Questions tagged [matrix]
A 2D array of numbers, symbols or expressions, arranged in rows and columns. Each row must have the same number of columns. The numbers, symbols or expressions themselves are called elements or entries.
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How to calculate the Number of blocks per column in an N step pyramid?
Designing a space game, where each ship has a certain size/ number of layers of armor.
for example 3 layers size 7.. .Which would look like this:
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How do camera matrix multiplications work?
I was trying to make a 3d renderer in Java and was very confused about how to multiply the camera matrices correctly. So for the camera transformation matrix (T) I need a translation matrix (C) and ...
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Rotation Matrix rotating in context over another Rotation Matrix
I have 2 rotation matrixes than work in a world that have three dimensions (X, Y and Z) being Y the one of the height.
One of such rotations works using Y dimension, from the point of the center of ...
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Matrices for OpenGL shaders
So I'm trying to figure out the model, view and projection matrices.
I can, with some effort, find my drawings (3x3x3 structure of cubes) in 3D space and it looks like:
The problem is, the cubes seem ...
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Camera rotation in TouchDesigner
I need help on something I'm struggling with very much.
I am working on a TouchDesigner patch where I have a Camera COMP with rotation on x, y and z axes. I need the formulas to convert such rotations ...
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How can I calculate vertex positions for a rectangle outline using a unit square, vertex normals, model matrix and outline thickness?
I'm trying to draw a hollow rectangle (i.e. the border of a rectangle without the middle) using a unit square plus normals. The actual positions are being calculated in my vertex shader.
For example, ...
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invert:condition "det==0" is true error with no obvious cause
For my project I am turning my CharacterBody3D 90 degrees on the x-axis towards a wall.
To achieve this I set basis.Z to the <...
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How to make calculating the inverse matrix more robust?
When I calculated the inverse matrix, I found that the error in using the float data type would cause the inverse matrix calculation error. Is there any good solution?
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How to obtain the Position on the screen (Vector2) of the Position of an object in the world (Vector3)?
I have been searching around for a solution to this but still haven't been able to use it or find it, the thing is i need the Screen Position of an object that is being seen, for this i have three ...
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How do I create a localtoworldmatrix and worldtolocalmatrix in Godot?
From what I can tell Godot uses Projection for 4x4 matrixes, but I see no way to generate a localtoworldmatrix from a given transform in Godot, how do I do this?
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Relationship between matrix storage order and matrix notation?
This is how I (possibly mistakenly) understand it. Please correct me if I am wrong.
Assuming a 4x4 matrix composed of vectors v0 through v3 is stored in a one-dimensional array with indices [00] ...
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Rotate UVs in shader and contains result into quad with repeat edge pixels
I ask for help - I need to rotate the UV scan inside the quad by a certain angle (set by a parameter) so that the result is embedded in the original UV, and the missing areas are repeat edge pixels. ...
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How to correctly rotate 2D orthographic projection around a central point?
I want to rotate a 2D orthographic projection around the centre point of my view. However, something is off (it looks like a translation) but I'm not sure what.
To put some concrete values on the ...
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Inertia Tensor Relative to Center of Mass vs Inertia Tensor in Body Coordinates
If I have the inertia tensor relative to the center of mass, is that the same as the inertia tensor in body coordinates?
If no, can you please explain the difference and how do I numerically calculate ...
