added more vec2/3/4 methods

src/mol-math/linear-algebra/3d/vec2.ts

@@ -93,6 +93,33 @@ namespace Vec2 {
         return out;
     }
 
+    /**
+     * Math.round the components of a Vec2
+     */
+    export function round(out: Vec2, a: Vec2) {
+        out[0] = Math.round(a[0]);
+        out[1] = Math.round(a[1]);
+        return out;
+    }
+
+    /**
+     * Math.ceil the components of a Vec2
+     */
+    export function ceil(out: Vec2, a: Vec2) {
+        out[0] = Math.ceil(a[0]);
+        out[1] = Math.ceil(a[1]);
+        return out;
+    }
+
+    /**
+     * Math.floor the components of a Vec2
+     */
+    export function floor(out: Vec2, a: Vec2) {
+        out[0] = Math.floor(a[0]);
+        out[1] = Math.floor(a[1]);
+        return out;
+    }
+
     export function distance(a: Vec2, b: Vec2) {
         const x = b[0] - a[0],
             y = b[1] - a[1];
@@ -116,6 +143,15 @@ namespace Vec2 {
             y = a[1];
         return x * x + y * y;
     }
+
+    /**
+     * Returns the inverse of the components of a Vec2
+     */
+    export function inverse(out: Vec2, a: Vec2) {
+        out[0] = 1.0 / a[0];
+        out[1] = 1.0 / a[1];
+        return out;
+    }
 }
 
 export default Vec2
\ No newline at end of file

src/mol-math/linear-algebra/3d/vec3.ts

@@ -130,6 +130,36 @@ namespace Vec3 {
         return out;
     }
 
+    /**
+     * Math.round the components of a Vec3
+     */
+    export function round(out: Vec3, a: Vec3) {
+        out[0] = Math.round(a[0]);
+        out[1] = Math.round(a[1]);
+        out[2] = Math.round(a[2]);
+        return out;
+    }
+
+    /**
+     * Math.ceil the components of a Vec3
+     */
+    export function ceil(out: Vec3, a: Vec3) {
+        out[0] = Math.ceil(a[0]);
+        out[1] = Math.ceil(a[1]);
+        out[2] = Math.ceil(a[2]);
+        return out;
+    }
+
+    /**
+     * Math.floor the components of a Vec3
+     */
+    export function floor(out: Vec3, a: Vec3) {
+        out[0] = Math.floor(a[0]);
+        out[1] = Math.floor(a[1]);
+        out[2] = Math.floor(a[2]);
+        return out;
+    }
+
     export function distance(a: Vec3, b: Vec3) {
         const x = b[0] - a[0],
             y = b[1] - a[1],
@@ -162,6 +192,16 @@ namespace Vec3 {
         return Vec3.scale(out, Vec3.normalize(out, a), l)
     }
 
+    /**
+     * Returns the inverse of the components of a Vec3
+     */
+    export function inverse(out: Vec3, a: Vec3) {
+        out[0] = 1.0 / a[0];
+        out[1] = 1.0 / a[1];
+        out[2] = 1.0 / a[2];
+        return out;
+    }
+
     export function normalize(out: Vec3, a: Vec3) {
         const x = a[0],
             y = a[1],

src/mol-math/linear-algebra/3d/vec4.ts

@@ -108,6 +108,47 @@ namespace Vec4 {
         return Math.sqrt(x * x + y * y + z * z + w * w);
     }
 
+    export function scale(out: Vec4, a: Vec4, b: number) {
+        out[0] = a[0] * b;
+        out[1] = a[1] * b;
+        out[2] = a[2] * b;
+        out[4] = a[4] * b;
+        return out;
+    }
+
+    /**
+     * Math.round the components of a Vec4
+     */
+    export function round(out: Vec4, a: Vec4) {
+        out[0] = Math.round(a[0]);
+        out[1] = Math.round(a[1]);
+        out[2] = Math.round(a[2]);
+        out[3] = Math.round(a[3]);
+        return out;
+    }
+
+    /**
+     * Math.ceil the components of a Vec4
+     */
+    export function ceil(out: Vec4, a: Vec4) {
+        out[0] = Math.ceil(a[0]);
+        out[1] = Math.ceil(a[1]);
+        out[2] = Math.ceil(a[2]);
+        out[3] = Math.ceil(a[3]);
+        return out;
+    }
+
+    /**
+     * Math.floor the components of a Vec3
+     */
+    export function floor(out: Vec4, a: Vec4) {
+        out[0] = Math.floor(a[0]);
+        out[1] = Math.floor(a[1]);
+        out[2] = Math.floor(a[2]);
+        out[3] = Math.floor(a[3]);
+        return out;
+    }
+
     export function squaredDistance(a: Vec4, b: Vec4) {
         const x = b[0] - a[0],
             y = b[1] - a[1],
@@ -144,6 +185,17 @@ namespace Vec4 {
     export function dot(a: Vec4, b: Vec4) {
         return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
     }
+
+    /**
+     * Returns the inverse of the components of a Vec4
+     */
+    export function inverse(out: Vec4, a: Vec4) {
+        out[0] = 1.0 / a[0];
+        out[1] = 1.0 / a[1];
+        out[2] = 1.0 / a[2];
+        out[3] = 1.0 / a[3];
+        return out;
+    }
 }
 
 export default Vec4
\ No newline at end of file