
|
if(e.touches.length == 2 || e.scale > 1){
|
|
e.preventDefault();
|
|
}
|
|
|
|
touchmove(e);
|
|
|
|
},
|
|
{passive: false}
|
|
);
|
|
|
|
function mousemove(x, y){
|
|
if(dragging){
|
|
var deltaX = x - lastPosition[0];
|
|
var deltaY = y - lastPosition[1];
|
|
lastPosition = [x, y];
|
|
|
|
zoomOrigin[0] += deltaX;
|
|
zoomOrigin[1] += deltaY;
|
|
|
|
scaleZoomOrigin[0] += deltaX/zoom;
|
|
scaleZoomOrigin[1] += deltaY/zoom;
|
|
|
|
previousZoomOrigin = [zoomOrigin[0], zoomOrigin[1]];
|
|
previousScaleZoomOrigin = [scaleZoomOrigin[0], scaleZoomOrigin[1]];
|
|
|
|
updateLines();
|
|
applyView();
|
|
}
|
|
}
|
|
|
|
function touchmove(e){
|
|
|
|
updateLines();
|
|
|
|
if(e.touches.length == 1){
|
|
|
|
mousemove(e.touches[0].clientX, e.touches[0].clientY);
|
|
|
|
} else if(e.touches.length == 2){
|
|
|
|
var newPinchDistance = Math.sqrt(
|
|
Math.pow(e.touches[0].clientX - e.touches[1].clientX, 2)
|
|
+ Math.pow(e.touches[0].clientY - e.touches[1].clientY, 2)
|
|
);
|
|
|
|
zoom = initialPinchZoom * newPinchDistance / initialPinchDistance;
|
|
|
|
var x = (e.touches[0].clientX + e.touches[1].clientX)/2 - container.offsetLeft;
|
|
var y = (e.touches[0].clientY + e.touches[1].clientY)/2 - container.offsetTop;
|
|
|
|
applyZoom(x, y, zoom);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function applyZoom(x, y, zoom){
|
|
|
|
var deltaX = x - lastPosition[0];
|
|
var deltaY = y - lastPosition[1];
|
|
|
|
var pinchTranslateX = (x - container.clientWidth/2 - deltaX);
|
|
var pinchTranslateY = (y - container.clientHeight/2 - deltaY);
|
|
|
|
scaleZoomOrigin[0] = initialPinchZoomOrigin[0] + deltaX/zoom + pinchTranslateX/zoom - pinchTranslateX/initialPinchZoom;
|
|
scaleZoomOrigin[1] = initialPinchZoomOrigin[1] + deltaY/zoom + pinchTranslateY/zoom - pinchTranslateY/initialPinchZoom;
|
|
|
|
zoomOrigin[0] = scaleZoomOrigin[0]*zoom;
|
|
zoomOrigin[1] = scaleZoomOrigin[1]*zoom;
|
|
|
|
applyView();
|
|
updateLines();
|
|
}
|
|
|
|
window.addEventListener("mouseup", function(e){
|
|
if(dragging){
|
|
e.preventDefault();
|
|
}
|
|
mouseup(e.clientX, e.clientY);
|
|
});
|
|
window.addEventListener("touchend", touchend);
|
|
|
|
function mouseup(x, y){
|
|
if(dragging){
|
|
dragging = false;
|
|
}
|
|
}
|
|
|
|
function touchend(e){
|
|
|
|
if(e.touches.length == 0){
|
|
|
|
mouseup();
|
|
|
|
} else if(e.touches.length == 1){
|
|
initialPinchZoom = zoom;
|
|
lastPosition = [e.touches[0].clientX, e.touches[0].clientY];
|
|
}
|
|
|
|
}
|
|
|
|
window.addEventListener("resize", function(){
|
|
//console.log(document.documentElement.clientWidth, document.documentElement.clientHeight);
|
|
|
|
applyView();
|
|
});
|
|
|
|
}
|