add basic webcam shaders

1 files changed, 8 insertions, 1 deletions

diff --git a/js/photo.js b/js/photo.js
index ae4558e..3f72cfc 100644
--- a/js/photo.js
+++ b/js/photo.js
@@ -108,12 +108,15 @@ var Photo = (function(){
     null,
     null,
   ]
-  var colors = COLORS, recolor_fn = null
+  var colors = COLORS, recolor_fn = null, shade_fn = null
   var canvas = document.createElement("canvas"), ctx = canvas.getContext('2d'), pixels
 
   function set_colors (a) {
     colors = a
   }
+  function set_shade_fn (fn) {
+    shade_fn = fn
+  }
   function set_recolor_fn (fn) {
     recolor_fn = fn
   }
@@ -154,6 +157,9 @@ var Photo = (function(){
         pixel[1] = data[t+1]
         pixel[2] = data[t+2]
         pixel[3] = data[t+3]
+        if (shade_fn) {
+          shade_fn(data, pixel, j, i, w, h)
+        }
         if (Photo.denoise) { denoise_pixel(data, w, h, i, j, pixel, Photo.denoise) }
         row[j] = closest_to(pixel)
       }
@@ -289,6 +295,7 @@ var Photo = (function(){
     reds: REDS,
     yellows: YELLOWS,
     blues: BLUES,
+    set_shade_fn: set_shade_fn,
     set_recolor_fn: set_recolor_fn,
     set_colors: set_colors,
     closest_to: closest_to,