private static void SplitLargest()
{
var largestIndex = 0;
var largestArea = 0;
for (var i = 0; i < quadCount; i++)
{
var quad = quads[i];
if (quad.Area > largestArea)
{
largestIndex = i;
largestArea = quad.Area;
}
}
var first = new D2dQuad();
var second = new D2dQuad();
quads[largestIndex].Split(ref first, ref second);
quads[largestIndex] = first;
if (quads.Count > quadCount)
{
quads[quadCount] = second;
}
else
{
quads.Add(second);
}
quadCount += 1;
}
public static void Fracture(D2dDestructible destructible, int count, float irregularity)
{
if (destructible != null && count > 0)
{
D2dSplitGroup.ClearAll();
{
var width = destructible.AlphaWidth;
var height = destructible.AlphaHeight;
var mainQuad = new D2dQuad();
quadCount = 1;
pointCount = 0;
xMin = 0;
xMax = width - 1;
yMin = 0;
yMax = height - 1;
mainQuad.BL = new D2dVector2(xMin, yMin);
mainQuad.BR = new D2dVector2(xMax, yMin);
mainQuad.TL = new D2dVector2(xMin, yMax);
mainQuad.TR = new D2dVector2(xMax, yMax);
mainQuad.Calculate();
if (quads.Count > 0)
{
quads[0] = mainQuad;
}
else
{
quads.Add(mainQuad);
}
for (var i = 0; i < count; i++)
{
SplitLargest();
}
if (irregularity > 0.0f)
{
FindPoints();
ShiftPoints(irregularity);
}
for (var i = 0; i < quadCount; i++)
{
var quad = quads[i];
var group = D2dSplitGroup.GetSplitGroup();
group.AddTriangle(quad.BL, quad.BR, quad.TL);
group.AddTriangle(quad.TR, quad.TL, quad.BR);
}
destructible.SplitWhole(D2dSplitGroup.SplitGroups);
}
D2dSplitGroup.ClearAll();
}
}
public void Split(ref D2dQuad first, ref D2dQuad second)
{
// Vertical split
if (Size.X > Size.Y)
{
var TS = TL + (TR - TL) / 2;
var BS = BL + (BR - BL) / 2;
first.BL = BL;
first.BR = BS;
first.TL = TL;
first.TR = TS;
second.BL = BS;
second.BR = BR;
second.TL = TS;
second.TR = TR;
}
// Horizontal split
else
{
var LS = BL + (TL - BL) / 2;
var RS = BR + (TR - BR) / 2;
first.BL = LS;
first.BR = RS;
first.TL = TL;
first.TR = TR;
second.BL = BL;
second.BR = BR;
second.TL = LS;
second.TR = RS;
}
first.Calculate();
second.Calculate();
}