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//-----------------------------------------------------------------------------
// Copyright (C) 2001 Radical Entertainment Ltd. All rights reserved.
//
// marquee.cpp
//
// Description:
//
// Modification History:
// + Created Jun 14, 2001 -- bkusy
//-----------------------------------------------------------------------------
//----------------------------------------
// System Includes
//----------------------------------------
#include <windows.h>
#include <assert.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glaux.h>
//----------------------------------------
// Project Includes
//----------------------------------------
#include "overlaymarquee.h"
//----------------------------------------
// Forward References
//----------------------------------------
//----------------------------------------
// Define Owning Namespace
//----------------------------------------
namespace GLObj {
//----------------------------------------
// Constants, Typedefs and Statics
//----------------------------------------
//-----------------------------------------------------------------------------
// M a r q u e e
//
// Synopsis: Constructor
//
// Parameters: NONE
//
// Returns: NOTHING
//
// Constraints: NONE
//
//-----------------------------------------------------------------------------
OverlayMarquee::OverlayMarquee() :
m_xStart( 0 ),
m_yStart( 0 ),
m_xEnd( 0 ),
m_yEnd( 0 )
{
}
//-----------------------------------------------------------------------------
// ~ M a r q u e e
//
// Synopsis: Destructor
//
// Parameters: NONE
//
// Returns: NOTHING
//
// Constraints: NONE
//
//-----------------------------------------------------------------------------
OverlayMarquee::~OverlayMarquee()
{
}
//-----------------------------------------------------------------------------
// B e g i n
//
// Synopsis:
//
// Parameters: NONE
//
// Returns: NOTHING
//
// Constraints: NONE
//
//-----------------------------------------------------------------------------
void OverlayMarquee::Begin( M3dView& view, short xStart, short yStart )
{
m_View = view;
m_xStart = xStart;
m_yStart = yStart;
m_View.beginGL();
m_View.beginOverlayDrawing();
}
//-----------------------------------------------------------------------------
// D r a w
//
// Synopsis: Draw a marquee with the given coordinates.
//
// Parameters: NONE
//
// Returns: NOTHING
//
// Constraints: NONE
//
//-----------------------------------------------------------------------------
void OverlayMarquee::Draw( short xEnd, short yEnd )
{
glPushAttrib( GL_CURRENT_BIT | GL_LINE_BIT | GL_POLYGON_BIT );
m_xEnd = xEnd;
m_yEnd = yEnd;
//
// Clearing the overlay plane doesn't seem to work, but swapping buffers does
// so we'll use that instead. You've gotta luv Maya bugs -- embrace them
// don't squash them.
//
m_View.clearOverlayPlane();
SwapBuffers( m_View.deviceContext() );
//
// Setup the orthographic projection matrix.
//
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
gluOrtho2D( 0.0, (GLdouble)m_View.portWidth(), 0.0, (GLdouble)m_View.portHeight() );
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
glTranslatef( 0.375, 0.375, 0.0 );
//
// Retrieve GL State.
//
float lineWidth;
unsigned char lineSmoothedFlag;
glGetFloatv( GL_LINE_WIDTH, &lineWidth );
glGetBooleanv( GL_LINE_SMOOTH, &lineSmoothedFlag );
//
// Set line style.
//
glLineStipple( 1, 0x5555 );
glLineWidth( 1.0 );
glEnable( GL_LINE_STIPPLE );
glEnable( GL_LINE_SMOOTH );
glIndexi( 2 );
//
// Draw marquee.
//
glBegin( GL_LINES );
glVertex2i( m_xStart, m_yEnd ); // Left Side.
glVertex2i( m_xStart, m_yStart );
glVertex2i( m_xStart, m_yStart );// Top
glVertex2i( m_xEnd, m_yStart );
glVertex2i( m_xEnd, m_yStart ); // Right Side.
glVertex2i( m_xEnd, m_yEnd );
glVertex2i( m_xEnd, m_yEnd ); // Bottom.
glVertex2i( m_xStart, m_yEnd );
glEnd();
//
// Don't swap the display buffers. A bug in Maya causes the display to be
// cleared -- making the flicker worse.
//
//SwapBuffers( m_View.deviceContext() );
//
// Instead just flush the GL buffers.
//
glFlush();
//
// Restore GL state.
glLineWidth( lineWidth );
if ( !lineSmoothedFlag ) glDisable( GL_LINE_SMOOTH );
glDisable( GL_LINE_STIPPLE );
glPopAttrib();
}
//-----------------------------------------------------------------------------
// R e d r a w
//
// Synopsis: Draw a marquee with the last given coordinates.
//
// Parameters: NONE
//
// Returns: NOTHING
//
// Constraints: NONE
//
//-----------------------------------------------------------------------------
void OverlayMarquee::Redraw()
{
Draw( m_xEnd, m_yEnd );
}
void OverlayMarquee::End()
{
m_View.endOverlayDrawing();
m_View.endGL();
//
// Use the Maya bug to get rid of any drawing we have done.
//
SwapBuffers( m_View.deviceContext() );
}
} // namespace GLObj
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