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feat: optimize math class size and dependencies
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| import { Box2 } from "./Box2"; | ||
| import { Vector2 } from "./Vector2"; | ||
|
|
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| export function makeBox2FromVector2s(b: Box2, points: Vector2[]): Box2 { | ||
| b.makeEmpty(); | ||
|
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| points.forEach((point) => { | ||
| expandBox2ByVector2(b, point); | ||
| }); | ||
|
|
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| return b; | ||
| } | ||
|
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| export function expandBox2ByVector2(b: Box2, point: Vector2): Box2 { | ||
| b.min.min(point); | ||
| b.max.max(point); | ||
|
|
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| return b; | ||
| } | ||
|
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| export function box2ContainsVector2(b: Box2, point: Vector2): boolean { | ||
| return point.x < b.min.x || point.x > b.max.x || point.y < b.min.y || point.y > b.max.y ? false : true; | ||
| } | ||
|
|
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| export function box2ContainsBox2(b: Box2, otherBox: Box2): boolean { | ||
| return ( | ||
| b.min.x <= otherBox.min.x && otherBox.max.x <= b.max.x && b.min.y <= otherBox.min.y && otherBox.max.y <= b.max.y | ||
| ); | ||
| } | ||
|
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| export function clampVector2ToBox2(b: Box2, point: Vector2): Vector2 { | ||
| return new Vector2().copy(point).clamp(b.min, b.max); | ||
| } | ||
|
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| export function distanceBox2ToVector2(b: Box2, point: Vector2): number { | ||
| const clampedPoint = new Vector2().copy(point).clamp(b.min, b.max); | ||
| return clampedPoint.sub(point).length(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| import { Euler, EulerOrder } from "./Euler"; | ||
| import { clamp } from "./Functions"; | ||
| import { Matrix4 } from "./Matrix4"; | ||
| import { makeMatrix4RotationFromQuaternion } from "./Matrix4.Functions"; | ||
| import { Quaternion } from "./Quaternion"; | ||
|
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| export function makeEulerFromRotationMatrix4(e: Euler, m: Matrix4, order: EulerOrder = EulerOrder.Default): Euler { | ||
| // assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled) | ||
|
|
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| const te = m.elements; | ||
| const m11 = te[0], | ||
| m12 = te[4], | ||
| m13 = te[8]; | ||
| const m21 = te[1], | ||
| m22 = te[5], | ||
| m23 = te[9]; | ||
| const m31 = te[2], | ||
| m32 = te[6], | ||
| m33 = te[10]; | ||
|
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| let x = 0, | ||
| y = 0, | ||
| z = 0; | ||
|
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| switch (order) { | ||
| case EulerOrder.XYZ: | ||
| y = Math.asin(clamp(m13, -1, 1)); | ||
|
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| if (Math.abs(m13) < 0.9999999) { | ||
| x = Math.atan2(-m23, m33); | ||
| z = Math.atan2(-m12, m11); | ||
| } else { | ||
| x = Math.atan2(m32, m22); | ||
| z = 0; | ||
| } | ||
|
|
||
| break; | ||
|
|
||
| case EulerOrder.YXZ: | ||
| x = Math.asin(-clamp(m23, -1, 1)); | ||
|
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| if (Math.abs(m23) < 0.9999999) { | ||
| y = Math.atan2(m13, m33); | ||
| z = Math.atan2(m21, m22); | ||
| } else { | ||
| y = Math.atan2(-m31, m11); | ||
| z = 0; | ||
| } | ||
|
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| break; | ||
|
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||
| case EulerOrder.ZXY: | ||
| x = Math.asin(clamp(m32, -1, 1)); | ||
|
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| if (Math.abs(m32) < 0.9999999) { | ||
| y = Math.atan2(-m31, m33); | ||
| z = Math.atan2(-m12, m22); | ||
| } else { | ||
| y = 0; | ||
| z = Math.atan2(m21, m11); | ||
| } | ||
|
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| break; | ||
|
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| case EulerOrder.ZYX: | ||
| y = Math.asin(-clamp(m31, -1, 1)); | ||
|
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| if (Math.abs(m31) < 0.9999999) { | ||
| x = Math.atan2(m32, m33); | ||
| z = Math.atan2(m21, m11); | ||
| } else { | ||
| x = 0; | ||
| z = Math.atan2(-m12, m22); | ||
| } | ||
|
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||
| break; | ||
|
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| case EulerOrder.YZX: | ||
| z = Math.asin(clamp(m21, -1, 1)); | ||
|
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| if (Math.abs(m21) < 0.9999999) { | ||
| x = Math.atan2(-m23, m22); | ||
| y = Math.atan2(-m31, m11); | ||
| } else { | ||
| x = 0; | ||
| y = Math.atan2(m13, m33); | ||
| } | ||
|
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| break; | ||
|
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||
| case EulerOrder.XZY: | ||
| z = Math.asin(-clamp(m12, -1, 1)); | ||
|
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| if (Math.abs(m12) < 0.9999999) { | ||
| x = Math.atan2(m32, m22); | ||
| y = Math.atan2(m13, m11); | ||
| } else { | ||
| x = Math.atan2(-m23, m33); | ||
| y = 0; | ||
| } | ||
|
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| break; | ||
| } | ||
|
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| return e.set(x, y, z, order); | ||
| } | ||
|
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| export function makeEulerFromQuaternion(e: Euler, q: Quaternion, order: EulerOrder): Euler { | ||
| const m = makeMatrix4RotationFromQuaternion(new Matrix4(), q); | ||
|
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| return makeEulerFromRotationMatrix4(e, m, order); | ||
| } |
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