Unity C# - Plane Tiles Texture Mesh Calculating

Questions & Answers
1

My game has tiles on a mesh this is the code I use to make a 2 by by 2 square

void MakePatch() { for(int x=0; x<
size_x;x++) { for(int y=0; y<
size_y;y++) {

  		//spawn stone patches
  			int randomStoneOrBlack = Random.Range(0,200);//higher the lower

chance of it spawning
if(randomStoneOrBlack == 0)
{
if(x - 2 <= 0 || x - 2 >= size_x - 2 || y - 2 <= 0 || y -2 >= size_y - 2) {
}
else
{
map_data[x - 0,y - 0]=3;//bottom left
map_data[x - 1,y - 0]=3;//bottom right
map_data[x - 0,y - 1]=3; //top left
map_data[x - 1,y - 1]=3; //top right
}
}

  		//test
  		if(randomStoneOrBlack == 0)
  		{
  			if(x - 2 <= 0 || x - 2 >= size_x - 2 || y - 2 <= 0 || y -2 >= size_y - 2) {
  			}
  			else
  			{
  				map_data[x - 0,y - 0]=0;//bottom left
  				map_data[x - 1,y - 0]=0;//bottom right
  				map_data[x - 0,y - 1]=0; //top left
  				map_data[x - 1,y - 1]=0; //top right
  			}
  		}


  	} 	} }

This creates a 2 by 2 square

map_data[x - 0,y - 0]=0;//bottom left
					map_data[x - 1,y - 0]=0;//bottom right
					map_data[x - 0,y - 1]=0; //top left
					map_data[x - 1,y - 1]=0; //top right

Its great that I can make a square, but what I have to keep in mind I have to go negative as shown to create the square, if I go positive it wont work, but the it can be negative it doesn’t matter, I was wonder if anyone knew a way to create shapes like a circles, triangles etc… these are 1 by 1 squares. I tried making a Visual C# program to do this for my in text, but my math was not good enough, I was wondering if anyone know a way I can create shapes?

2

I I’m not going to write the code for you but if you take the Vector at the origin of the circle and connect it like this: o → v → v[(i+1) % v.Length] you should get a circle plain mesh…
var v = DrawCicle(Vector3.zero, 10f, Quaternion.identity);
for(int i = 0; i < v.Length; i++)
{
// TODO - Setup triagle here
}
…
public Vector3[] DrawCircle(Vector3 o, float r, Quaternion rot, float step = 10f, float startDegrees = 0f, float endDegrees = 360f)

  •  {*

  •  	unchecked*

  •  	{*

  •  		int count = (int)((endDegrees - startDegrees)/step);*

_ startDegrees *= Mathf.Deg2Rad;_
_ endDegrees *= Mathf.Deg2Rad;_
_ step *= Mathf.Deg2Rad;_

  •  		float theta = startDegrees;*

  •  		List<Vector3> result = new List<Vector3>(count);*

  •  		while(theta < endDegrees)*

  •  		{*

_ result.Add(rot * new Vector3(o.x + rCos(theta), o.y, o.z + rSin(theta)));_

  •  			theta += step;*

  •  		}*

  •  		return result.ToArray();*

  •  	}*

  •  }*