added ruler support in surface view

JiaxinYu · May 20, 2016 · b0e47f0 · b0e47f0
1 parent 43f4679
commit b0e47f0
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diff --git a/src/js/utilities/math-utils.js b/src/js/utilities/math-utils.js
@@ -37,12 +37,43 @@ papaya.utilities.MathUtils.lineDistance = function (point1x, point1y, point2x, p
 };
 
 
+
+papaya.utilities.MathUtils.lineDistance3d = function (point1x, point1y, point1z, point2x, point2y, point2z) {
+    var xs, ys, zs;
+
+    xs = point2x - point1x;
+    xs = xs * xs;
+
+    ys = point2y - point1y;
+    ys = ys * ys;
+
+    zs = point2z - point1z;
+    zs = zs * zs;
+
+    return Math.sqrt(xs + ys + zs);
+};
+
+
+
 papaya.utilities.MathUtils.essentiallyEqual = function (a, b) {
     return (a === b) || (Math.abs(a - b) <= ((Math.abs(a) > Math.abs(b) ? Math.abs(b) : Math.abs(a)) *
         papaya.utilities.MathUtils.EPSILON));
 };
 
 
+
+papaya.utilities.MathUtils.getPowerOfTwo = function (value, pow) {
+    var pow = pow || 1;
+
+    while (pow < value) {
+        pow *= 2;
+    }
+
+    return pow;
+};
+
+
+
 function papayaRoundFast(val) {
     /*jslint bitwise: true */
     return (0.5 + val) | 0;