pointvec/desktop/sources/scripts/guide.js
2018-05-08 21:05:19 +12:00

139 lines
3.6 KiB
JavaScript

function Guide()
{
this.el = document.createElement("canvas");
this.el.id = "guide";
this.el.width = 640;
this.el.height = 640;
this.el.style.width = "320px";
this.el.style.height = "320px";
this.start = function()
{
this.clear();
this.refresh();
}
this.toggle = function()
{
this.el.style.opacity = !this.el.style.opacity || this.el.style.opacity == 1 ? 0 : 1;
}
this.resize = function(size)
{
var offset = 30
this.el.width = (size.width+offset)*2;
this.el.height = (size.height+offset)*2;
this.el.style.width = (size.width+offset)+"px";
this.el.style.height = (size.height+offset)+"px";
this.refresh();
}
this.clear = function()
{
this.el.getContext('2d').clearRect(0, 0, this.el.width*2, this.el.height*2);
}
this.refresh = function()
{
this.clear();
// Markers
for (var x = dotgrid.grid_x; x >= 0; x--) {
for (var y = dotgrid.grid_y; y >= 0; y--) {
var pos_x = parseInt(x * dotgrid.grid_width) + dotgrid.grid_width ;
var pos_y = parseInt(y * dotgrid.grid_height) + dotgrid.grid_height ;
var is_step = x % dotgrid.block_x == 0 && y % dotgrid.block_y == 0;
var radius = is_step ? 2.5 : 1.5;
this.draw_marker({x:pos_x,y:pos_y},radius,is_step);
}
}
// Verteces
for(id in dotgrid.tool.verteces){
this.draw_vertex(dotgrid.tool.verteces[id]);
}
// Handles
for(segment_id in dotgrid.tool.layer()){
var segment = dotgrid.tool.layer()[segment_id];
for(vertex_id in segment.verteces){
var vertex = segment.verteces[vertex_id];
this.draw_handle(vertex);
}
}
// Translations
if(dotgrid.cursor.translation){
this.draw_translation();
}
// Cursor
this.draw_cursor(dotgrid.cursor.pos);
}
this.draw_vertex = function(pos, radius = 5)
{
var ctx = this.el.getContext('2d');
ctx.beginPath();
ctx.lineWidth = 2;
ctx.arc((pos.x * 2)+30, (pos.y * 2)+30, radius, 0, 2 * Math.PI, false);
ctx.fillStyle = dotgrid.theme.active.f_med;
ctx.fill();
ctx.closePath();
}
this.draw_marker = function(pos,radius = 1,step)
{
var ctx = this.el.getContext('2d');
ctx.beginPath();
ctx.lineWidth = 2;
ctx.arc(pos.x * 2, pos.y * 2, radius, 0, 2 * Math.PI, false);
ctx.fillStyle = step ? dotgrid.theme.active.f_med : dotgrid.theme.active.f_low;
ctx.fill();
ctx.closePath();
}
this.draw_handle = function(pos,radius = 15)
{
var ctx = this.el.getContext('2d');
ctx.beginPath();
ctx.lineWidth = 3;
ctx.lineCap="round";
ctx.arc((pos.x * 2)+30, (pos.y * 2)+30, radius, 0, 2 * Math.PI, false);
ctx.strokeStyle = dotgrid.theme.active.f_low;
ctx.stroke();
ctx.closePath();
}
this.draw_translation = function()
{
// From
var ctx = this.el.getContext('2d');
var from = dotgrid.cursor.translation.from;
var to = dotgrid.cursor.translation.to;
if(to.x<=0) {
ctx.beginPath();
ctx.moveTo((from.x * -2)+30,(from.y * 2)+30);
ctx.lineTo((to.x * -2)+30,(to.y * 2)+30);
ctx.lineCap="round";
ctx.lineWidth = 5;
ctx.strokeStyle = dotgrid.theme.active.b_inv;
ctx.stroke();
ctx.closePath();
}
}
this.draw_cursor = function(pos = dotgrid.cursor.pos,radius = 10)
{
var ctx = this.el.getContext('2d');
ctx.beginPath();
ctx.lineWidth = 3;
ctx.lineCap="round";
ctx.arc(Math.abs(pos.x * -2)+30, Math.abs(pos.y * 2)+30, radius, 0, 2 * Math.PI, false);
ctx.strokeStyle = dotgrid.theme.active.f_med;
ctx.stroke();
ctx.closePath();
}
}