| 1 | """ |
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| 2 | This software was developed by the University of Tennessee as part of the |
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| 3 | Distributed Data Analysis of Neutron Scattering Experiments (DANSE) |
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| 4 | project funded by the US National Science Foundation. |
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| 5 | |
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| 6 | See the license text in license.txt |
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| 7 | |
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| 8 | copyright 2009, University of Tennessee |
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| 9 | """ |
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| 10 | import sas.realspace.VolumeCanvas as VolumeCanvas |
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| 11 | |
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| 12 | class ShapeVisitor: |
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| 13 | """ |
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| 14 | The shape visitor process a GUI object representing |
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| 15 | a shape and returns a shape description that can be |
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| 16 | processed by the VolumeCanvas. |
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| 17 | """ |
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| 18 | |
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| 19 | def __init__(self): |
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| 20 | """ |
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| 21 | Initialize visitor |
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| 22 | """ |
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| 23 | ## Place holder for the simulation canvas |
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| 24 | self.sim_canvas = None |
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| 25 | |
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| 26 | def fromCylinder(self, cyl): |
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| 27 | """ |
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| 28 | Create a simulation cylinder descriptor (computation) |
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| 29 | from the information produced by the GUI |
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| 30 | @param cyl: Cylinder object from the GUI canvas |
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| 31 | @return: VolumeCanvas.CylinderDescriptor object |
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| 32 | """ |
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| 33 | from sas.realspace.VolumeCanvas import CylinderDescriptor |
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| 34 | desc = CylinderDescriptor() |
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| 35 | |
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| 36 | desc.params["center"] = [cyl.x, cyl.y, cyl.z] |
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| 37 | # Orientation are angular offsets in degrees with respect to X, Y, Z |
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| 38 | desc.params["orientation"] = [cyl.theta_x, cyl.theta_y, cyl.theta_z] |
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| 39 | desc.params["order"] = cyl.params["order"] |
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| 40 | |
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| 41 | |
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| 42 | # Length of the cylinder |
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| 43 | desc.params["length"] = cyl.params["length"] |
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| 44 | # Radius of the cylinder |
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| 45 | desc.params["radius"] = cyl.params["radius"] |
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| 46 | # Constrast parameter |
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| 47 | desc.params["contrast"] = cyl.params["contrast"] |
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| 48 | |
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| 49 | return desc |
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| 50 | |
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| 51 | def fromSphere(self, sph): |
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| 52 | """ |
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| 53 | Create a simulation sphere descriptor (computation) |
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| 54 | from the information produced by the GUI |
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| 55 | @param sph: Sphere object from the GUI canvas |
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| 56 | @return: VolumeCanvas.SphereDescriptor object |
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| 57 | """ |
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| 58 | from sas.realspace.VolumeCanvas import SphereDescriptor |
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| 59 | desc = SphereDescriptor() |
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| 60 | |
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| 61 | desc.params["center"] = [sph.x, sph.y, sph.z] |
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| 62 | desc.params["order"] = sph.params["order"] |
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| 63 | # Radius of the sphere |
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| 64 | desc.params["radius"] = sph.params["radius"] |
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| 65 | # Constrast parameter |
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| 66 | desc.params["contrast"] = sph.params["contrast"] |
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| 67 | |
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| 68 | return desc |
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| 69 | |
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| 70 | def update_sphere(self, sph): |
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| 71 | """ |
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| 72 | Update a shape description in the simulation canvas (computation) |
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| 73 | according to the new parameters of the GUI canvas. |
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| 74 | @param sph: Sphere object from the GUI canvas |
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| 75 | """ |
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| 76 | # Check class |
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| 77 | if self.sim_canvas.shapes[sph.name].__class__.__name__=="SphereDescriptor": |
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| 78 | desc = self.sim_canvas.shapes[sph.name] |
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| 79 | |
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| 80 | desc.params["center"] = [sph.x, sph.y, sph.z] |
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| 81 | desc.params["order"] = sph.params["order"] |
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| 82 | # Radius of the sphere |
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| 83 | desc.params["radius"] = sph.params["radius"] |
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| 84 | # Constrast parameter |
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| 85 | desc.params["contrast"] = sph.params["contrast"] |
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| 86 | |
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| 87 | self.sim_canvas._model_changed() |
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| 88 | else: |
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| 89 | raise ValueError, "SimShapeVisitor: Wrong class for visited object" |
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| 90 | |
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| 91 | |
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| 92 | |
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| 93 | def update_cylinder(self, cyl): |
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| 94 | """ |
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| 95 | Update a shape description in the simulation canvas (computation) |
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| 96 | according to the new parameters of the GUI canvas. |
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| 97 | @param cyl: Cylinder object from the GUI canvas |
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| 98 | """ |
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| 99 | # Check class |
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| 100 | if self.sim_canvas.shapes[cyl.name].__class__.__name__=="CylinderDescriptor": |
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| 101 | desc = self.sim_canvas.shapes[cyl.name] |
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| 102 | |
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| 103 | desc.params["center"] = [cyl.x, cyl.y, cyl.z] |
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| 104 | # Orientation are angular offsets in degrees with respect to X, Y, Z |
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| 105 | desc.params["orientation"] = [cyl.theta_x, cyl.theta_y, cyl.theta_z] |
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| 106 | desc.params["order"] = cyl.params["order"] |
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| 107 | |
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| 108 | # Length of the cylinder |
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| 109 | desc.params["length"] = cyl.params["length"] |
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| 110 | # Radius of the cylinder |
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| 111 | desc.params["radius"] = cyl.params["radius"] |
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| 112 | # Constrast parameter |
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| 113 | desc.params["contrast"] = cyl.params["contrast"] |
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| 114 | |
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| 115 | self.sim_canvas._model_changed() |
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| 116 | else: |
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| 117 | raise ValueError, "SimShapeVisitor: Wrong class for visited object" |
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| 118 | |
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| 119 | |
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| 120 | def update(self, volCanvas, shape): |
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| 121 | """ |
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| 122 | Update the shape descriptor in the VolumeCanvas |
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| 123 | corresponding to the given 'shape' parameter |
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| 124 | |
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| 125 | @param volCanvas: VolumeCanvas object |
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| 126 | @param shape: SimCanvas.BaseShape object |
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| 127 | """ |
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| 128 | if shape.name in volCanvas.getShapeList(): |
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| 129 | self.sim_canvas = volCanvas |
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| 130 | shape.accept_update(self) |
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| 131 | else: |
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| 132 | raise ValueError, "ShapeAdapter: Shape [%s] not in list" % shape.name |
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| 133 | |
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