46 lines
1.2 KiB
Python
Executable File
46 lines
1.2 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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TUTORIAL_SHARED_PATH = "../../tutorial/shared/"
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# Mesh with per-face color
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V = igl.eigen.MatrixXd()
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F = igl.eigen.MatrixXi()
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C = igl.eigen.MatrixXd()
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viewer = igl.viewer.Viewer()
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def mouse_down(viewer, a, b):
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bc = igl.eigen.MatrixXd()
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# Cast a ray in the view direction starting from the mouse position
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fid = igl.eigen.MatrixXi([-1])
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coord = igl.eigen.MatrixXd([viewer.current_mouse_x, viewer.core.viewport[3] - viewer.current_mouse_y])
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hit = igl.unproject_onto_mesh(coord, viewer.core.view * viewer.core.model,
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viewer.core.proj, viewer.core.viewport, V, F, fid, bc)
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if hit:
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C.setRow(fid[0, 0], igl.eigen.MatrixXd([[1, 0, 0]]))
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viewer.data.set_colors(C)
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return True
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return False
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print("Usage: [LeftMouseClick] to select a face")
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# Load a mesh in OFF format
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igl.readOFF(TUTORIAL_SHARED_PATH + "fertility.off", V, F)
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# Initialize white
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C.setConstant(F.rows(), 3, 1.0)
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viewer.data.set_mesh(V, F)
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viewer.data.set_colors(C)
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viewer.core.show_lines = False
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viewer.callback_mouse_down = mouse_down
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viewer.launch()
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