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Added stencils

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This commit is contained in:
Devine Lu Linvega
2016-12-28 18:29:51 -07:00
parent 2e2c2014ce
commit 407acccfe2
13 changed files with 173 additions and 83 deletions
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46
scripts/filters/balance.js Normal file
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Filter.prototype.filter_balance = function(pixels = this.pixels(),p = null)
{
// / media/filter.color.jpg
// : balance 0.5 2.4 1.2
p[0] = parseFloat(p[0]);
p[1] = p[1] ? parseFloat(p[1]) : parseFloat(p[0]);
p[2] = p[2] ? parseFloat(p[2]) : parseFloat(p[0]);
var data = pixels.data;
// Multiply
if(p[0] % 1 !== 0 && p[1] % 1 !== 0 && p[2] % 1 !== 0){
console.log("Multi");
for (var i = 0; i < data.length; i += 4) {
data[i] = data[i] * p[0]; // red
data[i + 1] = data[i + 1] * p[1]; // green
data[i + 2] = data[i + 2] * p[2]; // blue
// Clamp
data[i] = data[i] < 255 ? data[i] : 255;
data[i + 1] = data[i + 1] < 255 ? data[i + 1] : 255;
data[i + 2] = data[i + 2] < 255 ? data[i + 2] : 255;
}
}
// Add
else{
p[0] = parseInt(p[0]);
p[1] = p[1] ? parseInt(p[1]) : parseInt(p[0]);
p[2] = p[2] ? parseInt(p[2]) : parseInt(p[0]);
for (i = 0; i < data.length; i += 4) {
data[i] = data[i] + p[0]; // red
data[i + 1] = data[i + 1] + p[1]; // green
data[i + 2] = data[i + 2] + p[2]; // blue
// Clamp
data[i] = data[i] < 255 ? data[i] : 255;
data[i + 1] = data[i + 1] < 255 ? data[i + 1] : 255;
data[i + 2] = data[i + 2] < 255 ? data[i + 2] : 255;
}
}
ronin.canvas.clear();
ronin.surface.context().putImageData(pixels, 0, 0, 0, 0, pixels.width, pixels.height);
}

38
scripts/filters/chromatic.js Normal file
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Filter.prototype.filter_chromatic = function(pixels = this.pixels(),p = null)
{
var s;
if(p.length === 0)
s = {r:2,g:2,b:2};
else if(p.length < 3)
s = {r:parseFloat(p[0]), g:parseFloat(p[0])*.5, b:0};
else
s = {r:parseFloat(p[0]), g:parseFloat(p[1]), b:parseFloat(p[2])};
var hw = pixels.width*.5;
var hh = pixels.height*.5;
var maxLength = Math.sqrt(hw*hw+hh*hh);
var output = new ImageData(pixels.width, pixels.height);
for (var i=0; i<pixels.width; i++) {
for(var j=0; j<pixels.height; j++){
var x = i-hw;
var y = j-hh;
var a = Math.atan2(y,x);
var d = Math.sqrt(x*x+y*y);
var f = (d-s.r*d/maxLength);
x = Math.cos(a)*f+hw;
y = Math.sin(a)*f+hh;
var r = this.get_color_bilinear(pixels, x, y);
f = (d-s.g*d/maxLength);
x = Math.cos(a)*f+hw;
y = Math.sin(a)*f+hh;
var g = this.get_color_bilinear(pixels, x, y);
f = (d-s.b*d/maxLength);
x = Math.cos(a)*f+hw;
y = Math.sin(a)*f+hh;
var b = this.get_color_bilinear(pixels, x, y);
var c = {r:r.r, g:g.g, b:b.b,a:Math.max(r.a, Math.max(g.a,b.a))};
this.set_color(output, c, i,j);
}
}
ronin.canvas.clear();
ronin.surface.context().putImageData(output, 0, 0, 0, 0, pixels.width, pixels.height);
}

27
scripts/filters/eval.js Normal file
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Filter.prototype.filter_eval = function(pixels = this.pixels(),p = null)
{
console.log("working");
// : eval {x} % 100 == 0
var data = pixels.data;
for (var i = 0; i < data.length; i += 4) {
var x = (i/4) % pixels.width;
var y = Math.floor((i/4)/pixels.width);
var q = (x % parseInt(p[0]) === 0 && y % parseInt(p[1]) === 0);
if(x % 20 == 0 && y % 20 == 0){
data[i] = 50; // red
data[i + 1] = 50; // green
data[i + 2] = 50; // blue
data[i + 3] = 255; // alpha?
}
}
ronin.canvas.clear();
ronin.surface.context().putImageData(pixels, 0, 0, 0, 0, pixels.width, pixels.height);
console.log("done.");
}

60
scripts/filters/filter.js Normal file
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function Filter()
{
this.name = "Unknown";
this.parameters = [];
this.render = function(p)
{
console.log("render: Nothing here.");
}
this.preview = function(p)
{
console.log("render: Nothing here.");
}
this.set_color = function(pixels, color, x, y)
{
x = Math.max(0,Math.min(x,pixels.width-1));
y = Math.max(0,Math.min(y,pixels.height-1));
var index = (x+y*pixels.width)*4;
pixels.data[index] = color.r;
pixels.data[index+1] = color.g;
pixels.data[index+2] = color.b;
pixels.data[index+3] = color.a;
}
this.get_color = function(pixels,x,y)
{
x = Math.max(0,Math.min(x,pixels.width-1));
y = Math.max(0,Math.min(y,pixels.height-1));
var index = (x+y*pixels.width)*4;
return {r:pixels.data[index], g:pixels.data[index+1], b:pixels.data[index+2], a:pixels.data[index+3]};
}
this.get_color_bilinear = function(pixels, x, y)
{
var c1 = this.get_color(pixels, Math.floor(x),Math.floor(y));
var c2 = this.get_color(pixels, Math.ceil(x),Math.floor(y));
var c3 = this.get_color(pixels, Math.floor(x),Math.ceil(y));
var c4 = this.get_color(pixels, Math.ceil(x),Math.ceil(y));
return this.lerp_color(this.lerp_color(c1,c2, x%1),this.lerp_color(c3,c4, x%1), y%1);
}
this.lerp_color = function(c1, c2, t)
{
return {r:c1.r+t*(c2.r-c1.r), g:c1.g+t*(c2.g-c1.g), b:c1.b+t*(c2.b-c1.b), a:c1.a+t*(c2.a-c1.a)};
}
//
this.context = function()
{
return ronin.surface.active_layer.context();
}
this.pixels = function()
{
return this.context().getImageData(0,0,ronin.surface.size.width,ronin.surface.size.height);
}
}

19
scripts/filters/offset.js Normal file
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Filter.prototype.filter_offset = function(pixels = this.pixels(),p = null)
{
var v = 255; // defaults to 255 if no parameter specified
if (p.length > 0 && p[0]) {
v = parseInt(p[0]);
// permissible range is 0 <= v <= 255
if (v > 255) { v = 255;}
if (v < 0) { v = 0;}
}
var d = pixels.data;
for (var i=0; i<d.length; i+=4) {
for (var j=0; j<3; j++) {
d[i+j] = v - d[i+j];
}
}
ronin.canvas.clear();
ronin.surface.context().putImageData(pixels, 0, 0, 0, 0, pixels.width, pixels.height);
}

15
scripts/filters/saturation.js Normal file
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Filter.prototype.filter_saturation = function(pixels = this.pixels(),p = null)
{
var d = pixels.data;
for (var i=0; i<d.length; i+=4) {
var r = d[i];
var g = d[i+1];
var b = d[i+2];
// CIE luminance for the RGB
// The human eye is bad at seeing red and blue, so we de-emphasize them.
var v = 0.2126*r + 0.7152*g + 0.0722*b;
d[i] = d[i+1] = d[i+2] = v
}
ronin.canvas.clear();
ronin.surface.context().putImageData(pixels, 0, 0, 0, 0, pixels.width, pixels.height);
}

75
scripts/filters/stencil.js Normal file
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function Filter_Stencil()
{
Filter.call(this);
this.render = function()
{
this.draw();
}
this.preview = function()
{
}
this.draw = function()
{
var context = this.context();
var w = ronin.surface.size.width;
var h = ronin.surface.size.height;
context.translate(w/2,h/2);
context.rotate(20*Math.PI/180);
this.line(-w,0,w,0);
this.line(w*0.4,-h,w*0.4,h);
this.line(-w*0.4,-h,-w*0.4,h);
this.line(-w,h*0.25,w,h*0.25);
this.line(-w,-h*0.25,w,-h*0.25);
this.line(w*0.1,0,w*0.1,h);
this.line(-w*0.1,0,-w*0.1,-h);
this.circle(w*0.4,-h*0.25,w*0.05,1,1.5);
this.circle(-w*0.4,h*0.25,w*0.05,0,0.5);
context.font = "5px Arial";
context.fillStyle = "#000000";
context.fillText("GRID",(w*0.4)+10,10);
context.font = "5px Arial";
context.fillStyle = "#000000";
context.fillText("GRID",(-w*0.4)-20,-10);
context.rotate(-20*Math.PI/180);
context.translate(-w/2,-h/2);
}
this.line = function(x1,x2,y1,y2)
{
this.context().beginPath();
this.context().moveTo(x1,x2);
this.context().lineTo(y1,y2);
this.context().lineCap="round";
this.context().lineWidth = 0.5;
this.context().strokeStyle = "#000";
this.context().stroke();
this.context().closePath();
}
this.circle = function(x,y,r,c1,c2)
{
this.context().beginPath();
this.context().arc(x,y,r,c1*Math.PI,c2*Math.PI);
this.context().lineCap="round";
this.context().lineWidth = 0.5;
this.context().strokeStyle = "#000";
this.context().stroke();
this.context().closePath();
}
}