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Draw closer approx to dashed circles/arcs

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Segments divided into smaller parts to achieve the curve

Fixes https://gitlab.com/kicad/code/kicad/-/issues/18335
This commit is contained in:
Dhinesh 2024-08-14 23:46:31 +05:30 committed by Seth Hillbrand
parent 758a7cbeee
commit d9cf5e8278
1 changed files with 57 additions and 11 deletions

68
common/stroke_params.cpp
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@ -170,22 +170,68 @@ void STROKE_PARAMS::Stroke( const SHAPE* aShape, LINE_STYLE aLineStyle, int aWid
wxASSERT( startAngle < arcEndAngle );
EDA_ANGLE angleIncrementInRadians = EDA_ANGLE( M_PI / ANGLE_360 );
for( size_t i = 0; i < 10000 && startAngle < arcEndAngle; ++i )
{
EDA_ANGLE theta = ANGLE_360 * strokes[ i % wrapAround ] / C;
EDA_ANGLE endAngle = std::min( startAngle + theta, arcEndAngle );
EDA_ANGLE theta = ANGLE_360 * strokes[ i % wrapAround ] / C;
EDA_ANGLE endAngle = std::min( startAngle + theta, arcEndAngle );
if( i % 2 == 0 )
{
VECTOR2I a( center.x + KiROUND( r * startAngle.Cos() ),
center.y + KiROUND( r * startAngle.Sin() ) );
VECTOR2I b( center.x + KiROUND( r * endAngle.Cos() ),
center.y + KiROUND( r * endAngle.Sin() ) );
if( i % 2 == 0 )
{
// Calculate the remaining arc length from the current startAngle to the arcEndAngle
EDA_ANGLE remainingArcLength = arcEndAngle - startAngle;
aStroker( a, b );
}
if( remainingArcLength < theta )
{
// If the remaining arc length is less than the current segment length (theta),
// we need to adjust the segment length to fit within the remaining arc.
startAngle = endAngle;
// Check if the remaining arc length is greater than the gap length (strokes[1]).
// strokes[1] represents the gap between dashes/dots in the pattern.
if( remainingArcLength > ( ANGLE_360 * strokes[1] / C ) )
{
// If the remaining arc length is greater than the gap length,
// adjust the segment length (theta) to leave space for the final gap.
theta = remainingArcLength - ( ANGLE_360 * strokes[1] / C );
// Ensure that the adjusted segment length does not exceed the arcEndAngle.
endAngle = startAngle + theta;
}
else
{
// If the remaining arc length is less than or equal to the gap length,
// simply set the endAngle to the arcEndAngle to complete the arc.
endAngle = arcEndAngle;
}
}
if( aLineStyle == LINE_STYLE::DASH
|| (( aLineStyle == LINE_STYLE::DASHDOT || aLineStyle == LINE_STYLE::DASHDOTDOT ) && i % wrapAround == 0))
{
for( EDA_ANGLE currentAngle = startAngle; currentAngle < endAngle;
currentAngle += angleIncrementInRadians )
{
VECTOR2I a( center.x + KiROUND( r * currentAngle.Cos() ),
center.y + KiROUND( r * currentAngle.Sin() ) );
VECTOR2I b( center.x + KiROUND( r * ( currentAngle + angleIncrementInRadians ).Cos() ),
center.y + KiROUND( r * ( currentAngle + angleIncrementInRadians ).Sin() ) );
aStroker( a, b ); // Draw the segment as an arc
}
}
else
{
VECTOR2I a( center.x + KiROUND( r * startAngle.Cos() ),
center.y + KiROUND( r * startAngle.Sin() ) );
VECTOR2I b( center.x + KiROUND( r * endAngle.Cos() ),
center.y + KiROUND( r * endAngle.Sin() ) );
aStroker( a, b );
}
}
startAngle = endAngle;
}
break;