public override void CalculateShadow(SgtLight light)
{
var direction = default(Vector3);
var position = default(Vector3);
var color = default(Color);
SgtLight.Calculate(light, transform.position, null, null, ref position, ref direction, ref color);
var dot = Vector3.Dot(direction, transform.up);
var radiusXZ = (transform.lossyScale.x + transform.lossyScale.z) * 0.5f * RadiusMax;
var radiusY = transform.lossyScale.y * RadiusMax;
var radius = GetRadius(radiusY, radiusXZ, dot * Mathf.PI * 0.5f);
var rotation = Quaternion.FromToRotation(direction, Vector3.back);
var vector = rotation * transform.up;
var spin = Quaternion.LookRotation(Vector3.forward, new Vector2(-vector.x, vector.y)); // Orient the shadow ellipse
var scale = SgtHelper.Reciprocal3(new Vector3(radiusXZ, radius, 1.0f));
var shadowT = Matrix4x4.Translate(-transform.position);
var shadowR = Matrix4x4.Rotate(spin * rotation);
var shadowS = Matrix4x4.Scale(scale);
cachedActive = true;
cachedMatrix = shadowS * shadowR * shadowT;
cachedRatio = SgtHelper.Divide(RadiusMax, RadiusMax - RadiusMin);
cachedRadius = SgtHelper.UniformScale(transform.lossyScale) * RadiusMax;
cachedTexture = generatedTexture;
}
private float GetSky(Camera camera)
{
if (Lit == true && Night == true)
{
var mask = 1 << gameObject.layer;
var lights = SgtLight.Find(Lit, mask);
var lighting = 0.0f;
var cameraDirection = (camera.transform.position - transform.position).normalized;
for (var i = 0; i < lights.Count && i < 2; i++)
{
var light = lights[i];
var position = default(Vector3);
var direction = default(Vector3);
var color = default(Color);
SgtLight.Calculate(light, transform.position, null, null, ref position, ref direction, ref color);
var dot = Vector3.Dot(direction, cameraDirection) * 0.5f + 0.5f;
var night01 = Mathf.InverseLerp(NightEnd, NightStart, dot);
var night = SgtEase.Evaluate(NightEase, 1.0f - Mathf.Pow(night01, NightPower));
if (night > lighting)
{
lighting = night;
}
}
return(Mathf.Lerp(NightSky, Sky, lighting));
}
return(Sky);
}
protected virtual void LateUpdate()
{
if (generatedMesh == null || dirtyMesh == true)
{
Rebuild();
}
if (generatedMesh != null && material != null)
{
Properties.SetFloat(SgtShader._WaterLevel, waterLevel);
// Write direction of nearest light?
if (material.GetFloat("_HasNight") == 1.0f)
{
var mask = 1 << gameObject.layer;
var lights = SgtLight.Find(true, mask, transform.position);
SgtLight.FilterOut(transform.position);
if (lights.Count > 0)
{
var position = Vector3.zero;
var direction = Vector3.forward;
var color = Color.white;
SgtLight.Calculate(lights[0], transform.position, default(Transform), default(Transform), ref position, ref direction, ref color);
properties.SetVector(Shader.PropertyToID("_NightDirection"), -direction);
}
}
}
}
public override void CalculateShadow(SgtLight light)
{
if (Texture != null)
{
var direction = default(Vector3);
var position = default(Vector3);
var color = default(Color);
SgtLight.Calculate(light, transform.position, null, null, ref position, ref direction, ref color);
var rotation = Quaternion.FromToRotation(direction, Vector3.back);
var squash = Vector3.Dot(direction, transform.up); // Find how squashed the ellipse is based on light direction
var width = transform.lossyScale.x * RadiusMax;
var length = transform.lossyScale.z * RadiusMax;
var axis = rotation * transform.up; // Find the transformed up axis
var spin = Quaternion.LookRotation(Vector3.forward, new Vector2(-axis.x, axis.y)); // Orient the shadow ellipse
var scale = SgtHelper.Reciprocal3(new Vector3(width, length * Mathf.Abs(squash), 1.0f));
var skew = Mathf.Tan(SgtHelper.Acos(-squash));
var shadowT = Matrix4x4.Translate(-transform.position);
var shadowR = Matrix4x4.Rotate(spin * rotation); // Spin the shadow so lines up with its tilt
var shadowS = Matrix4x4.Scale(scale); // Scale the ring into an oval
var shadowK = SgtHelper.ShearingZ(new Vector2(0.0f, skew)); // Skew the shadow so it aligns with the ring plane
cachedActive = true;
cachedMatrix = shadowS * shadowK * shadowR * shadowT;
cachedRatio = SgtHelper.Divide(RadiusMax, RadiusMax - RadiusMin);
cachedRadius = SgtHelper.UniformScale(transform.lossyScale) * RadiusMax;
cachedTexture = Texture;
}
else
{
cachedActive = false;
}
}
public override bool CalculateShadow(ref Matrix4x4 matrix, ref float ratio)
{
var light = default(SgtLight);
if (SgtLight.Find(ref light) == true)
{
var direction = default(Vector3);
var position = default(Vector3);
var color = default(Color);
SgtLight.Calculate(light.CachedLight, transform.position, null, null, ref position, ref direction, ref color);
var dot = Vector3.Dot(direction, transform.up);
var radiusXZ = (transform.lossyScale.x + transform.lossyScale.z) * 0.5f * RadiusMax;
var radiusY = transform.lossyScale.y * RadiusMax;
var radius = GetRadius(radiusY, radiusXZ, dot * Mathf.PI * 0.5f);
var rotation = Quaternion.FromToRotation(direction, Vector3.back);
var vector = rotation * transform.up;
var spin = Quaternion.LookRotation(Vector3.forward, new Vector2(-vector.x, vector.y)); // Orient the shadow ellipse
var scale = SgtHelper.Reciprocal3(new Vector3(radiusXZ, radius, 1.0f));
var shadowT = SgtHelper.Translation(-transform.position);
var shadowR = SgtHelper.Rotation(spin * rotation);
var shadowS = SgtHelper.Scaling(scale);
matrix = shadowS * shadowR * shadowT;
ratio = SgtHelper.Divide(RadiusMax, RadiusMax - RadiusMin);
return(true);
}
return(false);
}
public override bool CalculateShadow(ref Matrix4x4 matrix, ref float ratio)
{
var light = default(SgtLight);
if (Texture != null && SgtLight.Find(ref light) == true)
{
var direction = default(Vector3);
var position = default(Vector3);
var color = default(Color);
SgtLight.Calculate(light.CachedLight, transform.position, null, null, ref position, ref direction, ref color);
var rotation = Quaternion.FromToRotation(direction, Vector3.back);
var squash = Vector3.Dot(direction, transform.up); // Find how squashed the ellipse is based on light direction
var width = transform.lossyScale.x * RadiusMax;
var length = transform.lossyScale.z * RadiusMax;
var axis = rotation * transform.up; // Find the transformed up axis
var spin = Quaternion.LookRotation(Vector3.forward, new Vector2(-axis.x, axis.y)); // Orient the shadow ellipse
var scale = SgtHelper.Reciprocal3(new Vector3(width, length * Mathf.Abs(squash), 1.0f));
var skew = Mathf.Tan(SgtHelper.Acos(-squash));
var shadowT = SgtHelper.Translation(-transform.position);
var shadowR = SgtHelper.Rotation(spin * rotation); // Spin the shadow so lines up with its tilt
var shadowS = SgtHelper.Scaling(scale); // Scale the ring into an oval
var shadowK = SgtHelper.ShearingZ(new Vector2(0.0f, skew)); // Skew the shadow so it aligns with the ring plane
matrix = shadowS * shadowK * shadowR * shadowT;
ratio = SgtHelper.Divide(RadiusMax, RadiusMax - RadiusMin);
return(true);
}
return(false);
}
private float GetSky(Vector3 eye, float localDistance)
{
var height01 = Mathf.InverseLerp(OuterRadius, innerMeshRadius, localDistance);
var mul = outerDepthTex.GetPixelBilinear(height01 / (1.0f - outerFog), 0.0f).a;
if (lit == true && night == true)
{
var mask = 1 << gameObject.layer;
var lights = SgtLight.Find(lit, mask, cachedTransform.position);
var lighting = 0.0f;
var cameraDirection = (eye - cachedTransform.position).normalized;
for (var i = 0; i < lights.Count && i < 2; i++)
{
var light = lights[i];
var position = default(Vector3);
var direction = default(Vector3);
var color = default(Color);
SgtLight.Calculate(light, cachedTransform.position, null, null, ref position, ref direction, ref color);
var dot = Vector3.Dot(direction, cameraDirection) * 0.5f + 0.5f;
var night01 = Mathf.InverseLerp(nightEnd, nightStart, dot);
var night = SgtEase.Evaluate(nightEase, 1.0f - Mathf.Pow(night01, nightPower));
if (night > lighting)
{
lighting = night;
}
}
return(Mathf.Lerp(nightSky, sky, lighting) * mul);
}
return(sky * mul);
}