Contents

Py5Shape.apply_matrix()

Apply a transformation matrix to a Py5Shape object.

Examples

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def setup():
    global s
    s = py5.create_shape(py5.RECT, -40, -40, 80, 80)


def draw():
    py5.background(255)
    if py5.is_mouse_pressed:
        s.apply_matrix(0.99, 0, 0, 0, 0.99, 0)
    else:
        s.reset_matrix()
    py5.shape(s, py5.width / 2, py5.height / 2)

Description

Apply a transformation matrix to a Py5Shape object. This can be used to scale, rotate, and translate a shape with one call.

Making productive use of this method requires some knowledge of 2D or 3D transformation matrices, and perhaps some knowledge of Processing’s source code.

Transformations are cummulative and therefore will be applied on top of existing transformations. Use Py5Shape.reset_matrix() to set the transformation matrix to the identity matrix.

Underlying Java method: PShape.applyMatrix

Syntax

apply_matrix(n00: float, n01: float, n02: float, n03: float, n10: float, n11: float, n12: float, n13: float, n20: float, n21: float, n22: float, n23: float, n30: float, n31: float, n32: float, n33: float, /) -> None
apply_matrix(n00: float, n01: float, n02: float, n10: float, n11: float, n12: float, /) -> None
apply_matrix(source: NDArray[(2, 3), Float], /) -> None
apply_matrix(source: NDArray[(4, 4), Float], /) -> None

Parameters

  • n00: float - numbers which define the 4x4 matrix to be multiplied

  • n01: float - numbers which define the 4x4 matrix to be multiplied

  • n02: float - numbers which define the 4x4 matrix to be multiplied

  • n03: float - numbers which define the 4x4 matrix to be multiplied

  • n10: float - numbers which define the 4x4 matrix to be multiplied

  • n11: float - numbers which define the 4x4 matrix to be multiplied

  • n12: float - numbers which define the 4x4 matrix to be multiplied

  • n13: float - numbers which define the 4x4 matrix to be multiplied

  • n20: float - numbers which define the 4x4 matrix to be multiplied

  • n21: float - numbers which define the 4x4 matrix to be multiplied

  • n22: float - numbers which define the 4x4 matrix to be multiplied

  • n23: float - numbers which define the 4x4 matrix to be multiplied

  • n30: float - numbers which define the 4x4 matrix to be multiplied

  • n31: float - numbers which define the 4x4 matrix to be multiplied

  • n32: float - numbers which define the 4x4 matrix to be multiplied

  • n33: float - numbers which define the 4x4 matrix to be multiplied

  • source: NDArray[(2, 3), Float] - 2D transformation matrix

  • source: NDArray[(4, 4), Float] - 3D transformation matrix

Updated on September 11, 2021 16:51:34pm UTC