Here is a Python example which finds the intersection of a line and a plane. Where the plane can be either a point and a normal, or a 4d vector (normal form), In the examples below (code for both is provided). Also note that this function calculates a value representing where the point is on … Read more
Essentially, there is 2 cases here: the device is laying flat and not flat. Flat here means the angle between the surface of the device screen and the world xy plane (I call it the inclination) is less than 25 degree or larger than 155 degree. Think of the phone lying flat or tilt up … Read more
Just to add to @suever’s answer, you there’s no reason why you can’t create the Axes and then plot both the surface and the scatter points on it. Then there’s no need to use ax.hold(): # Create the figure fig = plt.figure() # Add an axes ax = fig.add_subplot(111,projection=’3d’) # plot the surface ax.plot_surface(xx, yy, … Read more
If you have your target point P with coordinates r_P = (x,y,z) and a plane with normal n=(nx,ny,nz) you need to define an origin on the plane, as well as two orthogonal directions for x and y. For example if your origin is at r_O = (ox, oy, oz) and your two coordinate axis in … Read more