91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
|
|
#include "macros.h"
|
|
#include "transform.h"
|
|
|
|
|
|
TRANSFORM& TRANSFORM::operator=( const TRANSFORM& aTransform )
|
|
{
|
|
if( this == &aTransform ) // Check for self assingnemt;
|
|
return *this;
|
|
|
|
x1 = aTransform.x1;
|
|
y1 = aTransform.y1;
|
|
x2 = aTransform.x2;
|
|
y2 = aTransform.y2;
|
|
return *this;
|
|
}
|
|
|
|
|
|
bool TRANSFORM::operator==( const TRANSFORM& aTransform ) const
|
|
{
|
|
return ( x1 == aTransform.x1 &&
|
|
y1 == aTransform.y1 &&
|
|
x2 == aTransform.x2 &&
|
|
y2 == aTransform.y2 );
|
|
}
|
|
|
|
|
|
wxPoint TRANSFORM::TransformCoordinate( const wxPoint& aPoint ) const
|
|
{
|
|
return wxPoint( ( x1 * aPoint.x ) + ( y1 * aPoint.y ),
|
|
( x2 * aPoint.x ) + ( y2 * aPoint.y ) );
|
|
}
|
|
|
|
|
|
bool TRANSFORM::MapAngles( int* aAngle1, int* aAngle2 ) const
|
|
{
|
|
wxCHECK_MSG( aAngle1 != NULL && aAngle2 != NULL, false,
|
|
wxT( "Cannot map NULL point angles." ) );
|
|
|
|
int Angle, Delta;
|
|
double x, y, t;
|
|
bool swap = false;
|
|
|
|
Delta = *aAngle2 - *aAngle1;
|
|
if( Delta >= 1800 )
|
|
{
|
|
*aAngle1 -= 1;
|
|
*aAngle2 += 1;
|
|
}
|
|
|
|
x = cos( *aAngle1 * M_PI / 1800.0 );
|
|
y = sin( *aAngle1 * M_PI / 1800.0 );
|
|
t = x * x1 + y * y1;
|
|
y = x * x2 + y * y2;
|
|
x = t;
|
|
*aAngle1 = (int) ( atan2( y, x ) * 1800.0 / M_PI + 0.5 );
|
|
|
|
x = cos( *aAngle2 * M_PI / 1800.0 );
|
|
y = sin( *aAngle2 * M_PI / 1800.0 );
|
|
t = x * x1 + y * y1;
|
|
y = x * x2 + y * y2;
|
|
x = t;
|
|
*aAngle2 = (int) ( atan2( y, x ) * 1800.0 / M_PI + 0.5 );
|
|
|
|
NORMALIZE_ANGLE_POS( *aAngle1 );
|
|
NORMALIZE_ANGLE_POS( *aAngle2 );
|
|
if( *aAngle2 < *aAngle1 )
|
|
*aAngle2 += 3600;
|
|
|
|
if( *aAngle2 - *aAngle1 > 1800 ) /* Need to swap the two angles. */
|
|
{
|
|
Angle = (*aAngle1);
|
|
*aAngle1 = (*aAngle2);
|
|
*aAngle2 = Angle;
|
|
|
|
NORMALIZE_ANGLE_POS( *aAngle1 );
|
|
NORMALIZE_ANGLE_POS( *aAngle2 );
|
|
if( *aAngle2 < *aAngle1 )
|
|
*aAngle2 += 3600;
|
|
swap = true;
|
|
}
|
|
|
|
if( Delta >= 1800 )
|
|
{
|
|
*aAngle1 += 1;
|
|
*aAngle2 -= 1;
|
|
}
|
|
|
|
return swap;
|
|
}
|