Class: Transform

Source Location: /painter.php

Class Transform

Class Overview

Encapsulates transformations for Polygon objects.

Located in /painter.php [line 498]

Method Summary

Transform	Transform()	Creates a new Transform object.
void	Clear()	Restores the transformation matrix to the identity matrix.
void	CustomTransform()	Adds a custom transformation.
void	Rotate()	Adds a rotation operation.
void	Scale()	Adds a scaling operation.
void	Sheer()	Adds a sheering operation.
Polygon	Trans()	Performs the stored transformation on $poly. $cx = $y = -1 will set the centre of the Polygon as origin.
void	Translate()	Adds a translation operation.

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Methods

Constructor Transform [line 508]

Transform Transform(
)

Creates a new Transform object.

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Clear [line 516]

void Clear(
)

Restores the transformation matrix to the identity matrix.

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CustomTransform [line 595]

void CustomTransform(
array
$trans 
)

Adds a custom transformation.

Parameters:

array

$trans:

A 3x3 transformation matrix to include.

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Rotate [line 544]

void Rotate(
number
$theta 
)

Adds a rotation operation.

Parameters:

number

$theta:

The angle of rotation.

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Scale [line 579]

void Scale(
[number
$x = 1], [number
$y = 1] 
)

Adds a scaling operation.

Parameters:

number	$x:	The value to scale in along the X axis.
number	$y:	The value to scale in along the Y axis.

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Sheer [line 562]

void Sheer(
[number
$x = 0], [number
$y = 0] 
)

Adds a sheering operation.

Parameters:

number	$x:	The sheering value along the X axis.
number	$y:	The sheering value along the Y axis.

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Trans [line 615]

Polygon Trans(
Polygon
$poly, [int
$cx = -1], [int
$cy = -1] 
)

Performs the stored transformation on $poly. $cx = $y = -1 will set the centre of the Polygon as origin.

Parameters:

Polygon	$poly:	The Polygon to transform.
int	$cx:	The X co-ordinate to act as origin.
int	$cy:	The Y co-ordinate to act as origin.

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Translate [line 528]

void Translate(
number
$x, number
$y 
)

Adds a translation operation.

Parameters:

number	$x:	Translation along X axis.
number	$y:	Translation along Y axis.

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Documentation generated on Mon, 31 Mar 2008 18:35:26 +0100 by phpDocumentor 1.4.1

	Painter

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