class PF2d::Transform

• PF2d::Transform
• Reference
• Object

Defined in:

pf2d/transform.cr

Constructors

• .new(matrix : PF2d::Mat3x3(Float64))
• .new

Class Method Summary

• .identity
• .invert(matrix : Mat3x3)

  Return a new inverted version of the given matrix

• .planar_perspective(src : Quad, dst : Quad)

  https://docs.opencv.org/4.x/d9/dab/tutorial_homography.html

• .rotation(angle : Number)

  Returns a matrix representing a 2d rotation

• .scale(x : Number, y : Number)

  Returns a matrix representing a 2d scaling

• .shear(x : Number, y : Number)

  Returns a matrix representing a 2d shear

• .translation(x : Number, y : Number)

  Returns a matrix representing a 2d translation

Instance Method Summary

• #apply(x : Number, y : Number)
• #apply(point : PF2d::Vec)
• #apply(points : Enumerable(PF2d::Vec))
• #apply(points : Enumerable(PF2d::Vec), &)
• #bounding_box(x : Number, y : Number)

  Return the boudning box of the current transformation matrix

• #distort(src : Quad, dst : Quad)
• #invert

  Invert the transformation

• #matrix : Mat3x3(Float64)
• #matrix=(matrix : Mat3x3(Float64))
• #reset

  Reset the transformation to the identity matrix

• #rotate(angle : Number)

  Rotate by angle (in radians)

• #scale(x : Number, y : Number)

  Scale by x and y

• #scale(point : PF2d::Vec)

  ditto

• #scale(n : Number)

  Scale both x and y by n

• #shear(x : Number, y : Number)

  Shear by x and y

• #shear(point : PF2d::Vec)

  ditto

• #translate(x : Number, y : Number)

  Translate by x and y

• #translate(point : PF2d::Vec)

  ditto

Constructor Detail

Class Method Detail

Instance Method Detail