Restructuring Python bindings, moved submodules and dependencies to own folders, added dependency checking for some tutorials, minor refactorings

Former-commit-id: 2214125878

python/tutorial/102_DrawMesh.py

@@ -1,15 +1,20 @@
-# Add the igl library to the modules search path
 import sys, os
-sys.path.insert(0, os.getcwd() + "/../")
 
+# Add the igl library to the modules search path
+sys.path.insert(0, os.getcwd() + "/../")
 import pyigl as igl
 
+from shared import TUTORIAL_SHARED_PATH, check_dependencies
+
+dependencies = ["viewer"]
+check_dependencies(dependencies)
+
 # Load a mesh in OFF format
 V = igl.eigen.MatrixXd()
 F = igl.eigen.MatrixXi()
-igl.readOFF("../../tutorial/shared/beetle.off", V, F)
+igl.readOFF(TUTORIAL_SHARED_PATH + "beetle.off", V, F)
 
 # Plot the mesh
-viewer = igl.viewer.Viewer();
-viewer.data.set_mesh(V, F);
-viewer.launch();
+viewer = igl.viewer.Viewer()
+viewer.data.set_mesh(V, F)
+viewer.launch()