a base for geometry operations
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5366 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
parent
4765d335f6
commit
07cdd02764
311
src/common/geometry.cpp
Normal file
311
src/common/geometry.cpp
Normal file
@ -0,0 +1,311 @@
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
// Name: geometry.h
|
||||
// Purpose: Common Geometry Classes
|
||||
// Author: Stefan Csomor
|
||||
// Modified by:
|
||||
// Created: 08/05/99
|
||||
// RCS-ID:
|
||||
// Copyright: (c)
|
||||
// Licence: wxWindows licence
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#ifdef __GNUG__
|
||||
#pragma interface "geometry.h"
|
||||
#endif
|
||||
|
||||
|
||||
// For compilers that support precompilation, includes "wx.h".
|
||||
#include "wx/wxprec.h"
|
||||
|
||||
|
||||
#ifdef __BORLANDC__
|
||||
#pragma hdrstop
|
||||
#endif
|
||||
|
||||
#include "wx/log.h"
|
||||
#include <string.h>
|
||||
|
||||
|
||||
#include "wx/geometry.h"
|
||||
#include "wx/datstrm.h"
|
||||
|
||||
//
|
||||
// wxPoint2D
|
||||
//
|
||||
|
||||
//
|
||||
// wxRect2D
|
||||
//
|
||||
|
||||
// wxDouble version
|
||||
|
||||
// for the following calculations always remember
|
||||
// that the right and bottom edges are not part of a rect
|
||||
|
||||
bool wxRect2DDouble::Intersects( const wxRect2DDouble &rect ) const
|
||||
{
|
||||
wxDouble left,right,bottom,top ;
|
||||
left = wxMax ( m_x , rect.m_x ) ;
|
||||
right = wxMin ( m_x+m_width, rect.m_x + rect.m_width ) ;
|
||||
top = wxMax ( m_y , rect.m_y ) ;
|
||||
bottom = wxMin ( m_y+m_height, rect.m_y + rect.m_height ) ;
|
||||
|
||||
if ( left < right && top < bottom )
|
||||
{
|
||||
return TRUE ;
|
||||
}
|
||||
return FALSE ;
|
||||
}
|
||||
|
||||
void wxRect2DDouble::Intersect( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest )
|
||||
{
|
||||
wxDouble left,right,bottom,top ;
|
||||
left = wxMax ( src1.m_x , src2.m_x ) ;
|
||||
right = wxMin ( src1.m_x+src1.m_width, src2.m_x + src2.m_width ) ;
|
||||
top = wxMax ( src1.m_y , src2.m_y ) ;
|
||||
bottom = wxMin ( src1.m_y+src1.m_height, src2.m_y + src2.m_height ) ;
|
||||
|
||||
if ( left < right && top < bottom )
|
||||
{
|
||||
dest->m_x = left ;
|
||||
dest->m_y = top ;
|
||||
dest->m_width = right - left ;
|
||||
dest->m_height = bottom - top ;
|
||||
}
|
||||
else
|
||||
{
|
||||
dest->m_width = dest->m_height = 0 ;
|
||||
}
|
||||
}
|
||||
|
||||
void wxRect2DDouble::Union( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest )
|
||||
{
|
||||
wxDouble left,right,bottom,top ;
|
||||
|
||||
left = wxMin ( src1.m_x , src2.m_x ) ;
|
||||
right = wxMax ( src1.m_x+src1.m_width, src2.m_x + src2.m_width ) ;
|
||||
top = wxMin ( src1.m_y , src2.m_y ) ;
|
||||
bottom = wxMax ( src1.m_y+src1.m_height, src2.m_y + src2.m_height ) ;
|
||||
|
||||
dest->m_x = left ;
|
||||
dest->m_y = top ;
|
||||
dest->m_width = right - left ;
|
||||
dest->m_height = bottom - top ;
|
||||
}
|
||||
|
||||
void wxRect2DDouble::Union( const wxPoint2DDouble &pt )
|
||||
{
|
||||
wxDouble x = pt.m_x ;
|
||||
wxDouble y = pt.m_y ;
|
||||
|
||||
if ( x < m_x )
|
||||
{
|
||||
SetLeft( x ) ;
|
||||
}
|
||||
else if ( x < m_x + m_width )
|
||||
{
|
||||
// contained
|
||||
}
|
||||
else
|
||||
{
|
||||
SetRight( x ) ;
|
||||
}
|
||||
|
||||
if ( y < m_y )
|
||||
{
|
||||
SetTop( y ) ;
|
||||
}
|
||||
else if ( y < m_y + m_height )
|
||||
{
|
||||
// contained
|
||||
}
|
||||
else
|
||||
{
|
||||
SetBottom( y ) ;
|
||||
}
|
||||
}
|
||||
|
||||
void wxRect2DDouble::ConstrainTo( const wxRect2DDouble &rect )
|
||||
{
|
||||
if ( GetLeft() < rect.GetLeft() )
|
||||
SetLeft( rect.GetLeft() ) ;
|
||||
|
||||
if ( GetRight() > rect.GetRight() )
|
||||
SetRight( rect.GetRight() ) ;
|
||||
|
||||
if ( GetBottom() > rect.GetBottom() )
|
||||
SetBottom( rect.GetBottom() ) ;
|
||||
|
||||
if ( GetTop() < rect.GetTop() )
|
||||
SetTop( rect.GetTop() ) ;
|
||||
}
|
||||
|
||||
// integer version
|
||||
|
||||
// for the following calculations always remember
|
||||
// that the right and bottom edges are not part of a rect
|
||||
|
||||
// wxPoint2D
|
||||
|
||||
void wxPoint2DInt::WriteTo( wxDataOutputStream &stream ) const
|
||||
{
|
||||
stream.Write32( m_x ) ;
|
||||
stream.Write32( m_y ) ;
|
||||
}
|
||||
|
||||
void wxPoint2DInt::ReadFrom( wxDataInputStream &stream )
|
||||
{
|
||||
m_x = stream.Read32() ;
|
||||
m_y = stream.Read32() ;
|
||||
}
|
||||
|
||||
wxDouble wxPoint2DInt::GetVectorAngle()
|
||||
{
|
||||
if ( m_x == 0 )
|
||||
{
|
||||
if ( m_y >= 0 )
|
||||
return 90 ;
|
||||
else
|
||||
return 270 ;
|
||||
}
|
||||
if ( m_y == 0 )
|
||||
{
|
||||
if ( m_x >= 0 )
|
||||
return 0 ;
|
||||
else
|
||||
return 180 ;
|
||||
}
|
||||
wxDouble deg = atan2( m_y , m_x ) * 180 / 3.14159265359 ;
|
||||
if ( deg < 0 )
|
||||
{
|
||||
deg += 360 ;
|
||||
}
|
||||
return deg ;
|
||||
}
|
||||
|
||||
|
||||
// wxRect2D
|
||||
|
||||
bool wxRect2DInt::Intersects( const wxRect2DInt &rect ) const
|
||||
{
|
||||
wxInt32 left,right,bottom,top ;
|
||||
left = wxMax ( m_x , rect.m_x ) ;
|
||||
right = wxMin ( m_x+m_width, rect.m_x + rect.m_width ) ;
|
||||
top = wxMax ( m_y , rect.m_y ) ;
|
||||
bottom = wxMin ( m_y+m_height, rect.m_y + rect.m_height ) ;
|
||||
|
||||
if ( left < right && top < bottom )
|
||||
{
|
||||
return TRUE ;
|
||||
}
|
||||
return FALSE ;
|
||||
}
|
||||
|
||||
void wxRect2DInt::Intersect( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest )
|
||||
{
|
||||
wxInt32 left,right,bottom,top ;
|
||||
left = wxMax ( src1.m_x , src2.m_x ) ;
|
||||
right = wxMin ( src1.m_x+src1.m_width, src2.m_x + src2.m_width ) ;
|
||||
top = wxMax ( src1.m_y , src2.m_y ) ;
|
||||
bottom = wxMin ( src1.m_y+src1.m_height, src2.m_y + src2.m_height ) ;
|
||||
|
||||
if ( left < right && top < bottom )
|
||||
{
|
||||
dest->m_x = left ;
|
||||
dest->m_y = top ;
|
||||
dest->m_width = right - left ;
|
||||
dest->m_height = bottom - top ;
|
||||
}
|
||||
else
|
||||
{
|
||||
dest->m_width = dest->m_height = 0 ;
|
||||
}
|
||||
}
|
||||
|
||||
void wxRect2DInt::Union( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest )
|
||||
{
|
||||
wxInt32 left,right,bottom,top ;
|
||||
|
||||
left = wxMin ( src1.m_x , src2.m_x ) ;
|
||||
right = wxMax ( src1.m_x+src1.m_width, src2.m_x + src2.m_width ) ;
|
||||
top = wxMin ( src1.m_y , src2.m_y ) ;
|
||||
bottom = wxMax ( src1.m_y+src1.m_height, src2.m_y + src2.m_height ) ;
|
||||
|
||||
dest->m_x = left ;
|
||||
dest->m_y = top ;
|
||||
dest->m_width = right - left ;
|
||||
dest->m_height = bottom - top ;
|
||||
}
|
||||
|
||||
void wxRect2DInt::Union( const wxPoint2DInt &pt )
|
||||
{
|
||||
wxInt32 x = pt.m_x ;
|
||||
wxInt32 y = pt.m_y ;
|
||||
|
||||
if ( x < m_x )
|
||||
{
|
||||
SetLeft( x ) ;
|
||||
}
|
||||
else if ( x < m_x + m_width )
|
||||
{
|
||||
// contained
|
||||
}
|
||||
else
|
||||
{
|
||||
SetRight( x ) ;
|
||||
}
|
||||
|
||||
if ( y < m_y )
|
||||
{
|
||||
SetTop( y ) ;
|
||||
}
|
||||
else if ( y < m_y + m_height )
|
||||
{
|
||||
// contained
|
||||
}
|
||||
else
|
||||
{
|
||||
SetBottom( y ) ;
|
||||
}
|
||||
}
|
||||
|
||||
void wxRect2DInt::ConstrainTo( const wxRect2DInt &rect )
|
||||
{
|
||||
if ( GetLeft() < rect.GetLeft() )
|
||||
SetLeft( rect.GetLeft() ) ;
|
||||
|
||||
if ( GetRight() > rect.GetRight() )
|
||||
SetRight( rect.GetRight() ) ;
|
||||
|
||||
if ( GetBottom() > rect.GetBottom() )
|
||||
SetBottom( rect.GetBottom() ) ;
|
||||
|
||||
if ( GetTop() < rect.GetTop() )
|
||||
SetTop( rect.GetTop() ) ;
|
||||
}
|
||||
|
||||
wxRect2DInt& wxRect2DInt::operator=( const wxRect2DInt &r )
|
||||
{
|
||||
m_x = r.m_x ;
|
||||
m_y = r.m_y ;
|
||||
m_width = r.m_width ;
|
||||
m_height = r.m_height ;
|
||||
return *this ;
|
||||
}
|
||||
|
||||
void wxRect2DInt::WriteTo( wxDataOutputStream &stream ) const
|
||||
{
|
||||
stream.Write32( m_x ) ;
|
||||
stream.Write32( m_y ) ;
|
||||
stream.Write32( m_width ) ;
|
||||
stream.Write32( m_height ) ;
|
||||
}
|
||||
|
||||
void wxRect2DInt::ReadFrom( wxDataInputStream &stream )
|
||||
{
|
||||
m_x = stream.Read32() ;
|
||||
m_y = stream.Read32() ;
|
||||
m_width = stream.Read32() ;
|
||||
m_height = stream.Read32() ;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user