Moving path tools into Generator()

2018-05-10 09:56:55 +12:00
parent d4e197f08e
commit b24475662a
3 changed files with 82 additions and 5 deletions
--- a/desktop/sources/scripts/generator.js
+++ b/desktop/sources/scripts/generator.js
@@ -0,0 +1,75 @@
+function Generator(layer)
+{
+  this.layer = layer;
+
+  function operate(layer,offset,scale)
+  {
+    var l = copy(layer)
+
+    for(k1 in l){
+      var seg = l[k1];
+      for(k2 in seg.vertices){
+        seg.vertices[k2].x += offset.x
+        seg.vertices[k2].x *= scale
+        seg.vertices[k2].y += offset.y
+        seg.vertices[k2].y *= scale
+      }
+    }
+
+    return l;
+  }
+
+  function render(segment)
+  {
+    var type = segment.type;
+    var vertices = segment.vertices;
+    var html = '';
+    var skip = 0;
+
+    for(id in vertices){
+      if(skip > 0){ skip -= 1; continue; }
+      
+      var vertex = vertices[id]
+      var next = vertices[parseInt(id)+1]
+      var after_next = vertices[parseInt(id)+2]
+
+      if(id == 0){
+        html += `M${vertex.x},${vertex.y} `
+      }
+      else if(type == "line"){ 
+        html += `L${vertex.x},${vertex.y} `;  
+      }
+      else if(type == "arc_c"){ 
+        html += next ? `A${next.x - vertex.x},${next.y - vertex.y} 0 0,1 ${next.x},${next.y} ` : ''; 
+      }
+      else if(type == "arc_r"){ 
+        html += next ? `A${next.x - vertex.x},${next.y - vertex.y} 0 0,0 ${next.x},${next.y} ` : ''; 
+      }
+      else if(type == "bezier"){ 
+        html += next && after_next ?`Q${next.x},${next.y} ${after_next.x},${after_next.y} ` : ''; 
+        skip = 1
+      }
+      else{ 
+        console.warn(`unknown type:${type}`)
+      }
+    }
+  
+    return html
+  }
+
+  this.toString = function(offset = {x:0,y:0}, scale = 1)
+  {
+    var s = ""
+
+    var layer = operate(this.layer,offset,scale)
+
+    for(id in layer){
+      var seg = layer[id];
+      s += `${render(seg)}`
+    }
+
+    return s.trim()
+  }
+
+  function copy(data){ return data ? JSON.parse(JSON.stringify(data)) : []; }
+}