Add normalized geometry functions

haxenme · Feb 29, 2024 · db9fbbd · db9fbbd
1 parent fc96564
commit db9fbbd
Show file tree

Hide file tree

Showing 3 changed files with 47 additions and 2 deletions.
diff --git a/src/nme/Assets.hx b/src/nme/Assets.hx
@@ -489,6 +489,7 @@ class Assets
             i.isResource ?  new Font("",null,null,i.path,id) :  new Font(i.path,null,null,null,id);
          #end
 
+trace('$id -> $font');
       trySetCache(i,useCache,font);
 
       return font;

diff --git a/src/nme/geom/Point.hx b/src/nme/geom/Point.hx
@@ -78,15 +78,38 @@ class Point
       if (x == 0 && y == 0) 
       {
          return;
-
-      } else 
+      }
+      else 
       {
          var norm = thickness / Math.sqrt(x * x + y * y);
          x *= norm;
          y *= norm;
       }
    }
 
+   inline public function dot(inPoint:Point):Float
+   {
+     return x*inPoint.x + y*inPoint.y;
+   }
+
+   inline public function normalized(inplace=false):Point
+   {
+      var result = this;
+      var len = x*x+y*y;
+      var scale  =  Math.abs(len)>1e-7 ? 1.0/len : 0.0;
+      if (inplace)
+      {
+         x *= scale;
+         y *= scale;
+      }
+      else 
+      {
+         result = new Point(x*scale, y*scale);
+      }
+      return result;
+   }
+
+
    public function offset(dx:Float, dy:Float):Void 
    {
       x += dx;

diff --git a/src/nme/geom/Vector3D.hx b/src/nme/geom/Vector3D.hx
@@ -126,6 +126,27 @@ class Vector3D
       return l;
    }
 
+   inline public function normalized(inplace=false):Vector3D 
+   {
+      var l = length;
+      var invL = l==0 ? 1 : 1.0/l;
+      var result = this;
+      if (inplace)
+      {
+         x *= invL;
+         y *= invL;
+         z *= invL;
+      }
+      else
+      {
+         result = new Vector3D(x*invL, y*invL, z*invL);
+      }
+
+      return result;
+   }
+
+
+
    inline public function project():Vector3D
    {
       x /= w;