private Texture2D EncodeToTexture(FlowMap _inst, FlowPath.Sample[,] _outputs)
{
Texture2D _tex = new Texture2D(_outputs.GetUpperBound(0) + 1, _outputs.GetUpperBound(1) + 1, TextureFormat.ARGB32, false);
_inst.cached = new FlowPath.Sample[_tex.width * _tex.height];
int _c = 0;
for (int _y = 0; _y < _tex.height; ++_y)
{
for (int _x = 0; _x < _tex.width; ++_x)
{
_inst.cached[_c] = _outputs[_x, _y];
Color _clr = new Color(0.5f, 0.5f, 0.5f, 0.0f);
Vector3 _dir = _outputs[_x, _y].direction;
_clr.r = _dir.x * 0.5f + 0.5f;
_clr.g = _dir.z * 0.5f + 0.5f;
//_clr.b = _dir.y * 0.5f + 0.5f;
_clr.b = 0.5f;
_clr.a = 1.0f;
#if false
// debug uv mapping
_clr.r = (float)_x / _tw;
_clr.g = (float)_y / _th;
_clr.b = 0;
#endif
_tex.SetPixel(_x, _y, _clr);
_c++;
}
}
if (_inst.blurSize > 0 && _inst.blurIterations > 0)
{
Texture2D _texBlurred = new Blur().FastBlur(_tex, _inst.blurSize, _inst.blurIterations);
DestroyImmediate(_tex);
_tex = _texBlurred;
}
return(_tex);
}
private void SaveTexture(FlowMap _inst, Texture2D _tex)
{
Scene _scene = SceneManager.GetActiveScene();
string _path = System.IO.Path.GetDirectoryName(_scene.path);
_path = _path + "/" + _inst.Filename;
System.IO.File.WriteAllBytes(Application.dataPath + _path.Remove(0, 6), _tex.EncodeToPNG());
AssetDatabase.ImportAsset(_path);
TextureImporter _imp = TextureImporter.GetAtPath(_path) as TextureImporter;
_imp.filterMode = FilterMode.Bilinear;
_imp.wrapMode = TextureWrapMode.Clamp;
_imp.anisoLevel = 0;
_imp.mipmapEnabled = false;
_imp.sRGBTexture = false;
_imp.textureCompression = TextureImporterCompression.Uncompressed;
_imp.SaveAndReimport();
}
} // OnSceneGUI
private void Bake(FlowMap _inst)
{
int _tw = Mathf.NextPowerOfTwo((int)_inst.resolution.x);
int _th = Mathf.NextPowerOfTwo((int)_inst.resolution.y);
Vector2 _delta = new Vector2(_inst.size.x / _tw, _inst.size.y / _th);
List <FlowPath.Sample> _samples = _inst.GatherSamples(_delta * _inst.minimumDistance);
if (_samples.Count == 0)
{
return;
}
FlowPath.Sample[,] _outputs = new FlowPath.Sample[_tw, _th];
InterpolateSamples(_inst, _samples, _delta, _outputs);
Texture2D _tex = EncodeToTexture(_inst, _outputs);
SaveTexture(_inst, _tex);
} // Bake
