private TimeOfDayKeyFrame KeyFrameForAngle(float angle, bool findGreaterThan)
{
if (keyFrames.Length > 0)
{
TimeOfDayKeyFrame keyFrameA = keyFrames[0];
TimeOfDayKeyFrame keyFrameB = keyFrames[keyFrames.Length - 1];
// Clamp boundaries
if (angle <= keyFrameA.angle)
{
return(keyFrameA);
}
else if (angle >= keyFrameB.angle)
{
return(keyFrameB);
}
for (int i = 0; i < keyFrames.Length; i++)
{
keyFrameA = keyFrames[i];
keyFrameB = i < keyFrames.Length - 1 ? keyFrames[i + 1] : keyFrameA;
if (angle >= keyFrameA.angle &&
angle <= keyFrameB.angle)
{
return(findGreaterThan ? keyFrameB : keyFrameA);
}
}
}
return(null);
}
void Update()
{
if (keyFrames.Length < 1)
{
return;
}
float angle = sun.transform.localEulerAngles.x;
TimeOfDayKeyFrame keyFrameA = KeyFrameBelowAngle(angle);
TimeOfDayKeyFrame keyFrameB = KeyFrameAboveAngle(angle);
float delta = keyFrameB.angle - keyFrameA.angle;
float alpha = delta == 0.0f ? 0.5f : (angle - keyFrameA.angle) / delta;
UnityEngine.RenderSettings.fogColor = Color.Lerp(keyFrameA.fogColor, keyFrameB.fogColor, alpha);
if (sun != null)
{
sun.color = Color.Lerp(keyFrameA.sunColor, keyFrameB.sunColor, alpha);
}
if (clouds != null)
{
clouds.cloudBaseColor = Color.Lerp(keyFrameA.bottomColor, keyFrameB.bottomColor, alpha);
clouds.cloudTopColor = Color.Lerp(keyFrameA.topColor, keyFrameB.topColor, alpha);
}
if (proceduralSkybox)
{
proceduralSkybox.SetFloat("_SunSize", Mathf.Lerp(keyFrameA.sunSize,
keyFrameB.sunSize, alpha));
proceduralSkybox.SetFloat("_AtmosphereThickness", Mathf.Lerp(keyFrameA.atmosphereThickness,
keyFrameB.atmosphereThickness, alpha));
}
}