PDFTron WebViewer

Class: TransformationBuilder

CoreControls.Math. TransformationBuilder

A utility class to help create transformations.

new TransformationBuilder(Rows, Columns)

A builder class to help facilitate creating transformation matrices.
Parameters:
Name Type Description
Rows number the number of rows
Columns number the number of columns
Properties:
Name Type Description
Rows number the number of rows
Columns number the number of columns

Methods

clear()

Clears the list of all transformations.
Returns:
The tranformation matrix
Type
CoreControls.Math.Matrix

getAt(index)

Gets the transformation at a particular index.
Parameters:
Name Type Description
index number A valid index
Returns:
A transformation matrix
Type
CoreControls.Math.Matrix

getFinalTransform()

Gets the final transformation by multiplying the matrices in the list.
Returns:
The tranformation matrix
Type
CoreControls.Math.Matrix

push(transform)

Pushes a transformation matrix into the list.
Parameters:
Name Type Description
transform CoreControls.Math.Matrix The transformation matrix
Returns:
This instance
Type
CoreControls.Math.TransformationBuilder

scale(x, y)

Creates a scale transform and adds it to the list.
Parameters:
Name Type Description
x number The amount to scale by horizontally
y number The amount to scale by vertically
Returns:
This instance
Type
CoreControls.Math.TransformationBuilder

setAt(index, transform)

Sets the transformation matrix at a particular index.
Parameters:
Name Type Description
index number A valid index
transform CoreControls.Math.Matrix A transformation matrix
Returns:
This instance
Type
CoreControls.Math.TransformationBuilder

skew(x, y)

Creates a scale transform and adds it to the list.
Parameters:
Name Type Description
x number The amount to scale by horizontally
y number The amount to scale by vertically
Returns:
This instance
Type
CoreControls.Math.TransformationBuilder

skew(angle [, inRadians])

Creates a rotation transform and adds it to the list.
Parameters:
Name Type Argument Default Description
angle number The amount to rotate by
inRadians boolean <optional>
 false Whether the amount is in radians. Default: false
Returns:
This instance
Type
CoreControls.Math.TransformationBuilder

translate(x, y)

Creates a translation transform and adds it to the list.
Parameters:
Name Type Description
x number The amount to translate by horizontally
y number The amount to translate by vertically
Returns:
This instance
Type
CoreControls.Math.TransformationBuilder

translateTo(sx, sy, dx, dy)

Creates a translation transform from a source to a destination and adds it to the list.
Parameters:
Name Type Description
sx number The source X value
sy number The source Y value
dx number The destination X value
dy number The destination Y value
Returns:
This instance
Type
CoreControls.Math.TransformationBuilder