Differentiable rendering can be surprisingly fragile whenever meshes are involved. A noisy gradient descent step is all it takes to turn the current reconstruction inside-out. The standard countermeasure for those kinds of problems is called Laplacian regularization. (2/7) pic.twitter.com/YvUhf86hNa
Viviani's Theorem: in an equilateral △, the sum of the distances from any interior point to the 3 sides is equal to the height of the △ pic.twitter.com/QMr4R7hYrf