mathx

The mathx namespace — 6 functions.

globals/mathx/addScaledVec3

globals/mathx/addScaledVec3(dstBuffer: number, srcBuffer: number, count: number, scale: number) -> boolean

dst[i] += src[i] * scale for count vec3 elements. Both buffers must hold at least count * 3 floats. Useful for particle integration (position += velocity * dt) and accumulator passes.

globals/mathx/dampScalar

globals/mathx/dampScalar(buffer: number, offset: number, count: number, target: number, smoothTime: number, dt: number) -> boolean

Critically-damped exponential approach toward target for count scalars at buffer[offset .. offset+count]. smoothTime is the time constant (~ 0.16 ⇒ ~63% per frame at 60 Hz). Pass smoothTime <= 0 to snap to the target.

globals/mathx/lerpVec3

globals/mathx/lerpVec3(buffer: number, offset: number, count: number, tx: number, ty: number, tz: number, t: number) -> boolean

Element-wise linear blend of count vec3s in buffer[offset .. offset+count*3] toward (tx, ty, tz) by t.

globals/mathx/normalizeQuat

globals/mathx/normalizeQuat(buffer: number, offset: number, count: number) -> boolean

Re-normalise count quaternions in place. Zero-length quats become identity (0, 0, 0, 1) so downstream code never sees NaN.

globals/mathx/slerpQuat

globals/mathx/slerpQuat(buffer: number, offset: number, count: number, tx: number, ty: number, tz: number, tw: number, t: number) -> boolean

Slerp count quaternions (xyzw) at buffer[offset..] toward (tx, ty, tz, tw) by t. Falls back to nlerp+normalize for very-close quats. Always picks the shortest-arc path.

globals/mathx/transformVec3

globals/mathx/transformVec3(buffer: number, offset: number, count: number, mat16: { number }) -> boolean

Treat each vec3 in buffer[offset..] as a position (w = 1), multiply by the 4x4 column-major matrix mat16 (16-element array), write .xyz of the result back. Layout matches glam, wgpu, and GLSL conventions.