Jumble of Thoughts: here I give myself the liberty to freely write down anything, without caring about correctness, completeness, formatting
or relevance. Those draft may be incomplete, incorrect, or just plain wrong. I may convert those notes into a proper article later on, or not.
[UE Deformer Graph] how to feed CPU data to the deformer graph with animation attributes or variables
[UE Deformer Graph] partial application of the deformer graph
Local application, masking which part of the mesh should deform Unreal Engine deformer graph - 03/2025 - #Unreal, Jumble
[Deformer Graph] notes
[Deformer Graph] DebugDraw node explained (Unreal Engine)
[Deformer Graph] Lattice deformer in Unreal Engine
Analysis of the deformer graph for free form deformation (FFD, Bezier grid) - 03/2025 - #Unreal, Jumble
AI memo on differences between FDM and FEM
[Summary] Weak Forumation For Finite Element Analysis
Unreal Engine C++: log categories
[Maya] How to find and display the Orig shape of some deformed object
Multivariate Taylor polynomial
Explaining Taylor Series general formula for multivariate functions with examples - 04/2024 - #Math, Jumble
Mean curvature of a parametric surface s(u, v)
Formula to compute the average of the principal curvatures given a vector valued function - 04/2024 - #Geometry, Jumble
Mean curvature of a 2D function graph z = f(x, y)
Formula of the mean curvature for a surface described with a 2 variable function graph z = f(x, y) - 04/2024 - #Geometry, Jumble
Gaussian curvature of a 2D function graph z = f(x, y)
Formula of the Gaussian curvature for a surface described with a 2 variable function graph z = f(x, y) - 04/2024 - #Geometry, Jumble
Gaussian curvature of a parametric surface s(u, v)
Formula to compute the product of principal curvatures given a vector valued function - 04/2024 - #Geometry, Jumble
Curvature k of a 1D function graph y = f(x)
[Maya] Fbx import breaks / corrupts skincluster
Exporting to FBX and importing back into Maya triggers a rebuild of all skinclusters. - 03/2024 - #Jumble, Maya
[Maya] get adjacent vertices to a vertex
[Maya] Edit a mesh after skinning
Definitions for linear, affine transformations etc
[Maya] Create UVPin with MEL
Maya parsing command arguments sample code
Distance field composition and blending
How to blend or compose implicit surfaces - 09/2023 - #Jumble, Distance Field
2D harmonic stencil a.k.a Laplace operator
Maya: create hair follicules with MEL script
Definition of a Positive Definite Matrix
First derivative of a Bézier curve (full development)
Unreal Engine Slate UI examples
Cheat sheet to add user interface elements (buttons, combobox etc) in unreal - 08/2023 - #Jumble, Unreal
Display skin weights in Unreal Engine (Skeletal Mesh Editor)
Simple animation smoothing algorithm
[Deformer Graph] how to add custom nodes to the deformer graph in UE (C++)
Writing a Plugin in Unreal Engine to extend the capabilities of the deformer graph with new nodes. - 06/2023 - #Unreal, Jumble
Summary: Permutation Arrangement Combination
C++ code for 2x2 and 3x3 Eigen decomposition
MEL how to specify the skin weight value of a joint
In maya, using MEL command how to set the value of a skin weight given a specific joint - 05/2023 - #Jumble, Maya
Handling types with Python
How to clear out (set to 0) the rotation of a joint in Maya
Reset the "rotate" attribute of a Maya joint without changing its "Joint Orient" attribute or its world position - 04/2023 - #Jumble, Maya
MEL and Python code to change / reset the bind pose of a skinned mesh in Maya
MEL and Python code to restore joint positions to their bind pose based on skincluster's .bindPreMatrix
[Maya] MEL and Python procedure to invert a 4x4 matrix in Maya
MEL & Python script code to compute the inverse of a matrix represented as an array of 16 floats - 04/2023 - #Maya, Jumble
Bi-harmonic diffusion to smooth weight maps over meshes.
Skin weight optimization (lagrange) (4)
Skin weight optimization (matrix form) (3)
Matrix form second attempt
Skin weight optimization (matrix form) (2)
(Matrix form first attempt)
Skin weight optimization (main)
Compute barycentric coordinates of a tetrahedron
SDF blending operators research paper list
A list of research papers about combining implicit surfaces a.k.a signed distance field. - 03/2013 - #Jumble, Distance Field
C code for 4x4 matrix inversion
Just leaving some code here to invert either column or row major 4x4 matrices.
Upgrade to CUDA 5.0: cudaMemcpyToSymbol invalid device symbol error
You have just upgraded to CUDA 5.0 and the function cudaMemcpyToSymbol() throws you the infamous "invalid device symbol" error. Here is what to do.
CUDA constant memory, namespace, and weird bugs
Edit: the usage of cudaMemcpyToSymbol describded below is deprecated since CUDA 4.1 (See also my new entry Upgrade to CUDA 5.0: cudaMemcpyToSymbol invalid device symbol error)
Today I want to discuss some issues I had with CUDA constant memory and share some workarounds.
Drag and drop not working in QTDesigner or QTCreator designer
This has upset me for some time and I finally found a forum entry solving this problem.
The problem: I wasn't able to drag&drop in QTDesigner any widgets from the widgets list to the form I was editing.
Solution found here: qtforum.org
You only need to add this entry to your /etc/X11/xorg.conf:
Section "Module"
Load "extmod"
EndSection
Broken F4 shortcut in Qtcreator for cuda files ".cu"
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