Get x,y,z co-ordinates of vertices
Mar 25 2014 | 3:20 pm
Hello,
I'm making my own .obj files in Sketchup and then opening them in Jitter with jit.gl.model.
Let's say I start with a simple, wireframe cube -
I want to get the x,y,z co-ordinates of the cube's 8 vertices and have them updated as the cube moves in 3D space.
I then want to map the co-ordinates of the moving vertices to a panning algorithm.
Does anyone know how to get these co-ordinates and have them updated in real time?
Thanks
- Mar 25 2014 | 10:15 pmyou can output a matrix containing transformed vertex positions of a model using jit.gl.model @matrixoutput 2note that enabling matrixoutput mode will prevent the model from drawing in the context, so either duplicate by using another jit.gl.model object, or use the matrix-output vertices with something like gl.mesh.
- Mar 26 2014 | 7:08 pmThanks Rob,I'm getting somewhere.Could you tell me how I format the matrix output? What the list is made up of?I've tried attaching a message box to see what the list looks like but the patch crashes every time I do that.For now I have attached a pwindow (see patch) which I think shows the x,y,z co-ordinates expressed as colour values. This looks nice but, I need to identify a vertex and track its x,y,z co-ordinates in numbers.Any clues much appreciated.
- Mar 26 2014 | 9:17 pmjust depends what you want to do with the values. jit.iter or jit.spill are probably what you want to look at.
- Mar 29 2014 | 4:10 pmThanks Rob, I'm making some headway
