| 1 |
""" |
| 2 |
@author: John NGUI |
| 3 |
""" |
| 4 |
|
| 5 |
import vtk |
| 6 |
from mapper import DataSetMapper |
| 7 |
from lookuptable import LookupTable |
| 8 |
from actor import Actor3D |
| 9 |
from constant import Viewport, Color, Lut, ColorMode |
| 10 |
from streamlinemodule import StreamLineModule |
| 11 |
from tube import Tube |
| 12 |
from point import PointSource |
| 13 |
from outline import Outline |
| 14 |
|
| 15 |
# NOTE: DataSetMapper, Actor3D, PointSource, StreamLineModule and Tube were |
| 16 |
# inherited to allow access to their public methods from the driver. |
| 17 |
class StreamLine(DataSetMapper, Actor3D, PointSource, StreamLineModule, Tube): |
| 18 |
|
| 19 |
""" |
| 20 |
Class that show a vector field using streamline. |
| 21 |
""" |
| 22 |
|
| 23 |
# The SOUTH_WEST default viewport is used when there is only one viewport. |
| 24 |
# This saves the user from specifying the viewport when there is only one. |
| 25 |
# If no vector field is specified, the first encountered in the file will |
| 26 |
# be loaded automatically. If no lut is specified, the color scheme will |
| 27 |
# be used. |
| 28 |
def __init__(self, scene, data_collector, scalar = None, vector = None, |
| 29 |
viewport = Viewport.SOUTH_WEST, lut = Lut.COLOR, |
| 30 |
color_mode = ColorMode.VECTOR, outline = True): |
| 31 |
""" |
| 32 |
@type scene: L{Scene <scene.Scene>} object |
| 33 |
@param scene: Scene in which objects are to be rendered on |
| 34 |
@type data_collector: L{DataCollector <datacollector.DataCollector>} |
| 35 |
object |
| 36 |
@param data_collector: Deal with source of data for visualisation |
| 37 |
@type vector: String |
| 38 |
@param vector: Vector field to load from the source file |
| 39 |
@type scalar: String |
| 40 |
@param scalar: Scalar field to load from the source file |
| 41 |
@type viewport: L{Viewport <constant.Viewport>} constant |
| 42 |
@param viewport: Viewport in which the object is to be rendered on |
| 43 |
@type lut : L{Lut <constant.Lut>} constant |
| 44 |
@param lut: Lookup table color scheme |
| 45 |
@type color_mode: L{ColorMode <constant.ColorMode>} constant |
| 46 |
@param color_mode: Type of color mode |
| 47 |
@type outline: Boolean |
| 48 |
@param outline: Places an outline around the domain surface |
| 49 |
""" |
| 50 |
|
| 51 |
# NOTE: Actor3D is inherited and there are two instances declared here. |
| 52 |
# As a result, when methods from Actor3D is invoked from the driver, |
| 53 |
# only the methods associated with the latest instance (which in this |
| 54 |
# case is the Actor3D for the Tube) can be executed. Actor3D |
| 55 |
# methods associated with Outline cannot be invoked from the driver. |
| 56 |
# They can only be called within here, which is why Outline must be |
| 57 |
# place before Tube as there is unlikely to be any changes |
| 58 |
# made to the Outline's Actor3D. |
| 59 |
|
| 60 |
# ----- Outline ----- |
| 61 |
|
| 62 |
if(outline == True): |
| 63 |
outline = Outline(data_collector._getOutput()) |
| 64 |
DataSetMapper.__init__(self, outline._getOutput()) |
| 65 |
|
| 66 |
Actor3D.__init__(self, DataSetMapper._getDataSetMapper(self)) |
| 67 |
# Default outline color is black. |
| 68 |
Actor3D.setColor(self, Color.BLACK) |
| 69 |
# Default line width is 1. |
| 70 |
Actor3D._setLineWidth(self, 1) |
| 71 |
scene._addActor3D(viewport, Actor3D._getActor3D(self)) |
| 72 |
|
| 73 |
# ----- Streamline ----- |
| 74 |
|
| 75 |
if(vector != None): |
| 76 |
print "vector" |
| 77 |
data_collector._setActiveVector(vector) |
| 78 |
elif(scalar != None): |
| 79 |
print "scalar" |
| 80 |
data_collector._setActiveScalar(scalar) |
| 81 |
|
| 82 |
# NOTE: Lookup table color mapping (color or grey scale) MUST be set |
| 83 |
# before DataSetMapper. If it is done after DataSetMapper, no effect |
| 84 |
# will take place. |
| 85 |
if(lut == Lut.COLOR): # Colored lookup table. |
| 86 |
lookup_table = LookupTable() |
| 87 |
lookup_table._setTableValue() |
| 88 |
elif(lut == Lut.GREY_SCALE): # Grey scaled lookup table. |
| 89 |
lookup_table = LookupTable() |
| 90 |
lookup_table._setLookupTableToGreyScale() |
| 91 |
|
| 92 |
PointSource.__init__(self, data_collector._getOutput()) |
| 93 |
StreamLineModule.__init__(self, data_collector._getOutput(), |
| 94 |
PointSource._getOutput(self)) |
| 95 |
|
| 96 |
Tube.__init__(self, StreamLineModule._getOutput(self)) |
| 97 |
DataSetMapper.__init__(self, Tube._getOutput(self), |
| 98 |
lookup_table._getLookupTable()) |
| 99 |
|
| 100 |
if(color_mode == ColorMode.VECTOR): # Color velocity by vector. |
| 101 |
print "vectro mode" |
| 102 |
DataSetMapper._setScalarRange(self, |
| 103 |
data_collector._getVectorRange()) |
| 104 |
elif(color_mode == ColorMode.SCALAR): # Color velocity by scalar. |
| 105 |
print "scalar mode" |
| 106 |
DataSetMapper._setScalarRange(self, |
| 107 |
data_collector._getScalarRange()) |
| 108 |
|
| 109 |
Actor3D.__init__(self, DataSetMapper._getDataSetMapper(self)) |
| 110 |
scene._addActor3D(viewport, Actor3D._getActor3D(self)) |
| 111 |
|
Parent Directory
| 
Revision Log