void AddNextFillLine(LineFill line,
int xMin,
int xMax,
int y,
bool isNext,
bool downwards,
int height,
Stack <LineFill> lines,
System.Func <int, int, bool> shouldDrawTestCallback,
System.Action <int, int> drawCallback)
{
var inRange = false;
var rangeXMin = xMin;
int x; // needs use outside of the loop
for (x = xMin; x <= xMax; ++x)
{
// skip testing if testing previous line within previous range
var empty = (isNext || (x <line.XMin || x> line.XMax)) && y < height && shouldDrawTestCallback(x, y);
if (!inRange && empty)
{
rangeXMin = x;
inRange = true;
}
else if (inRange && !empty)
{
lines.Push(new LineFill {
XMin = rangeXMin,
XMax = x - 1,
Y = y,
Direction = downwards ? FillDirection.Down : FillDirection.Up,
ShouldPaintLeft = xMin == rangeXMin,
ShouldPaintRight = false,
});
inRange = false;
}
if (inRange)
{
drawCallback(x, y);
}
// skip
if (!isNext && x == line.XMin)
{
x = line.XMax;
}
}
if (inRange)
{
lines.Push(new LineFill {
XMin = rangeXMin,
XMax = x - 1,
Y = y,
Direction = downwards ? FillDirection.Down : FillDirection.Up,
ShouldPaintLeft = rangeXMin == xMin,
ShouldPaintRight = true,
});
}
}
void AddNextFillLine(LineFill line,
int xMin,
int xMax,
int y,
bool isNext,
bool downwards,
int height,
Stack<LineFill> lines,
System.Func<int, int, bool> shouldDrawTestCallback,
System.Action<int, int> drawCallback) {
var inRange = false;
var rangeXMin = xMin;
int x; // needs use outside of the loop
for(x = xMin; x <= xMax; ++x) {
// skip testing if testing previous line within previous range
var empty = (isNext || (x < line.XMin || x > line.XMax)) && y < height && shouldDrawTestCallback(x, y);
if(!inRange && empty) {
rangeXMin = x;
inRange = true;
}
else if(inRange && !empty) {
lines.Push(new LineFill {
XMin = rangeXMin,
XMax = x - 1,
Y = y,
Direction = downwards ? FillDirection.Down : FillDirection.Up,
ShouldPaintLeft = xMin == rangeXMin,
ShouldPaintRight = false,
});
inRange = false;
}
if(inRange) {
drawCallback(x, y);
}
// skip
if(!isNext && x == line.XMin) {
x = line.XMax;
}
}
if(inRange) {
lines.Push(new LineFill {
XMin = rangeXMin,
XMax = x - 1,
Y = y,
Direction = downwards ? FillDirection.Down : FillDirection.Up,
ShouldPaintLeft = rangeXMin == xMin,
ShouldPaintRight = true,
});
}
}
