Rename ol.render to ol.geom.flat

2013-11-12 12:11:25 +01:00
parent e44dfb1c6c
commit 16994f1774
3 changed files with 12 additions and 12 deletions
@@ -0,0 +1,49 @@
+goog.provide('ol.geom.flat');
+
+goog.require('goog.vec.Mat4');
+goog.require('ol.geom.Geometry');
+
+
+/**
+ * @param {Array.<number>} flatCoordinates Flat coordinates.
+ * @param {number} stride Stride.
+ * @param {goog.vec.Mat4.AnyType} transform Transform.
+ * @param {Array.<number>=} opt_dest Destination.
+ * @return {Array.<number>} Transformed coordinates.
+ */
+ol.geom.flat.transform2D =
+    function(flatCoordinates, stride, transform, opt_dest) {
+  var m00 = goog.vec.Mat4.getElement(transform, 0, 0);
+  var m10 = goog.vec.Mat4.getElement(transform, 1, 0);
+  var m01 = goog.vec.Mat4.getElement(transform, 0, 1);
+  var m11 = goog.vec.Mat4.getElement(transform, 1, 1);
+  var m03 = goog.vec.Mat4.getElement(transform, 0, 3);
+  var m13 = goog.vec.Mat4.getElement(transform, 1, 3);
+  var dest = goog.isDef(opt_dest) ? opt_dest : [];
+  var i = 0;
+  var j, jj;
+  for (j = 0, jj = flatCoordinates.length; j < jj; j += stride) {
+    var x = flatCoordinates[j];
+    var y = flatCoordinates[j + 1];
+    dest[i++] = m00 * x + m01 * y + m03;
+    dest[i++] = m10 * x + m11 * y + m13;
+  }
+  if (goog.isDef(opt_dest) && dest.length != i) {
+    dest.length = i;
+  }
+  return dest;
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @param {goog.vec.Mat4.AnyType} transform Transform.
+ * @param {Array.<number>=} opt_dest Destination.
+ * @return {Array.<number>} Transformed flat coordinates.
+ */
+ol.geom.flat.transformGeometry2D = function(geometry, transform, opt_dest) {
+  var flatCoordinates = geometry.getFlatCoordinates();
+  var stride = geometry.getStride();
+  return ol.geom.flat.transform2D(
+      flatCoordinates, stride, transform, opt_dest);
+};