bool LineOfSightCanSee(FogOfWarShape shape, Vector2 offset, float fogradius)
{
if (shape.lineOfSight == null)
{
return(true);
}
float idx = FogOfWarUtils.ClockwiseAngle(Vector2.up, offset) * shape.lineOfSight.Length / 360.0f;
if (idx < 0)
{
idx += shape.lineOfSight.Length;
}
// sampling
float value;
if (_map.filterMode == FilterMode.Point)
{
value = shape.lineOfSight[Mathf.RoundToInt(idx) % shape.lineOfSight.Length];
}
else
{
int idxlow = Mathf.FloorToInt(idx);
int idxhigh = (idxlow + 1) % shape.lineOfSight.Length;
value = Mathf.LerpUnclamped(shape.lineOfSight[idxlow], shape.lineOfSight[idxhigh], idx % 1);
}
float dist = value * fogradius;
return(offset.sqrMagnitude < dist * dist);
}
public DrawInfo(FogOfWarMap map, FogOfWarShape shape, float xradius, float yradius)
{
// convert size to fog space
fogForward = shape.foward;
forwardAngle = FogOfWarUtils.ClockwiseAngle(Vector2.up, fogForward) * Mathf.Deg2Rad;
float sin = Mathf.Sin(-forwardAngle);
float cos = Mathf.Cos(-forwardAngle);
Vector2 relativeoffset = new Vector2(shape.offset.x * cos - shape.offset.y * sin, shape.offset.x * sin + shape.offset.y * cos);
fogCenterPos = FogOfWarConversion.WorldToFog(FogOfWarConversion.WorldToFogPlane(shape.eyePosition, map.plane) + relativeoffset, map.offset, map.resolution, map.size);
fogEyePos = new Vector2i(FogOfWarConversion.WorldToFog(shape.eyePosition, map.plane, map.offset, map.resolution, map.size));
// find ranges
if (shape.visibleCells == null)
{
xMin = Mathf.Max(0, Mathf.RoundToInt(fogCenterPos.x - xradius));
xMax = Mathf.Min(map.resolution.x - 1, Mathf.RoundToInt(fogCenterPos.x + xradius));
yMin = Mathf.Max(0, Mathf.RoundToInt(fogCenterPos.y - yradius));
yMax = Mathf.Min(map.resolution.y - 1, Mathf.RoundToInt(fogCenterPos.y + yradius));
}
else
{
fogCenterPos = FogOfWarConversion.SnapToNearestFogPixel(fogCenterPos);
fogEyePos = new Vector2i(FogOfWarConversion.SnapToNearestFogPixel(FogOfWarConversion.WorldToFog(shape.eyePosition, map.offset, map.resolution, map.size)));
Vector2i pos = new Vector2i(Mathf.RoundToInt(fogCenterPos.x), Mathf.RoundToInt(fogCenterPos.y));
Vector2i rad = new Vector2i(Mathf.RoundToInt(xradius), Mathf.RoundToInt(yradius));
xMin = Mathf.Max(0, Mathf.RoundToInt(pos.x - rad.x));
xMax = Mathf.Min(map.resolution.x - 1, Mathf.RoundToInt(pos.x + rad.x));
yMin = Mathf.Max(0, Mathf.RoundToInt(pos.y - rad.y));
yMax = Mathf.Min(map.resolution.y - 1, Mathf.RoundToInt(pos.y + rad.y));
}
}
public Texture Apply(Texture2D fogtexture, Vector2i resolution, int amount, int iterations, FogOfWarBlurType type)
{
if (amount <= 0 || iterations <= 0)
{
return(fogtexture);
}
if (_blurMaterial == null)
{
_blurMaterial = new Material(Shader.Find("Hidden/FogOfWarBlurShader"));
}
_blurMaterial.SetFloat("_BlurAmount", amount);
_blurMaterial.SetKeywordEnabled("GAUSSIAN3", type == FogOfWarBlurType.Gaussian3);
_blurMaterial.SetKeywordEnabled("GAUSSIAN5", type == FogOfWarBlurType.Gaussian5);
_blurMaterial.SetKeywordEnabled("ANTIALIAS", type == FogOfWarBlurType.Antialias);
SetupRenderTarget(resolution, ref _target);
if (iterations > 1)
{
SetupRenderTarget(resolution, ref _source);
}
RenderTexture lastrt = RenderTexture.active;
RenderTexture.active = _target;
Graphics.Blit(fogtexture, _blurMaterial);
for (int i = 1; i < iterations; ++i)
{
FogOfWarUtils.Swap(ref _target, ref _source);
RenderTexture.active = _target;
Graphics.Blit(_source, _blurMaterial);
}
RenderTexture.active = lastrt;
return(_target);
}