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Asked By | gisburger |
Hi all,
Background
I am relatively new to Godot, I have just converted from Game Maker Studio 2.
I have created an island similar to this one: https://www.youtube.com/watch?v=tV-S9CY3F1o
Psudo code:
noise
plane mesh
surface tool
mesh data tool
create MeshInstance
Problem
I have rounded the height values to ten possible levels which makes the island terraced, a style I am going after.
The issue is that any edge that is on an angle NW to SE is rendered as a saw tooth, any line NE to SW is fine. This is due to how the mesh works.
A typical wire frame for 4 vertices as I understand it:
12
34
Would render the triangles 1,2,3 and 2,3,4
In the NE-SW direction this is fine as 2-3 is an edge. In the NW-SE case there is not an edge, so two edges will be used 1-2 and 2-4 (along with 1-3 and 3-4).
In picture form, in picture a) if we assume that dark grey is higher than white I would like to be able to swap which vertices are used to draw the triangles for that particular set of four vertices.
I have tried
PRIMITIVE_TRIANGLES
PRIMITIVE_TRIANGLE_STRIP
PRIMITIVE_TRIANGLE_FAN
I had a quick exploration into how the data_tool (I think?) stores the vertices. My thinking was that I could iterate through and check relative heights to neighbor vertices, and swap the order of two vertices accordingly, however between tests and the documentation I could not work out how the data is stored/used.
If any additional information is required please ask. I appreciate any help that can be given.
Thanks
UPDATE: I now think I need to change something in the surface_tool step, although the documentation is very high level and I’m not sure how to change it.