1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
|
########################################################################
#
# Date: 2000 Authors: Michel Sanner, Kevin Chan
#
# vareille@scripps.edu
# sanner@scripps.edu
#
# The Scripps Research Institute (TSRI)
# Molecular Graphics Lab
# La Jolla, CA 92037, USA
#
# Copyright: Michel Sanner and TSRI 2000
#
# revision: Guillaume Vareille
#
#########################################################################
#
# $Header: /opt/cvs/python/packages/share1.5/DejaVu/quad_strip.py,v 1.29.8.1 2016/02/11 01:25:21 annao Exp $
#
# $Id: quad_strip.py,v 1.29.8.1 2016/02/11 01:25:21 annao Exp $
#
from opengltk.OpenGL import GL
from DejaVu.IndexedPolygons import IndexedPolygons
from DejaVu.viewerFns import checkKeywords
import DejaVu.datamodel, DejaVu.viewerConst
from DejaVu.colorTool import glMaterialWithCheck, resetMaterialMemory
class Quad_strip(IndexedPolygons):
""" Class to draw a quad strip or multiple quad strip geometries. """
keywords = IndexedPolygons.keywords + [
'stripBegin',
'fnormals',
]
def __init__(self, name=None, check=1, **kw):
""" Constructor:
Takes an array of vertices and splits it into separate quad strips
at specific vertices specified by stripBegin, which is and array of
indices. Generates faceSet. In this class, a face corresponds to a
quad strip. Calls IndexedPolygons constructor. Calls
MatBindingMode() to set the correct mode specific to a quad strip,
overwriting the binding mode set by MaterialBindingMode in the Geom
class. Initializes frontPolyMode to FILL. Initializes currentCol and
currentMat."""
apply( IndexedPolygons.__init__, (self, name, check), kw)
for face in self.materials.keys():
for j in range(5):
self.MatBindingMode(j, face)
self.frontPolyMode = GL.GL_FILL
#self.inheritFrontPolyMode = 0
self.currentCol = []
for i in range(4):
self.currentCol.append(-1.0)
self.currentMat = []
for i in range(2):
mat = []
for j in range(5):
rgba = []
for k in range(4):
rgba.append(-1.0)
mat.append(rgba)
self.currentMat.append(mat)
def Set(self, check=1, redo=1, updateOwnGui=True, **kw):
"""set data for this object: Set polygon's vertices, faces, normals or materials
check=1 : verify that all the keywords present can be handle by this func
redo=1 : append self to viewer.objectsNeedingRedo
updateOwnGui=True : allow to update owngui at the end this func
"""
v = kw['vertices']
self.stripBegin = kw.get( 'stripBegin')
if self.stripBegin is None:
self.stripBegin = [0, len(v)]
for j in self.stripBegin:
assert j%2==0
faces = []
for i in range(0, len(self.stripBegin)-1):
strip_ind = ()
for j in range(self.stripBegin[i], self.stripBegin[i+1]):
strip_ind = strip_ind + (j,)
faces.extend([strip_ind])
kw['faces'] = faces
self.fnormals = kw.get( 'fnormals')
redoFlags = apply( IndexedPolygons.Set, (self, check, 0), kw )
return self.redoNow(redo, updateOwnGui, redoFlags)
def MatBindingMode(self, propNum, face=GL.GL_FRONT):
""" For the given face and material property corresponding to propNum,
the method sets the binding mode. If there is one value, the mode is
OVERALL; if the number of values equals the number of vertices, strips,
or faces(quads), the mode is PER_VERTEX, PER_PART, or PER_FACE,
respectively. Else, mode is none. """
OVERALL, PER_VERTEX, PER_PART, PER_FACE = -1, 10, 11, 12, 13
#NONE, OVERALL, PER_VERTEX, PER_PART, PER_FACE = -1, 10, 11, 12, 13
num = propNum
f = face
nn = self.materials[f].prop[num].shape[0]
self.inheritMaterial = 0
if nn == 1:
self.materials[f].binding[num] = OVERALL
elif nn == len(self.vertexSet.vertices):
self.materials[f].binding[num] = PER_VERTEX
elif hasattr(self, 'faceSet') and nn == len(self.faceSet):
self.materials[f].binding[num] = PER_PART
elif hasattr(self, 'IndexedFaceSet') and nn==len(self.IndexedFaceSet):
self.materials[f].binding[num] = PER_FACE
self.shading = GL.GL_FLAT
self.GetNormals()
else:
self.materials[f].binding[num] = -1
self.inheritMaterial = 1
def buildIndexedFaceSet(self):
"""Build the set of indices describing the strips"""
f = []
for stripNum in range(1,len(self.stripBegin)):
for i in range(self.stripBegin[stripNum-1],
self.stripBegin[stripNum]-3, 2):
f.extend([(i, i+1, i+3, i+2)])
self.IndexedFaceSet = DejaVu.datamodel.FaceSet( f, (0,0) )
def GetNormals(self):
""" Gets the proper normals for smooth or flat shading. Calls
buildIndexedFaceSet(). Sets face normals or computes them if not given.
Sets object normals to the vertex normals for smooth shading or to the
face normals for flat shading. If shading none, normals are none."""
if self.shading==GL.GL_NONE:
self.normals = None
else:
if hasattr(self, 'faceSet'):
self.StripFaceSet = self.faceSet
self.buildIndexedFaceSet()
self.faceSet = self.IndexedFaceSet
if self.fnormals:
self.faceSet.normals.SetValues(self.fnormals)
else:
self.FaceNormalFunction( self.ComputeFaceNormals )
self.faceSet.normals.ComputeMode( DejaVu.viewerConst.AUTO )
if self.shading==GL.GL_FLAT:
if hasattr(self, 'faceSet'):
self.normals = self.faceSet.normals.GetProperty()
else: self.normals = None
elif self.shading==GL.GL_SMOOTH:
self.normals = self.vertexSet.normals.GetProperty()
self.faceSet = self.StripFaceSet
else: self.normals = None
def isNewColor(self, c=None):
""" Compares new color c to the current color. If the same, method
returns 0. If the new color is different, the current color gets the
values of the new color, and the method returns 1. """
if c is None:
for i in self.currentCol:
i = -1.0 # set an impossible color
return 0
elif abs(c[0]-self.currentCol[0]) < 0.0001 and \
abs(c[1]-self.currentCol[1]) < 0.0001 and \
abs(c[2]-self.currentCol[2]) < 0.0001 and \
abs(c[3]-self.currentCol[3]) < 0.0001:
return 0
else:
self.currentCol[0] = c[0]
self.currentCol[1] = c[1]
self.currentCol[2] = c[2]
self.currentCol[3] = c[3]
return 1
## def isNewMaterial(self, face, prop, c):
## """ For the given face (face) and property number (prop), the method
## compares the new material value c to the current material. If
## the same, method returns 0. If different, the current material gets
## the new material value, and the method returns 1. """
## f = not(face==GL.GL_FRONT)
## if not c:
## for i in range(2):
## for j in range(5):
## for k in self.currentMat[i][j]:
## k = -1.0
## return 0
## elif abs(c[0]-self.currentMat[f][prop][0]) < 0.0001 and \
## abs(c[1]-self.currentMat[f][prop][1]) < 0.0001 and \
## abs(c[2]-self.currentMat[f][prop][2]) < 0.0001 and \
## abs(c[3]-self.currentMat[f][prop][3]) < 0.0001:
## return 0
## else:
## self.currentMat[f][prop][0] = c[0]
## self.currentMat[f][prop][1] = c[1]
## self.currentMat[f][prop][2] = c[2]
## self.currentMat[f][prop][3] = c[3]
## return 1
def DisplayFunction(self):
""" Either executes the present display list or creates a display
list to display the quad strip. """
OVERALL, PER_VERTEX, PER_PART, PER_FACE = -1, 10, 11, 12, 13
#NONE, OVERALL, PER_VERTEX, PER_PART, PER_FACE = -1, 10, 11, 12, 13
propConst = DejaVu.viewerConst.propConst
noCol = 0
if self.viewer.currentCamera.renderMode == GL.GL_SELECT:
save = self.dpyList
temp = self.primitiveType
if self.frontPolyMode == GL.GL_FILL:
self.primitiveType = GL.GL_POLYGON
elif self.frontPolyMode == GL.GL_LINE:
self.primitiveType = GL.GL_LINE_LOOP
elif self.frontPolyMode == GL.GL_POINT:
self.primitiveType = GL.GL_POINTS
self.faceSet = self.IndexedFaceSet
IndexedPolygons.DisplayFunction(self)
self.faceSet = self.StripFaceSet
self.primitiveType = temp
self.dpyList = save
return
if self.dpyList:
IndexedPolygons.DisplayFunction(self)
def Draw(self):
OVERALL, PER_VERTEX, PER_PART, PER_FACE = -1, 10, 11, 12, 13
#NONE, OVERALL, PER_VERTEX, PER_PART, PER_FACE = -1, 10, 11, 12, 13
propConst = DejaVu.viewerConst.propConst
noCol = 1
vert = self.vertexSet.vertices.array
if len(vert)==0: return
if self.materials[GL.GL_FRONT] and not self.inheritMaterial:
mat = self.materials[GL.GL_FRONT]
frontMat = fpProp = []
frontMatBind = fpBind = []
for propInd in range(4):
b, p = mat.GetProperty(propInd)
fpProp.append(p)
fpBind.append(b)
fpProp.append(mat.prop[4])
fpBind.append(mat.binding[4])
# frontMat = self.materials[GL.GL_FRONT].prop
# frontMatBind = self.materials[GL.GL_FRONT].binding
else:
frontMat = None
frontMatBind = None
if self.materials[GL.GL_BACK] and not self.inheritMaterial:
mat = self.materials[GL.GL_BACK]
backMat = bpProp = []
backMatBind = bpBind = []
for propInd in range(4):
b, p = mat.GetProperty(propInd)
bpProp.append(p)
bpBind.append(b)
bpProp.append(mat.prop[4])
bpBind.append(mat.binding[4])
# backMat = self.materials[GL.GL_BACK].prop
# backMatBind = self.materials[GL.GL_BACK].binding
else:
backMat = None
backMatBind = None
## texCoords = None
## if hasattr(self.vertexSet, "texCoords"):
## if self.vertexSet.texCoords.status >= viewerConst.COMPUTED:
## texCoords = self.vertexSet.texCoords.array
if not self.frontAndBack is None:
face = GL.GL_FRONT
else:
face = GL.GL_FRONT_AND_BACK
if not self.normals: # overall color for no normals or lighting
if frontMat:
if frontMatBind[noCol] == OVERALL:
GL.glColor4fv( frontMat[noCol][0] )
else:
if len(self.normals)==1: # overall normal
n = self.normals
GL.glNormal3dv(n[0])
if frontMat:
for j in range(5): # overall materials
if frontMatBind[j] == OVERALL:
glMaterialWithCheck( face, propConst[j],
frontMat[j][0] )
if backMat and not self.frontAndBack:
for j in range(5):
if backMatBind[j] == OVERALL:
glMaterialWithCheck( GL.GL_BACK, propConst[j],
backMat[j][0] )
self.isNewColor()
#self.isNewMaterial(0,0,0)
n = self.normals
# loop over each strip
for stripNum in range(1,len(self.stripBegin)):
c = vert[self.stripBegin[stripNum-1]:self.stripBegin[stripNum]]
GL.glPushName(stripNum)
GL.glBegin(GL.GL_QUAD_STRIP)
# per part material properties
if frontMat:
if frontMatBind[noCol] == PER_PART:
if self.isNewColor(c=frontMat[noCol][stripNum-1]):
GL.glColor4fv(frontMat[noCol][stripNum-1])
if n:
if frontMat:
for j in range(5):
if frontMatBind[j]==PER_PART:
glMaterialWithCheck( face,
propConst[j],
frontMat[j][stripNum-1] )
if backMat and not self.frontAndBack:
for j in range(5):
if backMatBind[j] == PER_PART:
glMaterialWithCheck( GL.GL_BACK,
propConst[j],
backMat[j][stripNum-1] )
# loop over each vertex in a strip
i = 0
for v in c:
if n:
if self.shading==GL.GL_FLAT:
if i > 1 and i%2==0:
GL.glNormal3dv(n[(self.stripBegin[stripNum-1]+i-(2*stripNum))/2])
elif self.shading==GL.GL_SMOOTH:
GL.glNormal3dv(n[self.stripBegin[stripNum-1]+i])
else:
pass
# per face (per triangle) material properties
if not n:
if frontMat:
if frontMatBind[noCol] == PER_FACE:
if i > 1 and i%2==0:
if self.isNewColor(c=frontMat[noCol][(self.stripBegin[stripNum-1]+i-(2*stripNum))/2]):
GL.glColor4fv(frontMat[noCol][(self.stripBegin[stripNum-1]+i-(2*stripNum))/2])
else:
if frontMat:
for k in range(5):
if frontMatBind[k] == PER_FACE:
if i > 1 and i%2==0:
glMaterialWithCheck( face,
propConst[k],
frontMat[k][(self.stripBegin[stripNum-1]+i-(2*stripNum))/2] )
if backMat and not self.frontAndBack:
for k in range(5):
if backMatBind[k] == PER_FACE:
if i > 1 and i%2==0:
glMaterialWithCheck( GL.GL_BACK,
propConst[k],
backMat[k][(self.stripBegin[stripNum-1]+i-(2*stripNum))/2] )
# per vertex material properties
if not n:
if frontMat:
if frontMatBind[noCol] == PER_VERTEX:
if self.isNewColor(c=frontMat[noCol][self.stripBegin[stripNum-1]+i]):
GL.glColor4fv(frontMat[noCol][self.stripBegin[stripNum-1]+i])
else:
if frontMat:
for k in range(5):
if frontMatBind[k] == PER_VERTEX:
glMaterialWithCheck( face, propConst[k],
frontMat[k][self.stripBegin[stripNum-1]+i] )
if backMat and not self.frontAndBack:
for k in range(5):
if backMatBind[k] == PER_VERTEX:
glMaterialWithCheck( GL.GL_BACK,
propConst[k],
backMat[k][self.stripBegin[stripNum-1]+i] )
# draw vertex
GL.glVertex3dv(v)
i = i + 1
GL.glEnd()
GL.glPopName()
return 1
if __name__=='__main__':
import pdb, numpy
from DejaVu import Viewer
vi = Viewer()
vert = [(0, 1, 0), (1, 0, 1), (1, 1, 0), (2, 0, -1), (2, 1, 0), (3, 0, 1),
(3, 1, 0), (4, 0, -1), (4, 1, 0), (5, 0, 1), (5, 3, 0), (6, -2, 1)]
v1 = numpy.array(vert)
v2 = v1 + 3.0
v3 = numpy.concatenate( (v1,v2) )
colors = [(0, 0, 1), (1, 0, 0), (0, 1, 0), (0, 0, 1), (1, 0, 0), (0, 1, 0),
(0, 0, 1), (1, 0, 0), (0, 1, 0), (0, 0, 1), (1, 0, 0), (0, 1, 0)]
v4 = v2 + 3.0
v5 = numpy.concatenate( (v3,v4) )
strip3 = Quad_strip(vertices = v5, stripBegin=[0,12,24,36], materials = colors+colors[0:3])
#strip.Set(materials = [(1, 0, 0)])
vi.AddObject(strip3)
strip2 = Quad_strip(vertices = v3, stripBegin=[0,12,24], materials = colors[0:10])
# strip2.Set(materials = [(0, 1, 0), (0, 0, 1)])
vi.AddObject(strip2)
strip = Quad_strip(vertices = vert, materials = colors[0:5])
# strip.Set(materials = [(1, 0, 0), (0, 0, 1), (1, 0, 0), (0, 1, 0), (0, 0, 1) ])
vi.AddObject(strip)
|
