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Map.Draw = function(map, opt){
opt = defaults(opt, { minimap: false })
var draw = this
var ctx = map.canvas.getContext("2d")
draw.animate = function(){
ctx.save()
draw.clear()
draw.fill("rgba(255,255,255,0.98)")
if (opt.minimap) {
ctx.translate( map.dimensions.a * 1/2, map.dimensions.b * 1/2)
ctx.scale( map.zoom, map.zoom )
ctx.translate( opt.center.x, - opt.center.z )
ctx.scale( -1, 1 )
draw.coords()
draw.regions(Rooms.regions, [ "#fff" ], "#000")
draw.camera(scene.camera)
}
else {
ctx.translate( map.dimensions.a * 1/2, map.dimensions.b * 1/2)
ctx.scale( map.zoom, map.zoom )
ctx.translate( map.center.a, map.center.b )
ctx.scale( -1, 1 )
draw.regions(Rooms.regions, [ "#f8f8f8" ], "#000")
draw.mouse(map.ui.mouse.cursor)
draw.coords()
scene && draw.camera(scene.camera)
}
ctx.restore()
}
// changes the ctx temporarily
draw.render = function(){
var thumbnail_width = 1000
var thumbnail_height = 750
var extent = Rooms.extent()
var center = extent.center()
var extent_width = extent.width()
var extent_height = extent.height()
var zoom
if (extent_width > extent_height) {
zoom = thumbnail_width / extent.width() * 0.9
}
else {
zoom = thumbnail_height / extent.height() * 0.9
}
var canvas = document.createElement("canvas")
ctx = canvas.getContext('2d')
canvas.width = thumbnail_width
canvas.height = thumbnail_height
draw.clear()
ctx.translate( thumbnail_width * 1/2, thumbnail_height * 1/2)
ctx.scale( zoom, zoom )
ctx.translate( center.a, -center.b )
ctx.scale( -1, 1 )
draw.regions(Rooms.regions, ["#fff"], null)
ctx.restore()
// invert opacity
var pixelData = ctx.getImageData(0, 0, canvas.width, canvas.height)
var pixels = pixelData.data
for (var i = 0, k, _len = pixels.length; i < _len; i++) {
k = i*4
if (pixels[k+3] == 0) {
pixels[k] = pixels[k+1] = pixels[k+2] = pixels[k+3] = 255
}
else {
pixels[k] = pixels[k+1] = pixels[k+2] = 255
pixels[k+3] = 0
}
}
ctx.putImageData(pixelData, 0, 0)
// reset the ctx
ctx = map.canvas.getContext("2d")
return canvas
}
draw.clear = function(){
ctx.clearRect(0, 0, map.dimensions.a, map.dimensions.b)
}
draw.fill = function(fillStyle){
ctx.fillStyle = fillStyle
ctx.fillRect(0, 0, map.dimensions.a, map.dimensions.b)
}
draw.regions = function(regions, colors, stroke){
if (stroke) {
ctx.strokeStyle = "#000"
ctx.lineWidth = (1 / map.zoom)
}
for (var i = 0; i < regions.length; i++) {
if (regions[i].dupe) continue
ctx.fillStyle = colors[i % colors.length]
fill_region(regions[i])
if (stroke) {
stroke_sides(regions[i])
}
}
}
draw.mouse = function(mouse){
var radius = 3 / 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() )
}
}
}
draw.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()
}
draw.coords = function(){
/*
ctx.fillStyle = "#888";
dot_at(0,0)
ctx.fillStyle = "#bbb";
dot_at(100,0)
dot_at(0,100)
ctx.fillStyle = "#ddd";
dot_at(200,0)
dot_at(0,200)
ctx.fillStyle = "#eee";
dot_at(300,0)
dot_at(0,300)
*/
ctx.strokeStyle = "rgba(0,0,0,0.1)"
ctx.lineWidth = 1/map.zoom
var sides = map.sides()
var quant = sides.clone().quantize(200)
for (var x = quant.x.a - 200; x <= quant.x.b; x += 200) {
line(x, sides.y.a, x, sides.y.b)
}
for (var y = quant.y.a - 200; y <= quant.y.b; y += 200) {
line(sides.x.a, y, sides.x.b, y)
}
}
//
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)
}
function dot_at (x,z){
ctx.save()
ctx.translate(x,z)
var radius = 2 / map.zoom
ctx.beginPath();
ctx.arc(0, 0, radius, 0, 2*Math.PI, false);
ctx.fill();
ctx.restore()
}
}
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