private ClipMask GetClipMask(RasterizerVertex v)
{
ClipMask mask = 0;
if (v.w - v.x < 0)
{
mask |= ClipMask.PosX;
}
if (v.x + v.w < 0)
{
mask |= ClipMask.NegX;
}
if (v.w - v.y < 0)
{
mask |= ClipMask.PosY;
}
if (v.y + v.w < 0)
{
mask |= ClipMask.NegY;
}
if (v.w - v.z < 0)
{
mask |= ClipMask.PosZ;
}
if (v.z + v.w < 0)
{
mask |= ClipMask.NegZ;
}
return(mask);
}
/// <summary>
/// Function to initialize the control with the data context.
/// </summary>
/// <param name="dataContext">The data context to assign.</param>
private void InitializeFromDataContext(ISpritePickMaskEditor dataContext)
{
if (dataContext == null)
{
ResetDataContext();
return;
}
_originalMask = dataContext.ClipMaskType;
RadioAlpha.Checked = dataContext.ClipMaskType == ClipMask.Alpha;
RadioColorAlpha.Checked = !RadioAlpha.Checked;
TableAlphaOnly.Visible = RadioAlpha.Checked;
Picker.Visible = !RadioAlpha.Checked;
Picker.OriginalColor = Picker.SelectedColor = dataContext.ClipMaskValue;
ColorShow.UpperColor = Color.FromArgb((int)(255 * dataContext.ClipMaskValue.Alpha), Color.White);
SliderAlpha.ValuePercentual = dataContext.ClipMaskValue.Alpha;
}
private void ClipTriangles()
{
m_clipMask.Clear();
for (int i = 0; i < m_verticesOut.Count; i++)
{
m_clipMask.Add(0);
}
for (int i = 0; i < m_verticesOut.Count; i++)
{
m_clipMask[i] = GetClipMask(m_verticesOut[i]);
}
int n = m_indicesOut.Count;
for (int i = 0; i < n; i += 3)
{
int i0 = m_indicesOut[i];
int i1 = m_indicesOut[i + 1];
int i2 = m_indicesOut[i + 2];
ClipMask clipMask = m_clipMask[i0] | m_clipMask[i1] | m_clipMask[i2];
polyClipper.Init(m_verticesOut, i0, i1, i2, m_shader.AVarCount, m_shader.PVarCount);
if ((clipMask & ClipMask.PosX) == ClipMask.PosX)
{
polyClipper.ClipToPlane(-1, 0, 0, 1);
}
if ((clipMask & ClipMask.NegX) == ClipMask.NegX)
{
polyClipper.ClipToPlane(1, 0, 0, 1);
}
if ((clipMask & ClipMask.PosY) == ClipMask.PosY)
{
polyClipper.ClipToPlane(0, -1, 0, 1);
}
if ((clipMask & ClipMask.NegY) == ClipMask.NegY)
{
polyClipper.ClipToPlane(0, 1, 0, 1);
}
if ((clipMask & ClipMask.PosZ) == ClipMask.PosZ)
{
polyClipper.ClipToPlane(0, 0, -1, 1);
}
if ((clipMask & ClipMask.NegZ) == ClipMask.NegZ)
{
polyClipper.ClipToPlane(0, 0, 1, 1);
}
if (polyClipper.IsFullyClipped())
{
m_indicesOut[i] = -1;
m_indicesOut[i + 1] = -1;
m_indicesOut[i + 2] = -1;
continue;
}
List <int> indices = polyClipper.GetIndices();
m_indicesOut[i] = indices[0];
m_indicesOut[i + 1] = indices[1];
m_indicesOut[i + 2] = indices[2];
for (int idx = 3; idx < indices.Count; ++idx)
{
m_indicesOut.Add(indices[0]);
m_indicesOut.Add(indices[idx - 1]);
m_indicesOut.Add(indices[idx]);
}
}
}
private void ClipLines()
{
m_clipMask.Clear();
for (int i = 0; i < m_verticesOut.Count; i++)
{
m_clipMask.Add(0);
}
for (int i = 0; i < m_verticesOut.Count; i++)
{
m_clipMask[i] = GetClipMask(m_verticesOut[i]);
}
for (int i = 0; i < m_indicesOut.Count; i += 2)
{
int index0 = m_indicesOut[i];
int index1 = m_indicesOut[i + 1];
RasterizerVertex v0 = m_verticesOut[index0];
RasterizerVertex v1 = m_verticesOut[index1];
ClipMask clipMask = m_clipMask[index0] | m_clipMask[index1];
LineClipper lineClipper = new LineClipper(v0, v1);
if ((clipMask & ClipMask.PosX) == ClipMask.PosX)
{
lineClipper.clipToPlane(-1, 0, 0, 1);
}
if ((clipMask & ClipMask.NegX) == ClipMask.NegX)
{
lineClipper.clipToPlane(1, 0, 0, 1);
}
if ((clipMask & ClipMask.PosY) == ClipMask.PosY)
{
lineClipper.clipToPlane(0, -1, 0, 1);
}
if ((clipMask & ClipMask.NegY) == ClipMask.NegY)
{
lineClipper.clipToPlane(0, 1, 0, 1);
}
if ((clipMask & ClipMask.PosZ) == ClipMask.PosZ)
{
lineClipper.clipToPlane(0, 0, -1, 1);
}
if ((clipMask & ClipMask.NegZ) == ClipMask.NegZ)
{
lineClipper.clipToPlane(0, 0, 1, 1);
}
if (lineClipper.fullyClipped)
{
m_indicesOut[i] = -1;
m_indicesOut[i + 1] = -1;
continue;
}
if (m_clipMask[index0] > 0)
{
RasterizerVertex newV = Helper.InterpolateVertex(v0, v1, lineClipper.t0, m_shader.AVarCount, m_shader.PVarCount);
m_verticesOut.Add(newV);
m_indicesOut[i] = m_verticesOut.Count - 1;
}
if (m_clipMask[index1] > 0)
{
RasterizerVertex newV = Helper.InterpolateVertex(v0, v1, lineClipper.t1, m_shader.AVarCount, m_shader.PVarCount);
m_verticesOut.Add(newV);
m_indicesOut[i + 1] = m_verticesOut.Count - 1;
}
}
}
