From c8ba7a6b1f6406af3036fcda4b86ca057d982951 Mon Sep 17 00:00:00 2001
From: "David.Rodrigues" <david@sixhat.net>
Date: Thu, 8 Nov 2018 11:13:36 +0000
Subject: [PATCH] added early pget

---
 src/color.js | 27 +++++++++++++++++++++++----
 1 file changed, 23 insertions(+), 4 deletions(-)

diff --git a/src/color.js b/src/color.js
index c04b78c..82a980c 100644
--- a/src/color.js
+++ b/src/color.js
@@ -1,16 +1,16 @@
 class Dave {
   // Short version of functions bellow.
-  constructor(){
-    this.grid=new Grid();
+  constructor() {
+    this.grid = new Grid();
     this.g = this.grid;
   }
   // alias for fillHsluv
   f(h, s, l) {
-    this.fillHsluv(h,s,l);
+    this.fillHsluv(h, s, l);
   }
   // alias for strokeHsluv
   s(h, s, l) {
-    this.strokeHsluv(h,s,l);
+    this.strokeHsluv(h, s, l);
   }
   // sets fill according to hsluv parameters
   fillHsluv(h, s, l) {
@@ -22,4 +22,23 @@ class Dave {
     let rgb = hsluv.hsluvToRgb([h, s, l]);
     stroke(rgb[0] * 255, rgb[1] * 255, rgb[2] * 255);
   }
+  // Create a fast get function to use instead of in P5.
+  pget(x, y, img) {
+    img.loadPixels();
+    let d = pixelDensity();
+
+    for (var i = 0; i < d; i++) {
+      for (var j = 0; j < d; j++) {
+        // loop over
+        let idx = 4 * ((y * d + j) * img.width * d + (x * d + i));
+        pixels[idx] = r;
+        pixels[idx + 1] = g;
+        pixels[idx + 2] = b;
+        pixels[idx + 3] = a;
+      }
+    }
+    // Things to take into consideration: x,y must be in image.
+    // pixelDensity has to be taken into consideration.
+    // loadPixels should be called only during the first time for this particular image.
+  }
 }