[Bug]: set_aspect incompatible with view_init

[simbamford]

Bug summary

ax.set_aspect('equal') doesn't work properly on axes where the view has been manipulated, i.e. ax.view_init(vertical_axis='y').
It sets the aspect ratio as if the axes were still oriented in the standard way.

Code for reproduction

import numpy as np
import matplotlib.pyplot as plt
import mpl_toolkits.mplot3d as a3

plt.close('all')
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.view_init(vertical_axis='y')
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_xlabel('Z')
ax.axes.set_xlim3d(left=-1, right=3.5) 
ax.axes.set_ylim3d(bottom=0, top=10) 
ax.axes.set_zlim3d(bottom=-0.5, top=3.5) 
ax.set_aspect('equal')
    
def a(elemList):
    return np.array(elemList)

def drawTriangle(centre, size=1, color='y'):
    # A neuron is a triangle
    left = centre + a([- size / 2, - size / 2, 0])
    right = centre + a([size / 2, - size / 2, 0])
    top = centre + a([0, size / 2, 0])
    coords = a([left, top, right])
    tri = a3.art3d.Poly3DCollection([coords])
    tri.set_color(color)
    tri.set_edgecolor('k')
    ax.add_collection3d(tri)

for col in range(3):
    drawTriangle(a([col, 10, 0]))

Actual outcome

Expected outcome

You would want the vertical 'y' axis to be stretched to 10 units, instead the horizontal 'z' axis has been stretched.

Additional information

No response

Operating system

No response

Matplotlib Version

3.7.2

Matplotlib Backend

No response

Python version

No response

Jupyter version

No response

Installation

None

[Illviljan]

With #28041 I get:

[simbamford]

Yes - that's much better, thanks :)