struct CP::Transform

• CP::Transform
• Struct
• Value
• Object

Overview

Column major 2x3 affine transform.

Defined in:

chipmunk/vector.cr

Constant Summary

IDENTITY = new

Identity transform matrix.

Constructors

• .axial_scale(axis : Vect, pivot : Vect, scale : Number) : self
• .bone_scale(v0 : Vect, v1 : Vect) : self
• .new(a : Number = 1, b : Number = 0, c : Number = 0, d : Number = 1, tx : Number = 0, ty : Number = 0)

  Construct a new transform matrix.

• .new_transpose(a : Number, c : Number, tx : Number, b : Number, d : Number, ty : Number) : self

  Construct a new transform matrix in transposed order.

• .ortho(bb : BB) : self
• .rigid(translate : Vect, radians : Number) : Transform

  Create a rigid transformation matrix.

• .rigid_inverse : Transform

  Fast inverse of a rigid transformation matrix.

• .rotate(radians : Number) : self

  Create a rotation matrix.

• .scale(scale_x : Number, scale_y : Number) : self

  Create a scale matrix.

• .translate(translate : Vect) : self

  Create a translation matrix.

Instance Method Summary

• #*(t2 : Transform) : Transform

  Multiply two transformation matrices.

• #a : Float64
• #a=(a : Float64)
• #b : Float64
• #b=(b : Float64)
• #c : Float64
• #c=(c : Float64)
• #d : Float64
• #d=(d : Float64)
• #inverse : Transform

  Get the inverse of a transform matrix.

• #transform(bb : BB) : BB

  Transform a BB.

• #transform_point(p : Vect) : Vect

  Transform an absolute point.

• #transform_vect(v : Vect) : Vect

  Transform a vector (i.e.

• #tx : Float64
• #tx=(tx : Float64)
• #ty : Float64
• #ty=(ty : Float64)
• #wrap(inner : Transform) : Transform
• #wrap_inverse(inner : Transform) : Transform

Constructor Detail

Instance Method Detail