find closest segment

1 files changed, 46 insertions, 0 deletions

diff --git a/public/assets/javascripts/rectangles/engine/map/tools/arrow.js b/public/assets/javascripts/rectangles/engine/map/tools/arrow.js
new file mode 100644
index 0000000..2a73954
--- /dev/null
+++ b/public/assets/javascripts/rectangles/engine/map/tools/arrow.js
@@ -0,0 +1,46 @@
+var ArrowTool = MapTool.extend(function(base){
+	var exports = {}
+	
+	var selected_point = null, original_point = null, selected_shape = null
+	
+	exports.down = function(e, cursor){
+    last_point.a = cursor.x.a
+    last_point.b = cursor.y.a
+    var p = shapes.findClosestPoint(last_point)
+    if (p) {
+      selected_shape = p.shape
+      selected_point = p.point
+      original_point = selected_point.clone()
+    }
+    else {
+      map.ui.set_drag_tool("position")
+    }
+	}
+	
+  exports.move = function(e, cursor){
+    last_point.a = cursor.x.a
+    last_point.b = cursor.y.a
+    var p = shapes.findClosestPoint(last_point)
+    if (p) {
+      document.body.style.cursor = "pointer"
+      last_point.assign(p.point)
+      cursor.x.a = cursor.x.b = last_point.a
+      cursor.y.a = cursor.y.b = last_point.b
+    }
+    else {
+      document.body.style.cursor = "crosshair"
+    }
+	}
+	
+	exports.drag = function(e, cursor){
+    selected_point.a = original_point.a + cursor.x.magnitude()
+		selected_point.b = original_point.b + cursor.y.magnitude()
+		selected_shape.rebuild()
+	}
+	
+	exports.up = function(e, cursor){
+	  selected_point = selected_shape = original_point = null
+	}
+	
+	return exports
+})
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