private static Mesh CreateMesh(RadialBarSettings settings)
{
// radii
var innerRadius = settings.Radius - settings.Width;
// get base points along the circle;
var nPoints =
(int)(settings.Progress * Mathf.PI * 2 / settings.RadiansPerSection);
var points = new Vector2[nPoints + 1];
for (var i = 0; i < nPoints; i++)
{
points[i] = GetPoint(i * settings.RadiansPerSection);
}
// final point
points[nPoints] = GetPoint(settings.Progress * Mathf.PI * 2);
// vertices
var nVertices = (nPoints + 1) * 2;
var vertices = new Vector3[nVertices];
var colors = new Color[nVertices];
var normals = new Vector3[nVertices];
var triangles = new int[nPoints * 6];
for (var i = 0; i < nPoints + 1; i++)
{
var j = i * 2;
vertices[j] = new Vector3(points[i].x * innerRadius, 0f, points[i].y * innerRadius);
vertices[j + 1] = new Vector3(points[i].x * settings.Radius, 0f, points[i].y * settings.Radius);
colors[j] = Color.white;
colors[j + 1] = Color.white;
normals[j] = Vector3.up;
normals[j + 1] = Vector3.up;
if (i < nPoints)
{
var k = i * 6;
triangles[k] = j;
triangles[k + 1] = j + 1;
triangles[k + 2] = j + 2;
triangles[k + 3] = j + 2;
triangles[k + 4] = j + 1;
triangles[k + 5] = j + 3;
}
}
return(new Mesh
{
name = $"radialMesh({settings.Radius}, {settings.Width}, {settings.Progress}, {settings.RadiansPerSection})",
vertices = vertices,
triangles = triangles,
colors = colors,
normals = normals
});
}
private static Mesh GetMesh(RadialBarSettings settings)
{
if (_meshCache.TryGetValue(settings, out var mesh))
{
return(mesh);
}
mesh = CreateMesh(settings);
_meshCache.Add(settings, mesh);
Logger.Debug($"Mesh created: {mesh.name}");
return(mesh);
}
public static Texture Get(float radius, float width, float progress,
float radiansPerSection = 2 *Mathf.PI / 100)
{
var settings = new RadialBarSettings(radius, width, progress, radiansPerSection);
if (_renderTextureCache.TryGetValue(settings, out var texture))
{
return(texture);
}
texture = new RenderTexture(settings.Size, settings.Size, 32);
_renderTextureCache.Add(settings, texture);
RadialRenderer.Render(GetMesh(settings), texture);
return(texture);
}
