npm install mat4-decompose
Decomposes a 3D matrix, useful for animations. Code ported from W3 CSS Spec. PRs for more tests/robustness/optimizations welcome.
Order:
- first isolates perspective
- then determines translation
- then determines X scale, XY shear, Y scale, XZ and YZ shear, and Z scale
- then determines quaternion rotation
You may also be interested in mat4-interpolate, mat4-recompose, and css-mat4.
#### valid = decompose(matrix[, translation, scale, skew, perspective, quaternion])
Decomposes the given matrix (an array of 16 floats, like those gl-matrix operates on), storing the results into the specified optional vectors.
- translation [x, y, z]
- scale [x, y, z]
- skew [xy, xz, yz] skew factors
- perspective [x, y, z, w]
- quaternion [x, y, z, w]
Returns false is this matrix cannot be decomposed, true otherwise.
MIT, see LICENSE.md for details.