pyvisi/py_src/text.py

"""
@author: John Ngui
@author: Lutz Gross
"""

import vtk
from style import Style

class Text:
    """
    Class that displays text.
    """

    def __init__(self, scene):
        """
        @type scene: L{Scene <scene.Scene>} object
        @param scene: Scene in which components are to be added to
        """

        self.scene = scene
        self.vtk_text_mapper = vtk.vtkTextMapper()
        self.vtk_text_actor = vtk.vtkScaledTextActor()

    def setText(self, text):
        """
        Set up the text mapper.

        @type text: String
        @param text: Text to be displayed   
        """

        self.vtk_text_mapper.SetInput(text)
        
        self.setActor()
        self.addActor()

    def setActor(self):
        """
        Set up the 2D text actor, its mapper and its display position.
        """

        self.vtk_text_actor.SetMapper(self.vtk_text_mapper)
        self.setPosition(50, 20) # Default text position

    def addActor(self):
        """
        Add the 2D text actor to the renderer.
        """

        self.scene.getRenderer().AddActor2D(self.vtk_text_actor)

    def setPosition(self, x_coor, y_coor):
        """
        Set the display position of the text.
        @type x_coor: Number
        @param x_coor: Coordinate along the x-axis
        @type y_coor: Number
        @param y_coor: Coordinate along the y-axis
        """

        self.vtk_text_actor.SetDisplayPosition(x_coor, y_coor)

    def setStyle(self, style):
        """
        Set the style of the text.
        @type style: L{Style <style.Style>} object
        @param style: Style of the text
        """

        self.vtk_text_mapper.SetTextProperty(style.getStyle())      
    
1	"""
2	@author: John Ngui
3	@author: Lutz Gross
4	"""
5
6	import vtk
7	from style import Style
8
9	class Text:
10	"""
11	Class that displays text.
12	"""
13
14	def __init__(self, scene):
15	"""
16	@type scene: L{Scene <scene.Scene>} object
17	@param scene: Scene in which components are to be added to
18	"""
19
20	self.scene = scene
21	self.vtk_text_mapper = vtk.vtkTextMapper()
22	self.vtk_text_actor = vtk.vtkScaledTextActor()
23
24	def setText(self, text):
25	"""
26	Set up the text mapper.
27
28	@type text: String
29	@param text: Text to be displayed
30	"""
31
32	self.vtk_text_mapper.SetInput(text)
33
34	self.setActor()
35	self.addActor()
36
37	def setActor(self):
38	"""
39	Set up the 2D text actor, its mapper and its display position.
40	"""
41
42	self.vtk_text_actor.SetMapper(self.vtk_text_mapper)
43	self.setPosition(50, 20) # Default text position
44
45	def addActor(self):
46	"""
47	Add the 2D text actor to the renderer.
48	"""
49
50	self.scene.getRenderer().AddActor2D(self.vtk_text_actor)
51
52	def setPosition(self, x_coor, y_coor):
53	"""
54	Set the display position of the text.
55	@type x_coor: Number
56	@param x_coor: Coordinate along the x-axis
57	@type y_coor: Number
58	@param y_coor: Coordinate along the y-axis
59	"""
60
61	self.vtk_text_actor.SetDisplayPosition(x_coor, y_coor)
62
63	def setStyle(self, style):
64	"""
65	Set the style of the text.
66	@type style: L{Style <style.Style>} object
67	@param style: Style of the text
68	"""
69
70	self.vtk_text_mapper.SetTextProperty(style.getStyle())
71