Class Transform

Known Subclasses:

Class that defines the orientation of planes.

Attention:

There is a difference between performing rotation first followed by translation, and performing translation first followed by rotation.
VTK's coordinate system and translation is NOT 100% precise. Consequently, performing maximum rotation and translation can potentially yield incorrect results. For instance, rotating a XY plane along the x-axis 90 degrees may NOT produce any results (as it is possible that the XY plane has just fallen outside the visible range). Therefore, rotating the XY plane 89.9 degrees instead, should be a better option in order to produce the correct results.

Instance Methods

[hide private]

__init__(self)
Initialise the transform object.

vtkTransform

_getTransform(self)
Return the transform instance.

rotateX(self, angle)
Rotate the plane along the x-axis.

rotateY(self, angle)
Rotate the plane along the y-axis.

rotateZ(self, angle)
Rotate the plane along the z-axis.

setPlaneToXY(self, offset=0)
Set the plane orthogonal to the z-axis.

setPlaneToXZ(self, offset=0)
Set the plane orthogonal to the y-axis.

setPlaneToYZ(self, offset=0)
Set the plane orthogonal to the x-axis.

translate(self, x_offset, y_offset, z_offset)
Translate the rendered object along the x, y and z-axes.

Method Details

[hide private]

_getTransform(self)

Return the transform instance.

Returns: vtkTransform: Transform instance that is used to specify the orientation of the plane

rotateX(self, angle)

Rotate the plane along the x-axis.

Parameters:

angle (Number) - Angle to rotate the plane

rotateY(self, angle)

Rotate the plane along the y-axis.

Parameters:

angle (Number) - Angle to rotate the plane

rotateZ(self, angle)

Rotate the plane along the z-axis.

Parameters:

angle (Number) - Angle to rotate the plane

setPlaneToXY(self, offset=0)

Set the plane orthogonal to the z-axis.

Parameters:

offset (Number) - Amount to translate along the z-axis

setPlaneToXZ(self, offset=0)

Set the plane orthogonal to the y-axis.

Parameters:

offset (Number) - Amount to translate along the y-axis

setPlaneToYZ(self, offset=0)

Set the plane orthogonal to the x-axis.

Parameters:

offset (Number) - Amount to translate along the x-axis

translate(self, x_offset, y_offset, z_offset)

Translate the rendered object along the x, y and z-axes.

Parameters:

x_offset (Number) - Amount to translate along the x-axis
y_offset (Number) - Amount to translate along the y-axis
z_offset (Number) - Amount to translate along the z-axis