Update python tutorials to reflect the viewer refactor

Former-commit-id: 8edf097dcf

python/tutorial/708_Picking.py

@@ -10,7 +10,7 @@ import sys, os
 # Add the igl library to the modules search path
 sys.path.insert(0, os.getcwd() + "/../")
 import pyigl as igl
-
+import numpy as np
 
 from shared import TUTORIAL_SHARED_PATH, check_dependencies, print_usage
 
@@ -22,14 +22,14 @@ def mouse_down(viewer, a, b):
     bc = igl.eigen.MatrixXd()
 
     # Cast a ray in the view direction starting from the mouse position
-    fid = igl.eigen.MatrixXi([-1])
+    fid = igl.eigen.MatrixXi(np.array([-1]))
     coord = igl.eigen.MatrixXd([viewer.current_mouse_x, viewer.core.viewport[3] - viewer.current_mouse_y])
     hit = igl.unproject_onto_mesh(coord, viewer.core.view * viewer.core.model,
       viewer.core.proj, viewer.core.viewport, V, F, fid, bc)
     if hit:
         # paint hit red
         C.setRow(fid[0, 0], igl.eigen.MatrixXd([[1, 0, 0]]))
-        viewer.data.set_colors(C)
+        viewer.data().set_colors(C)
         return True
 
     return False
@@ -51,9 +51,9 @@ if __name__ == "__main__":
     C.setConstant(F.rows(), 3, 1.0)
 
     # Show mesh
-    viewer = igl.viewer.Viewer()
-    viewer.data.set_mesh(V, F)
-    viewer.data.set_colors(C)
-    viewer.core.show_lines = False
+    viewer = igl.glfw.Viewer()
+    viewer.data().set_mesh(V, F)
+    viewer.data().set_colors(C)
+    viewer.data().show_lines = False
     viewer.callback_mouse_down = mouse_down
     viewer.launch()