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map.draw = new function(){
var base = this
base.animate = function(){
ctx.save()
map.draw.clear_canvas()
map.draw.ruler()
// ctx.scale( map.zoom, map.zoom )
// ctx.translate( map.center.a + map.bounds.a/2, map.center.b + map.bounds.b/2 )
// ctx.scale( -1, 1 )
ctx.translate( map.center.a, map.center.b )
ctx.translate( +map.bounds.a/2, +map.bounds.b/2 )
ctx.scale( map.zoom, map.zoom )
ctx.scale( -1, 1 )
map.draw.regions(clipper.regions)
map.draw.mouse(map.ui.mouse.cursor)
scene && map.draw.camera(scene.camera)
ctx.restore()
}
base.clear_canvas = function (){
ctx.fillStyle = "rgba(255,255,255,0.99)"
ctx.clearRect(0,0,w,h)
ctx.fillRect(0,0,w,h)
}
base.ruler = function (){
ctx.strokeStyle = "rgba(80,80,80,0.5)"
ctx.lineWidth = 1
var len = 5
for (var i = 0.5; i < w; i += 10) {
line(i, 0, i, len)
line(0, i, len, i)
}
}
base.regions = function(regions){
for (var i = 0; i < regions.length; i++) {
if (regions[i].dupe) continue
ctx.fillStyle = colors[i % colors.length]
fill_region(regions[i])
stroke_sides(regions[i])
}
}
base.mouse = function(mouse){
var radius = 5 / map.zoom
ctx.fillStyle = "rgba(255,0,0,0.4)";
ctx.beginPath();
ctx.arc(mouse.x.b, mouse.y.b, radius, 0, 2*Math.PI, false);
ctx.fill();
if (mouse.width() != 0 && mouse.height() != 0) {
if (map.ui.dragging) {
stroke_rect(mouse)
}
else {
ctx.fillStyle = "rgba(255,255,0,0.5)"
fill_region( mouse.clone().translate() )
}
}
}
base.camera = function(cam){
ctx.lineWidth = 0.5
ctx.save()
ctx.translate(cam.x, cam.z)
ctx.rotate(cam.rotationY)
var radius = 3 / map.zoom
ctx.fillStyle = '#888';
ctx.beginPath();
ctx.moveTo(0,0)
ctx.lineTo(-radius,-radius/2)
ctx.lineTo(0,radius*3)
ctx.lineTo(radius,-radius/2)
ctx.moveTo(0,0)
ctx.fill()
ctx.restore()
}
//
function line (x,y,a,b,translation){
if (translation) {
x += translation.a
a += translation.a
y += translation.b
b += translation.b
}
ctx.beginPath()
ctx.moveTo(x,y)
ctx.lineTo(a,b)
ctx.stroke()
}
function fill_region(r){
ctx.fillRect(r.x.a + r.translation.a,
r.y.a + r.translation.b,
r.x.length(),
r.y.length())
}
function stroke_sides (r){
if (r.sides & FRONT) line(r.x.a, r.y.a, r.x.b, r.y.a)
if (r.sides & BACK) line(r.x.a, r.y.b, r.x.b, r.y.b)
if (r.sides & LEFT) line(r.x.a, r.y.a, r.x.a, r.y.b)
if (r.sides & RIGHT) line(r.x.b, r.y.a, r.x.b, r.y.b)
}
function stroke_rect (r){
line(r.x.a, r.y.a, r.x.b, r.y.b, r.translation)
}
}
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