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Allow for drag/drop of verteces

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This commit is contained in:
Devine Lu Linvega
2017-11-13 16:54:56 +13:00
parent 1923c4b04c
commit 66a34a6814
8 changed files with 143 additions and 25 deletions
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92
sources/scripts/guide.js
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@@ -2,34 +2,54 @@ function Guide()
{
this.el = document.createElement("canvas");
this.el.id = "guide";
this.el.width = 600;
this.el.height = 600;
this.el.style.width = "300px";
this.el.style.height = "300px";
this.markers;
this.el.width = 640;
this.el.height = 640;
this.el.style.width = "320px";
this.el.style.height = "320px";
this.widgets = document.createElement("canvas");
this.widgets.id = "widgets";
this.widgets.width = 640;
this.widgets.height = 640;
this.widgets.style.width = "320px";
this.widgets.style.height = "320px";
this.start = function()
{
this.update();
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;
dotgrid.guide.draw_marker({x:pos_x,y:pos_y},radius,is_step);
}
}
}
this.clear = function()
{
this.el.getContext('2d').clearRect(0, 0, 600, 600);
this.widgets.getContext('2d').clearRect(0, 0, 600, 600);
}
this.update = function()
{
this.clear();
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) ;
var pos_y = parseInt(y * dotgrid.grid_height) ;
var is_step = x % dotgrid.block_x == 0 && y % dotgrid.block_y == 0;
var radius = is_step ? 1.5 : 0.5;
dotgrid.guide.draw_marker({x:pos_x * 2,y:pos_y * 2},radius,is_step);
}
var handles = [];
for(id in dotgrid.segments){
var segment = dotgrid.segments[id];
handles = handles.concat(segment.handles())
}
for(id in handles){
var handle = handles[id];
this.draw_handle(handle,4);
}
// Translations
if(dotgrid.translation){
this.draw_translation();
}
}
@@ -37,8 +57,46 @@ function Guide()
{
var ctx = this.el.getContext('2d');
ctx.beginPath();
ctx.arc(pos.x, pos.y, radius, 0, 2 * Math.PI, false);
ctx.fillStyle = step ? 'green' : 'red';
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)
{
var ctx = this.widgets.getContext('2d');
ctx.beginPath();
ctx.arc((pos.x * 2)+20, (pos.y * 2)+20, 10, 0, 2 * Math.PI, false);
ctx.fillStyle = dotgrid.theme.active.f_high;
ctx.fill();
ctx.closePath();
ctx.beginPath();
ctx.arc((pos.x * 2)+20, (pos.y * 2)+20, radius, 0, 2 * Math.PI, false);
ctx.fillStyle = dotgrid.theme.active.f_high;
ctx.fill();
ctx.lineWidth = 3;
ctx.strokeStyle = dotgrid.theme.active.background;
ctx.stroke();
ctx.closePath();
}
this.draw_translation = function()
{
// From
var ctx = this.widgets.getContext('2d');
var from = dotgrid.translation.from;
var to = dotgrid.translation.to;
ctx.beginPath();
ctx.moveTo((from.x * -2)+20,(from.y * 2)+20);
ctx.lineTo((to.x * -2)+20,(to.y * 2)+20);
ctx.lineCap="round";
ctx.lineWidth = 5;
ctx.strokeStyle = dotgrid.theme.active.f_high;
ctx.stroke();
ctx.closePath();
}
}