private void BlitFadedCircle(Rect r, float val)
{
r.halfHeight = r.halfWidth;
Point min = new Point {
x = r.centreX - r.halfWidth, y = r.centreY - r.halfHeight
};
Point max = new Point {
x = r.centreX + r.halfWidth, y = r.centreY + r.halfHeight
};
float maxDistSqr = r.halfWidth * r.halfWidth;
for (int y = min.y; y < max.y; ++y)
{
for (int x = min.x; x < max.x; ++x)
{
if (!GridUtilities.IsGridPosSafe(x, y, _width, _height))
{
continue;
}
float distSqr = GridUtilities.DistanceSqr(r.centreX, r.centreY, x, y);
float scale = 1 - (distSqr / maxDistSqr);
if (scale < 0)
{
continue;
}
float addition = val * scale;
_map[GridUtilities.GridPosToIndex(x, y, _width)] += addition;
}
}
}
public int QueueQueryForBestZero(int originX, int originY)
{
Point best = new Point {
x = originX, y = originY
};
float bestDistSqr = 9999;
for (int y = 0; y < _height; ++y)
{
for (int x = 0; x < _width; ++x)
{
if (x == originX && y == originY)
{
continue;
}
float queryDistSqr = GridUtilities.DistanceSqr(originX, originY, x, y);
if (queryDistSqr < bestDistSqr)
{
best.x = x;
best.y = y;
bestDistSqr = queryDistSqr;
}
}
}
QueueSetPixel(best.x, best.y, 5.55f);
return(0);
}