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#include "glcontrolwidget.h"
#include <ntqcursor.h>
#include <ntqtimer.h>
#include <math.h>
GLControlWidget::GLControlWidget( TQWidget *parent, const char *name, TQGLWidget *share, WFlags f )
: TQGLWidget( parent, name, share, f ),
xRot(0),yRot(0),zRot(0),xTrans(0),yTrans(0),zTrans(-10.0),scale(5.0), animation(TRUE), wasAnimated(FALSE), delay( 50 )
{
setCursor( pointingHandCursor );
timer = new TQTimer( this );
connect( timer, TQ_SIGNAL(timeout()), TQ_SLOT(animate()) );
timer->start( delay );
}
void GLControlWidget::transform()
{
glTranslatef( xTrans, yTrans, zTrans );
glScalef( scale, scale, scale );
glRotatef( xRot, 1.0, 0.0, 0.0 );
glRotatef( yRot, 0.0, 1.0, 0.0 );
glRotatef( zRot, 0.0, 0.0, 1.0 );
}
void GLControlWidget::drawText()
{
glPushAttrib( GL_LIGHTING_BIT | GL_TEXTURE_BIT );
glDisable( GL_LIGHTING );
glDisable( GL_TEXTURE_2D );
qglColor( white );
TQString str( "Rendering text in OpenGL is easy with TQt" );
TQFontMetrics fm( font() );
renderText( (width() - fm.width( str )) / 2, 15, str );
TQFont f( "courier", 8 );
TQFontMetrics fmc( f );
qglColor( TQColor("skyblue") );
int x, y, z;
x = (xRot >= 0) ? (int) xRot % 360 : 359 - (TQABS((int) xRot) % 360);
y = (yRot >= 0) ? (int) yRot % 360 : 359 - (TQABS((int) yRot) % 360);
z = (zRot >= 0) ? (int) zRot % 360 : 359 - (TQABS((int) zRot) % 360);
str.sprintf( "Rot X: %03d - Rot Y: %03d - Rot Z: %03d", x, y, z );
renderText( (width() - fmc.width( str )) / 2, height() - 15, str, f );
glPopAttrib();
}
/*!
Set the rotation angle of the object to \e degrees around the X axis.
*/
void GLControlWidget::setXRotation( double degrees )
{
xRot = (GLfloat)fmod(degrees, 360.0);
updateGL();
}
/*!
Set the rotation angle of the object to \e degrees around the Y axis.
*/
void GLControlWidget::setYRotation( double degrees )
{
yRot = (GLfloat)fmod(degrees, 360.0);
updateGL();
}
/*!
Set the rotation angle of the object to \e degrees around the Z axis.
*/
void GLControlWidget::setZRotation( double degrees )
{
zRot = (GLfloat)fmod(degrees, 360.0);
updateGL();
}
void GLControlWidget::setScale( double s )
{
scale = s;
updateGL();
}
void GLControlWidget::setXTrans( double x )
{
xTrans = x;
updateGL();
}
void GLControlWidget::setYTrans( double y )
{
yTrans = y;
updateGL();
}
void GLControlWidget::setZTrans( double z )
{
zTrans = z;
updateGL();
}
void GLControlWidget::setRotationImpulse( double x, double y, double z )
{
setXRotation( xRot + 180*x );
setYRotation( yRot + 180*y );
setZRotation( zRot - 180*z );
}
void GLControlWidget::setTranslationImpulse( double x, double y, double z )
{
setXTrans( xTrans + 2*x );
setYTrans( yTrans - 2*y );
setZTrans( zTrans + 2*z );
}
void GLControlWidget::mousePressEvent( TQMouseEvent *e )
{
e->accept();
oldPos = e->pos();
}
void GLControlWidget::mouseReleaseEvent( TQMouseEvent *e )
{
e->accept();
oldPos = e->pos();
}
void GLControlWidget::mouseMoveEvent( TQMouseEvent *e )
{
e->accept();
double dx = e->x() - oldPos.x();
double dy = e->y() - oldPos.y();
oldPos = e->pos();
double rx = dx / width();
double ry = dy / height();
if ( e->state() == LeftButton )
setRotationImpulse( ry, rx, 0 );
else if ( e->state() == RightButton )
setRotationImpulse( ry, 0, rx );
else if ( e->state() == MidButton )
setTranslationImpulse( rx, ry, 0 );
else if ( e->state() == ( LeftButton | RightButton ) )
setTranslationImpulse( rx, 0, ry );
}
void GLControlWidget::wheelEvent( TQWheelEvent *e )
{
e->accept();
if ( scale <= ( (double)e->delta() / 1000 ) )
return;
setScale( scale - ( (double)e->delta() / 1000 ));
}
void GLControlWidget::mouseDoubleClickEvent( TQMouseEvent * )
{
if ( delay <= 0 )
return;
animation = !animation;
if ( animation )
timer->start( delay );
else
timer->stop();
}
void GLControlWidget::showEvent( TQShowEvent *e )
{
if ( wasAnimated && !timer->isActive() )
timer->start( delay );
TQGLWidget::showEvent( e );
}
void GLControlWidget::hideEvent( TQHideEvent *e )
{
wasAnimated = timer->isActive();
timer->stop();
TQGLWidget::hideEvent( e );
}
void GLControlWidget::animate()
{
}
void GLControlWidget::setAnimationDelay( int ms )
{
timer->stop();
delay = ms;
if ( animation ) {
wasAnimated = TRUE;
timer->start( delay );
}
}
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