Module dlib.math.transformation
Matrix-based geometric transformations
Functions
Name | Description |
---|---|
affineTransform2D(v, m)
|
Affine transformations in 2D space |
axisReflectionMatrix(n)
|
Setup the matrix to perform a reflection about an arbitrary plane through the origin. The unit vector n is perpendicular to the plane. |
directionToMatrix(zdir)
|
Setup an orientation matrix using forward direction vector |
forward(m)
|
Forward vector of the matrix |
fromEuler(v)
|
Setup a rotation matrix, given Euler angles in radians |
frustumMatrix(l, r, b, t, n, f)
|
Setup a frustum matrix given the left, right, bottom, top, near, and far values for the frustum boundaries. |
homothetyMatrix(point, scale)
|
Create a matrix to perform uniform scale with respect to a point |
homothetyMatrix2D(point, scale)
|
Homothety (scale with respect to a point) in 2D space |
lookAtMatrix(eye, center, up)
|
Setup the matrix to perform a "Look At" transformation like a first person camera |
orthoMatrix(l, r, b, t, n, f)
|
Setup an orthographic Matrix4x4 given the left, right, bottom, top, near, and far values for the frustum boundaries. |
orthoNormalMatrix(xdir, ydir, zdir)
|
Setup an orientation matrix using 3 basis normalized vectors |
perspectiveMatrix(fovY, aspect, n, f)
|
Setup a perspective matrix given the field-of-view in the Y direction in degrees, the aspect ratio of Y/X, and near and far plane distances |
projectionMatrix(n)
|
Setup the matrix to perform a projection onto a plane passing through the origin. The plane is perpendicular to the unit vector n. |
reflectionMatrix(reflectionAxis, k)
|
Setup the matrix to perform a reflection about a plane parallel to a cardinal plane. |
right(m)
|
Right vector of the matrix |
rotationBetweenVectors(source, target)
|
Setup an orientation matrix that performs rotation between two vectors |
rotationMatrix(rotaxis, theta)
|
Create a matrix to perform a rotation about a world axis (theta in radians) |
rotationMatrix2D(theta)
|
Rotation in 2D space |
scaleAlongAxisMatrix(scaleAxis, k)
|
Setup the matrix to perform scale along an arbitrary axis |
scaleMatrix(v)
|
Create a matrix to perform scale on each axis |
scaleMatrix2D(s)
|
Scale in 2D space |
scaling(m)
|
Scaling vector of the matrix |
shadowMatrix(groundplane, lightpos)
|
Setup a matrix that flattens geometry into a plane, as if it were casting a shadow from a light |
shearMatrix(shearAxis, s, t)
|
Setup the matrix to perform a shear |
toEuler(m)
|
Setup the Euler angles in radians, given a rotation matrix |
translation(m)
|
Translation vector of the matrix |
translationMatrix(v)
|
Create a translation matrix given a translation vector |
translationMatrix2D(t)
|
Translation in 2D space |
up(m)
|
Up vector of the matrix |