void LineBrush::BrushMove( const Point source, const Point target , int brushsize)
{
ImpressionistDoc* pDoc = GetDocument();
ImpressionistUI* dlg=pDoc->m_pUI;
if ( pDoc == NULL ) {
printf( "PointBrush::BrushMove document is NULL\n" );
return;
}
int half_size;
glGetIntegerv(GL_POINT_SIZE, &half_size);
half_size /= 2;
// dirty patch
if (brushsize > 0) {
glPointSize(brushsize);
half_size = brushsize / 2;
if (half_size == 0) half_size = 1;
} else {
// then it's normal paint
// should set color according to original
SetColor( source );
}
int width = ceil(pDoc->getWidth() / 2.0); //make sure it works when width is 1
int angle = pDoc->getAngle();
float m_sin = sin(2.0f * M_PI * angle / 360);
float m_cos = cos(2.0f * M_PI * angle / 360);
float depth = dlg->m_paintView->current_depth;
glBegin( GL_POLYGON );
if (pDoc->m_pUI->m_EdgeClipButton->value())
{
int nLength;
int pLength;
for (nLength = 0; nLength <= half_size; nLength++)
{
if (pDoc->isEdge(target.x - (int)(nLength * m_cos), target.y - (int)(nLength * m_sin)))
{
break;
}
}
for (pLength = 0; pLength <= half_size; pLength++)
{
if (pDoc->isEdge(target.x + (int)(pLength * m_cos), target.y + (int)(pLength * m_sin)))
{
break;
}
}
glVertex2d( target.x - nLength * m_cos - width * m_sin, target.y - nLength * m_sin + width * m_cos);
glVertex2d( target.x + pLength * m_cos - width * m_sin, target.y + pLength * m_sin + width * m_cos);
glVertex2d( target.x + pLength * m_cos + width * m_sin, target.y + pLength * m_sin - width * m_cos);
glVertex2d( target.x - nLength * m_cos + width * m_sin, target.y - nLength * m_sin - width * m_cos);
}
else
{
glVertex2d( target.x - half_size * m_cos - width * m_sin, target.y - half_size * m_sin + width * m_cos);
glVertex2d( target.x + half_size * m_cos - width * m_sin, target.y + half_size * m_sin + width * m_cos);
glVertex2d( target.x + half_size * m_cos + width * m_sin, target.y + half_size * m_sin - width * m_cos);
glVertex2d( target.x - half_size * m_cos + width * m_sin, target.y - half_size * m_sin - width * m_cos);
}
glEnd();
}
