365 lines
8.1 KiB
C++
365 lines
8.1 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/geometry.cpp
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// Purpose: Common Geometry Classes
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// Author: Stefan Csomor
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// Modified by:
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// Created: 08/05/99
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// RCS-ID:
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// Copyright: (c) 1999 Stefan Csomor
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_GEOMETRY
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#include "wx/geometry.h"
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#ifndef WX_PRECOMP
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#include "wx/log.h"
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#endif
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#include <string.h>
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#include "wx/datstrm.h"
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//
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// wxPoint2D
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//
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//
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// wxRect2D
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//
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// wxDouble version
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// for the following calculations always remember
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// that the right and bottom edges are not part of a rect
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bool wxRect2DDouble::Intersects( const wxRect2DDouble &rect ) const
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{
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wxDouble left,right,bottom,top;
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left = wxMax ( m_x , rect.m_x );
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right = wxMin ( m_x+m_width, rect.m_x + rect.m_width );
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top = wxMax ( m_y , rect.m_y );
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bottom = wxMin ( m_y+m_height, rect.m_y + rect.m_height );
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if ( left < right && top < bottom )
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{
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return true;
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}
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return false;
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}
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void wxRect2DDouble::Intersect( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest )
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{
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wxDouble left,right,bottom,top;
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left = wxMax ( src1.m_x , src2.m_x );
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right = wxMin ( src1.m_x+src1.m_width, src2.m_x + src2.m_width );
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top = wxMax ( src1.m_y , src2.m_y );
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bottom = wxMin ( src1.m_y+src1.m_height, src2.m_y + src2.m_height );
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if ( left < right && top < bottom )
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{
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dest->m_x = left;
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dest->m_y = top;
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dest->m_width = right - left;
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dest->m_height = bottom - top;
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}
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else
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{
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dest->m_width = dest->m_height = 0;
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}
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}
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void wxRect2DDouble::Union( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest )
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{
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wxDouble left,right,bottom,top;
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left = wxMin ( src1.m_x , src2.m_x );
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right = wxMax ( src1.m_x+src1.m_width, src2.m_x + src2.m_width );
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top = wxMin ( src1.m_y , src2.m_y );
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bottom = wxMax ( src1.m_y+src1.m_height, src2.m_y + src2.m_height );
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dest->m_x = left;
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dest->m_y = top;
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dest->m_width = right - left;
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dest->m_height = bottom - top;
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}
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void wxRect2DDouble::Union( const wxPoint2DDouble &pt )
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{
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wxDouble x = pt.m_x;
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wxDouble y = pt.m_y;
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if ( x < m_x )
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{
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SetLeft( x );
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}
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else if ( x < m_x + m_width )
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{
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// contained
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}
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else
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{
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SetRight( x );
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}
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if ( y < m_y )
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{
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SetTop( y );
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}
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else if ( y < m_y + m_height )
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{
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// contained
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}
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else
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{
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SetBottom( y );
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}
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}
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void wxRect2DDouble::ConstrainTo( const wxRect2DDouble &rect )
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{
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if ( GetLeft() < rect.GetLeft() )
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SetLeft( rect.GetLeft() );
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if ( GetRight() > rect.GetRight() )
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SetRight( rect.GetRight() );
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if ( GetBottom() > rect.GetBottom() )
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SetBottom( rect.GetBottom() );
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if ( GetTop() < rect.GetTop() )
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SetTop( rect.GetTop() );
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}
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wxRect2DDouble& wxRect2DDouble::operator=( const wxRect2DDouble &r )
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{
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m_x = r.m_x;
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m_y = r.m_y;
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m_width = r.m_width;
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m_height = r.m_height;
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return *this;
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}
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// integer version
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// for the following calculations always remember
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// that the right and bottom edges are not part of a rect
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// wxPoint2D
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#if wxUSE_STREAMS
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void wxPoint2DInt::WriteTo( wxDataOutputStream &stream ) const
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{
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stream.Write32( m_x );
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stream.Write32( m_y );
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}
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void wxPoint2DInt::ReadFrom( wxDataInputStream &stream )
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{
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m_x = stream.Read32();
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m_y = stream.Read32();
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}
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#endif // wxUSE_STREAMS
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wxDouble wxPoint2DInt::GetVectorAngle() const
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{
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if ( m_x == 0 )
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{
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if ( m_y >= 0 )
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return 90;
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else
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return 270;
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}
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if ( m_y == 0 )
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{
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if ( m_x >= 0 )
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return 0;
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else
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return 180;
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}
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// casts needed for MIPSpro compiler under SGI
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wxDouble deg = atan2( (double)m_y , (double)m_x ) * 180 / M_PI;
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if ( deg < 0 )
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{
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deg += 360;
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}
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return deg;
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}
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void wxPoint2DInt::SetVectorAngle( wxDouble degrees )
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{
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wxDouble length = GetVectorLength();
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m_x = (int)(length * cos( degrees / 180 * M_PI ));
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m_y = (int)(length * sin( degrees / 180 * M_PI ));
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}
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wxDouble wxPoint2DDouble::GetVectorAngle() const
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{
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if ( wxIsNullDouble(m_x) )
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{
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if ( m_y >= 0 )
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return 90;
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else
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return 270;
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}
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if ( wxIsNullDouble(m_y) )
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{
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if ( m_x >= 0 )
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return 0;
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else
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return 180;
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}
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wxDouble deg = atan2( m_y , m_x ) * 180 / M_PI;
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if ( deg < 0 )
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{
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deg += 360;
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}
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return deg;
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}
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void wxPoint2DDouble::SetVectorAngle( wxDouble degrees )
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{
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wxDouble length = GetVectorLength();
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m_x = length * cos( degrees / 180 * M_PI );
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m_y = length * sin( degrees / 180 * M_PI );
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}
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// wxRect2D
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bool wxRect2DInt::Intersects( const wxRect2DInt &rect ) const
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{
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wxInt32 left,right,bottom,top;
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left = wxMax ( m_x , rect.m_x );
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right = wxMin ( m_x+m_width, rect.m_x + rect.m_width );
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top = wxMax ( m_y , rect.m_y );
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bottom = wxMin ( m_y+m_height, rect.m_y + rect.m_height );
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if ( left < right && top < bottom )
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{
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return true;
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}
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return false;
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}
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void wxRect2DInt::Intersect( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest )
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{
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wxInt32 left,right,bottom,top;
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left = wxMax ( src1.m_x , src2.m_x );
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right = wxMin ( src1.m_x+src1.m_width, src2.m_x + src2.m_width );
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top = wxMax ( src1.m_y , src2.m_y );
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bottom = wxMin ( src1.m_y+src1.m_height, src2.m_y + src2.m_height );
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if ( left < right && top < bottom )
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{
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dest->m_x = left;
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dest->m_y = top;
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dest->m_width = right - left;
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dest->m_height = bottom - top;
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}
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else
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{
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dest->m_width = dest->m_height = 0;
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}
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}
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void wxRect2DInt::Union( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest )
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{
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wxInt32 left,right,bottom,top;
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left = wxMin ( src1.m_x , src2.m_x );
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right = wxMax ( src1.m_x+src1.m_width, src2.m_x + src2.m_width );
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top = wxMin ( src1.m_y , src2.m_y );
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bottom = wxMax ( src1.m_y+src1.m_height, src2.m_y + src2.m_height );
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dest->m_x = left;
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dest->m_y = top;
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dest->m_width = right - left;
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dest->m_height = bottom - top;
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}
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void wxRect2DInt::Union( const wxPoint2DInt &pt )
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{
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wxInt32 x = pt.m_x;
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wxInt32 y = pt.m_y;
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if ( x < m_x )
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{
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SetLeft( x );
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}
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else if ( x < m_x + m_width )
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{
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// contained
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}
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else
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{
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SetRight( x );
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}
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if ( y < m_y )
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{
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SetTop( y );
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}
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else if ( y < m_y + m_height )
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{
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// contained
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}
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else
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{
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SetBottom( y );
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}
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}
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void wxRect2DInt::ConstrainTo( const wxRect2DInt &rect )
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{
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if ( GetLeft() < rect.GetLeft() )
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SetLeft( rect.GetLeft() );
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if ( GetRight() > rect.GetRight() )
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SetRight( rect.GetRight() );
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if ( GetBottom() > rect.GetBottom() )
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SetBottom( rect.GetBottom() );
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if ( GetTop() < rect.GetTop() )
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SetTop( rect.GetTop() );
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}
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wxRect2DInt& wxRect2DInt::operator=( const wxRect2DInt &r )
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{
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m_x = r.m_x;
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m_y = r.m_y;
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m_width = r.m_width;
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m_height = r.m_height;
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return *this;
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}
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#if wxUSE_STREAMS
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void wxRect2DInt::WriteTo( wxDataOutputStream &stream ) const
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{
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stream.Write32( m_x );
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stream.Write32( m_y );
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stream.Write32( m_width );
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stream.Write32( m_height );
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}
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void wxRect2DInt::ReadFrom( wxDataInputStream &stream )
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{
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m_x = stream.Read32();
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m_y = stream.Read32();
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m_width = stream.Read32();
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m_height = stream.Read32();
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}
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#endif // wxUSE_STREAMS
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#endif // wxUSE_GEOMETRY
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