Adding vec2 files.

Author: photonstorm

v3/src/checksum.js

@@ -1,4 +1,4 @@
 var CHECKSUM = {
-build: 'e747b3d0-ea2e-11e6-a87a-db0518e1e1bd'
+build: '618b02c0-e81b-11e6-ac0a-578aa8c24501'
 };
 module.exports = CHECKSUM;

v3/src/math/vector/vec2/Abs.js

@@ -0,0 +1,10 @@
+let vec2 = Float32Array;
+
+export default function (a, dst = new vec2(2)) {
+
+    dst[0] = Math.abs(a[0]);
+    dst[1] = Math.abs(a[1]);
+
+    return dst;
+
+}

v3/src/math/vector/vec2/Add.js

@@ -0,0 +1,10 @@
+let vec2 = Float32Array;
+
+export default function (a, b, dst = new vec2(2)) {
+
+    dst[0] = a[0] + b[0];
+    dst[1] = a[1] + b[1];
+
+    return dst;
+
+}

v3/src/math/vector/vec2/Add3.js

@@ -0,0 +1,10 @@
+let vec2 = Float32Array;
+
+export default function (a, b, c, dst = new vec2(2)) {
+
+    dst[0] = a[0] + b[0] + c[0];
+    dst[1] = a[1] + b[1] + c[1];
+
+    return dst;
+
+}

v3/src/math/vector/vec2/Add4.js

@@ -0,0 +1,10 @@
+let vec2 = Float32Array;
+
+export default function (a, b, c, d, dst = new vec2(2)) {
+
+    dst[0] = a[0] + b[0] + c[0] + d[0];
+    dst[1] = a[1] + b[1] + c[1] + d[1];
+
+    return dst;
+
+}

v3/src/math/vector/vec2/Angle.js

@@ -0,0 +1,13 @@
+import Clamp from 'math/Clamp.js';
+
+//  Get the angle in radians between the two given vectors
+
+export default function (a, b) {
+
+    const dot = a[0] * b[0] + a[1] * b[1];
+    const len = Math.sqrt(a[0] * a[0] + a[1] * a[1]);
+    const lenV = Math.sqrt(b[0] * b[0] + b[1] * b[1]);
+
+    return Math.acos(Clamp(dot / (len * lenV), -1, 1));
+
+}

v3/src/math/vector/vec2/Build.js

@@ -0,0 +1,10 @@
+let vec2 = Float32Array;
+
+export default function (x, y, dst = new vec2(2)) {
+
+    dst[0] = x;
+    dst[1] = y;
+
+    return dst;
+
+}

v3/src/math/vector/vec2/BuildOne.js

@@ -0,0 +1,10 @@
+let vec2 = Float32Array;
+
+export default function (dst = new vec2(2)) {
+
+    dst[0] = 1;
+    dst[1] = 1;
+
+    return dst;
+
+}

v3/src/math/vector/vec2/BuildXAxis.js

@@ -0,0 +1,10 @@
+let vec2 = Float32Array;
+
+export default function (dst = new vec2(2)) {
+
+    dst[0] = 1;
+    dst[1] = 0;
+
+    return dst;
+
+}

v3/src/math/vector/vec2/BuildYAxis.js

@@ -0,0 +1,10 @@
+let vec2 = Float32Array;
+
+export default function (dst = new vec2(2)) {
+
+    dst[0] = 0;
+    dst[1] = 1;
+
+    return dst;
+
+}