1 files changed, 118 insertions, 0 deletions
diff --git a/public/assets/javascripts/rectangles/engine/map/tools/ortho.js b/public/assets/javascripts/rectangles/engine/map/tools/ortho.js
new file mode 100644
index 0000000..374c822
--- /dev/null
+++ b/public/assets/javascripts/rectangles/engine/map/tools/ortho.js
@@ -0,0 +1,118 @@
+// Tool to make a polyline where all walls are orthogonal
+
+var OrthoPolylineTool = MapTool.extend(function (base) {
+
+  var prev_point, horizontal = false, first_edge_is_horizontal = false
+  
+  var exports = {}
+  exports.down = function(e, cursor){
+    // rightclick?
+    if (e.ctrlKey || e.which === 3) {
+      e.preventDefault()
+      e.stopPropagation()
+      if (map.ui.placing) {
+        // close polyline or cancel
+        map.ui.placing = false
+        if (shapes.workline.points.length > 2) {
+          shapes.workline.build()
+          shapes.add(shapes.workline)
+        }
+        else {
+          shapes.workline.reset()
+        }
+        return
+      }
+      else {
+        map.ui.tools.position.rightclick(e, cursor)
+      }
+      return
+    }
+
+    // compare to initial point
+    var p = last_point.clone()
+    if (map.ui.placing) {
+      if (shapes.workline.lastPoint().eq(p)) {
+        return
+      }
+      else if (shapes.workline.canCloseWith(p)) {
+        shapes.workline.close()
+        shapes.workline.build()
+        shapes.add(shapes.workline)
+        map.ui.placing = false
+      }
+      else {
+        shapes.workline.add(p)
+        prev_point = p
+        horizontal = ! horizontal
+      }
+    }
+    else {
+      map.ui.placing = true
+      shapes.workline = new OrthoPolyline ()
+      shapes.workline.add(p)
+      first_point = prev_point = p
+      horizontal = false
+    }
+  }
+  exports.move = function(e, cursor){
+    last_point.a = cursor.x.a
+    last_point.b = cursor.y.a
+    if (map.ui.placing) {
+      if (shapes.workline.points.length == 1) {
+        var x = abs(prev_point.a - last_point.a)
+        var y = abs(prev_point.b - last_point.b)
+        if (x > y) {
+          last_point.b = prev_point.b
+          first_edge_is_horizontal = horizontal = true
+        }
+        else {
+          last_point.a = prev_point.a
+          first_edge_is_horizontal = horizontal = false
+        }
+      }
+      else {
+        if (horizontal) {
+          last_point.b = prev_point.b
+        }
+        else {
+          last_point.a = prev_point.a
+        }
+        if (horizontal == first_edge_is_horizontal) {
+          // check if this point is within N pixels of the normal
+          // and lock it into place if so
+          if (horizontal && abs( first_point.a - last_point.a ) < 10/map.zoom) {
+            last_point.a = first_point.a
+          }
+          else if (! horizontal && abs( first_point.b - last_point.b ) < 10/map.zoom) {
+            last_point.b = first_point.b
+          }
+        }
+      }
+
+      if (shapes.workline.canCloseWith(last_point)) {
+        document.body.style.cursor = "pointer"
+        last_point.assign(first_point)
+        cursor.x.a = cursor.x.b = last_point.a
+        cursor.y.a = cursor.y.b = last_point.b
+      }
+      return
+    }
+    var end_point = shapes.findClosestEndPoint(last_point)
+    if (end_point) {
+      document.body.style.cursor = "pointer"
+      last_point.assign(end_point.point)
+      cursor.x.a = cursor.x.b = last_point.a
+      cursor.y.a = cursor.y.b = last_point.b
+      return
+    }
+    else {
+      document.body.style.cursor = "crosshair"
+    }
+  }
+  exports.cancel = function(){
+    if (map.ui.placing) { shapes.workline.reset() }
+    first_point = null
+    map.ui.placing = false
+  }
+  return exports
+})
+\ No newline at end of file