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Even better way to draw solid arcs. Fixes overlap issues at abutting arcs.

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This commit is contained in:
Brian Todoroff
2009-03-13 00:30:19 +00:00
parent a035c76101
commit a60756d308
1 changed files with 10 additions and 5 deletions
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15
Library/MeterRoundLine.cpp
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@@ -141,14 +141,19 @@ bool CMeterRoundLine::Draw()
//path.AddEllipse(REAL(cx - m_LineStart), REAL(cy - m_LineStart), REAL(m_LineStart * 2), REAL(m_LineStart * 2));
//graphics.SetClip(&path, CombineModeExclude);
//Draw an arc with a pen m_Width wide
REAL lineWidth = (REAL)m_LineLength - (REAL)m_LineStart;
Pen pen(m_LineColor, lineWidth);
// Calculate the end point of the line
double angle = m_RotationAngle * m_Value + m_StartAngle;
REAL adjLineLength = m_LineLength - (lineWidth/2);
graphics.DrawArc(&pen,(REAL)(cx - adjLineLength), (REAL)(cy - adjLineLength), (REAL)(adjLineLength * 2.0), (REAL)(adjLineLength * 2.0), (REAL)(m_StartAngle * 180.0 / PI), (REAL)(m_RotationAngle * m_Value * 180.0 / PI));
SolidBrush solidBrush(m_LineColor);
//Create a path to surround the arc
GraphicsPath path;
path.AddArc((REAL)(cx - m_LineStart), (REAL)(cy - m_LineStart), (REAL)(m_LineStart * 2.0), (REAL)(m_LineStart * 2.0), (REAL)(m_StartAngle * 180.0 / PI), (REAL)(m_RotationAngle * m_Value * 180.0 / PI));
path.AddLine((REAL)m_LineStart*(REAL)cos(m_StartAngle)+cx,(REAL)m_LineStart*(REAL)sin(m_StartAngle)+cy,(REAL)m_LineLength*(REAL)cos(m_StartAngle)+cx,(REAL)m_LineLength*(REAL)sin(m_StartAngle)+cy);
path.AddArc((REAL)(cx - m_LineLength), (REAL)(cy - m_LineLength), (REAL)(m_LineLength * 2.0), (REAL)(m_LineLength * 2.0), (REAL)(m_StartAngle * 180.0 / PI), (REAL)(m_RotationAngle * m_Value * 180.0 / PI));
path.AddLine((REAL)m_LineLength*(REAL)cos(angle)+cx,(REAL)m_LineLength*(REAL)sin(angle)+cy,(REAL)m_LineStart*(REAL)cos(angle)+cx,(REAL)m_LineStart*(REAL)sin(angle)+cy);
graphics.FillPath(&solidBrush,&path);
}
else
{