From 8344bf53352176880d08fa7a119281b1be0d6134 Mon Sep 17 00:00:00 2001
From: Jules Laplace <jules@okfoc.us>
Date: Mon, 23 May 2016 01:53:32 -0400
Subject: compute height from image aspect, keep some stronger clones

---
 js/ui/evolver.js | 74 ++++++++++++++++++++++++++++++++------------------------
 1 file changed, 42 insertions(+), 32 deletions(-)

diff --git a/js/ui/evolver.js b/js/ui/evolver.js
index 49c2fee..f41ab42 100644
--- a/js/ui/evolver.js
+++ b/js/ui/evolver.js
@@ -1,13 +1,14 @@
 var evolver = (function(){
 
-  setTimeout(init)
+  setTimeout(init, 10)
   
   var opt = {
     src: "img/test/quad.gif",
     w: 30,
-    h: 15,
+    h: 0,
     population: 10,
     strokes: 1,
+    randomize: false,
   }
   if (window.location.hash.length) {
     window.location.hash.replace("#","").split("&").forEach(function(s){
@@ -45,39 +46,17 @@ var evolver = (function(){
   
   function init () {
     nopaint.debug = false
-
-    main_canvas = canvas
-    canvas.resize(opt.w, opt.h)
-//     canvas.forEach(function(lex,x,y){
-//       lex.bg = randint(16)
-//     })
-    for (var i = 0; i < clone_count; i++) {
-      clones[i] = {
-        el: document.createElement("div"),
-        canvas: canvas.clone(),
-        score: 0,
-        hash: -1,
-      }
-//       clones[i].canvas.append(clones[i].el)
-//       clones[i].el.className = "rapper"
-//       document.getElementById("clones").appendChild( clones[i].el )
-      clones[i].canvas.forEach(function(lex){
-        lex.build = noop
-      })
-      controls.fg.update = noop
-      controls.bg.update = noop
-      controls.char.update = noop
-      controls.brush_w.build = noop
-      controls.brush_h.build = noop
-    }
     load(opt.src, go)
   }
   function load(src, fn){
     var img = new Image ()
     img.onload = function(){
       target = drawImage(t_ctx, img)
+      if (opt.h == 0) {
+        opt.h = Math.round(opt.w * 8/15)
+      }
       last_score = 0
-      go()
+      ready()
     }
     if (src.match(/^http/)) {
       src = "http://asdf.us/cgi-bin/proxy?" + src
@@ -88,6 +67,33 @@ var evolver = (function(){
     ctx.drawImage(img, 0, 0, compare_w, compare_h)
     return { width: compare_w, height: compare_h, data: ctx.getImageData(0,0,compare_w,compare_h).data, channels: 4 }
   }
+  function ready () {
+    main_canvas = canvas
+    canvas.resize(opt.w, opt.h)
+    if (opt.randomize) {
+      canvas.forEach(function(lex,x,y){
+        lex.bg = randint(16)
+      })
+    }
+    for (var i = 0; i < clone_count; i++) {
+      clones[i] = {
+        el: document.createElement("div"),
+        canvas: canvas.clone(),
+        score: 0,
+        hash: -1,
+      }
+      clones[i].canvas.forEach(function(lex){
+        lex.build = noop
+      })
+    }
+    controls.fg.update = noop
+    controls.bg.update = noop
+    controls.char.update = noop
+    controls.brush_w.build = noop
+    controls.brush_h.build = noop
+
+    go()
+  }
   function go () {
     if (evolver.paused) return
     step_el.innerHTML = step++
@@ -151,14 +157,18 @@ var evolver = (function(){
     clones.forEach(function(clone, i){
       if (i < clones_to_keep) return
       var clone_to_copy
-      if (i < clones.length / 4) {
-        clone_to_copy = third_best_clone
+      if (i-clones_to_keep > (clones.length-clones_to_keep) * 0.45) {
+        clone_to_copy = best_clone
       }
-      else if (i < clones.length / 2) {
+      else if (i-clones_to_keep > (clones.length-clones_to_keep) * 0.25) {
         clone_to_copy = next_best_clone
       }
+      else if (i-clones_to_keep > (clones.length-clones_to_keep) * 0.1) {
+        clone_to_copy = third_best_clone
+      }
       else {
-        clone_to_copy = best_clone
+        // keep some of the stronger mutants
+        return
       }
       clone.canvas.forEach(function(lex,x,y) {
         lex.assign( clone_to_copy.getCell(x,y) )
-- 
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