void InitBrushes()
{
heightBrush = new HeightBrush();
grassBrush = new GrassBrush();
noneBrush = new NoneBrush();
currentBrushStrategy = heightBrush;
}
//This Function is called when you click the menu entry
private static void CreateGrassBrush()
{
string fileName = "GrassBrush";
GrassBrush mytb = ScriptableObject.CreateInstance <GrassBrush>();
mytb.name = fileName + ".asset";
AssetDatabase.CreateAsset(mytb, "Assets/" + mytb.name + "");
}
public static void DrawPoint(Texture2D tex, Vector2 uv, GrassBrush brush)
{
int w = tex.width;
int h = tex.height;
int x = 0;
int y = 0;
Undo.RegisterCompleteObjectUndo(tex, "");
var colorStartBuffer = tex.GetPixels();
TexUV2Index(w, h, uv, ref x, ref y);
int count = (int)(brush.texPaint01Size * w * 1.5f);
for (int i = -count; i < count; i++)
{
for (int j = -count; j < count; j++)
{
int _x = x + i;
int _y = y + j;
if (_x < 0 || _x >= w)
{
continue;
}
if (_y < 0 || _y >= h)
{
continue;
}
Vector2 uv2 = TexUV(w, h, _x, _y);
float dis = Vector2.Distance(uv, uv2);
if (dis < brush.texPaint01Size)
{
int index = XYtoIndex(w, h, _x, _y);
var c = colorStartBuffer [index];
float f = 0;
float mod = brush.force;
if (brush.soft)
{
float pcg = dis / brush.texPaint01Size;
mod *= 1 - Mathf.Clamp01(pcg - (1 - brush.softEdge)) / brush.softEdge;
}
if (brush.mode == GrassBrushMode.Paint)
{
f = c.r + mod;
}
else if (brush.mode == GrassBrushMode.Erase)
{
f = c.r - mod;
}
f = Mathf.Clamp01(f);
colorStartBuffer [index] = new Color(f, f, f, f);
}
}
}
tex.SetPixels(colorStartBuffer);
tex.Apply();
// colorStartBuffer = tex.GetPixels ();
// brushBuffer = new float[tex.width, tex.height];
//
// SWUndo.RegisterCompleteObjectUndo (tex);
// SWTexThread_TexDrawPoint t = new SWTexThread_TexDrawPoint (tex, _brush);
// t.Process (_uv);
}
void OnEnable()
{
_target = target as GrassBrush;
}