public static Texture2D GenerateRainbowGradient(int texWidth, int texHeight)
{
Texture2D tex = new Texture2D(texWidth, texHeight, TextureFormat.ARGB32, false, false);
Color c;
//int xAlphaEnd = (int)Mathf.Round(color.a * (float)texWidth);
for (int x = 0; x < texWidth; x++)
{
c = HSBColor.ToColor(new HSBColor((float)x / (float)texWidth, 1f, 1f));
for (int y = 0; y < texHeight; y++)
{
tex.SetPixel(x, y, c);
}
}
tex.Apply();
return(tex);
}
public static Texture2D GenerateColorField(int texWidth, int texHeight, Color targetColor)
{
Texture2D tex = new Texture2D(texWidth, texHeight, TextureFormat.ARGB32, false, false);
HSBColor hue = new HSBColor(targetColor);
Color c;
//int xAlphaEnd = (int)Mathf.Round(color.a * (float)texWidth);
for (int x = 0; x < texWidth; x++)
{
for (int y = 0; y < texHeight; y++)
{
c = new HSBColor(hue.h, (float)x / (float)texWidth, (float)y / (float)texHeight).ToColor();
tex.SetPixel(x, y, c);
}
}
tex.Apply();
return(tex);
}
public static HSBColor Lerp(HSBColor a, HSBColor b, float t)
{
float h, s;
//check special case black (color.b==0): interpolate neither hue nor saturation!
//check special case grey (color.s==0): don't interpolate hue!
if (a.b == 0)
{
h = b.h;
s = b.s;
}
else if (b.b == 0)
{
h = a.h;
s = a.s;
}
else
{
if (a.s == 0)
{
h = b.h;
}
else if (b.s == 0)
{
h = a.h;
}
else
{
// works around bug with LerpAngle
float angle = Mathf.LerpAngle(a.h * 360f, b.h * 360f, t);
while (angle < 0f)
{
angle += 360f;
}
while (angle > 360f)
{
angle -= 360f;
}
h = angle / 360f;
}
s = Mathf.Lerp(a.s, b.s, t);
}
return(new HSBColor(h, s, Mathf.Lerp(a.b, b.b, t), Mathf.Lerp(a.a, b.a, t)));
}
