94 lines
2.5 KiB
Python
Executable File
94 lines
2.5 KiB
Python
Executable File
# Add the igl library to the modules search path
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import sys, os
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sys.path.insert(0, os.getcwd() + "/../")
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import pyigl as igl
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from math import sin,cos,pi
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sea_green = igl.eigen.MatrixXd([[70./255.,252./255.,167./255.]])
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V = igl.eigen.MatrixXd()
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U = igl.eigen.MatrixXd()
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F = igl.eigen.MatrixXi()
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S = igl.eigen.MatrixXd()
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b = igl.eigen.MatrixXi()
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mid = igl.eigen.MatrixXd()
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anim_t = 0.0;
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anim_t_dir = 0.03;
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arap_data = igl.ARAPData()
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def pre_draw(viewer):
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global anim_t
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bc = igl.eigen.MatrixXd(b.size(),V.cols())
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for i in range(0,b.size()):
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bc.setRow(i,V.row(b[i]))
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if S[b[i]] == 0:
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r = mid[0]*0.25
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bc[i,0] = bc[i,0] + r*sin(0.5*anim_t*2.*pi)
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bc[i,1] = bc[i,1] - r+r*cos(pi+0.5*anim_t*2.*pi)
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elif S[b[i]] == 1:
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r = mid[1]*0.15
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bc[i,1] = bc[i,1] + r + r*cos(pi + 0.15*anim_t*2.*pi)
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bc[i,2] = bc[i,2] - r*sin(0.15*anim_t*2.*pi)
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elif S[b[i]] == 2:
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r = mid[1]*0.15
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bc[i,2] = bc[i,2] + r+r*cos(pi+0.35*anim_t*2.*pi)
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bc[i,0] = bc[i,0] + r*sin(0.35*anim_t*2.*pi)
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igl.arap_solve(bc,arap_data,U)
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viewer.data.set_vertices(U)
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viewer.data.compute_normals()
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if viewer.core.is_animating:
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anim_t += anim_t_dir
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return False
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def key_down(viewer, key, mods):
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if key == ord(' '):
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viewer.core.is_animating = not viewer.core.is_animating
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return True
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return False
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igl.readOFF("../../tutorial/shared/decimated-knight.off",V,F)
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U = igl.eigen.MatrixXd(V)
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igl.readDMAT("../../tutorial/shared/decimated-knight-selection.dmat",S)
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# Vertices in selection
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b = igl.eigen.MatrixXi([[t[0] for t in [(i,S[i]) for i in range(0,V.rows())] if t[1] >= 0]]).transpose()
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# Centroid
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mid = 0.5*(V.colwiseMaxCoeff() + V.colwiseMinCoeff())
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# Precomputation
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arap_data.max_iter = 100
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igl.arap_precomputation(V,F,V.cols(),b,arap_data)
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# Set color based on selection
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C = igl.eigen.MatrixXd(F.rows(),3)
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purple = igl.eigen.MatrixXd([[80.0/255.0,64.0/255.0,255.0/255.0]])
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gold = igl.eigen.MatrixXd([[255.0/255.0,228.0/255.0,58.0/255.0]])
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for f in range(0,F.rows()):
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if S[F[f,0]]>=0 and S[F[f,1]]>=0 and S[F[f,2]]>=0:
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C.setRow(f,purple)
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else:
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C.setRow(f,gold)
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# Plot the mesh with pseudocolors
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viewer = igl.viewer.Viewer()
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viewer.data.set_mesh(U, F)
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viewer.data.set_colors(C)
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viewer.callback_pre_draw = pre_draw
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viewer.callback_key_down = key_down
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viewer.core.is_animating = True
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viewer.core.animation_max_fps = 30.
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print("Press [space] to toggle animation")
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viewer.launch()
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