//---------------------------------------------------------------------------
void CFabAtHomeView::Pick(UINT nFlags, CPoint point)
//---------------------------------------------------------------------------
{// find objects in selction zone
if(!this->bShowModel) return;
#define BUFSIZE 1000
GLuint selectBuf[BUFSIZE];
GLint hits=0, viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPickMatrix(point.x, viewport[3]-point.y, 5, 5, viewport);
SetViewTransformation();
glMatrixMode(GL_MODELVIEW);
glSelectBuffer(BUFSIZE, selectBuf);
glRenderMode(GL_SELECT);
glInitNames();
DrawScene();
hits = glRenderMode(GL_RENDER);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
SetViewTransformation();
glMatrixMode(GL_MODELVIEW);
// deselect all if necessary
CFabAtHomeDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if ((nFlags & MK_SHIFT) == 0) {
pDoc->model.SelectAll(false);
}
// parse hit buffer and select items
int idx=0,v;
for (int hit = 0; hit<hits; hit++) {
int names = selectBuf[idx];
if (names == 2) {
switch (selectBuf[idx+3]) {
case NAMESTACK_CHUNK:
v = selectBuf[idx+4];
ASSERT(v >= 0 && v <= pDoc->model.chunk.GetSize());
pDoc->model.SelectOneChunk(v);
pDoc->UpdateAllViews(0);
return;
break;
}
}
idx += 3+names;
}
pDoc->UpdateAllViews(0);
}
//---------------------------------------------------------------------------
void CFabAtHomeView::UpdatePerspective()
//---------------------------------------------------------------------------
{// update perspective parameters
wglMakeCurrent(m_pDC->GetSafeHdc(), hrc);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
SetViewTransformation();
glMatrixMode(GL_MODELVIEW);
}
/**********************************************************
*
* SetViewVariables
*
* parameters IN :
* MyMatrix & viewTransformation
*
*********************************************************/
void ViewPointRec::SetViewVariables (MyMatrix & viewTransformation) {
sinTheta = sin ( Util::InRadians (theta) );
cosTheta = cos ( Util::InRadians (theta) );
sinPhi = sin ( Util::InRadians (phi) );
cosPhi = cos ( Util::InRadians (phi) );
xView = rho * cosTheta * sinPhi;
yView = rho * sinTheta * sinPhi;
zView = rho * cosPhi;
SetViewTransformation (viewTransformation);
}
void SetViewVariables(ViewPointRec *view_ref_point, Matrix * view_transformation){
view_ref_point->sin_theta = 0;
view_ref_point->cos_theta = 0;
view_ref_point->sin_phi = 0;
view_ref_point->cos_phi = 0;
view_ref_point->sin_theta = sin(InRadians(view_ref_point->theta));
view_ref_point->cos_theta = cos(InRadians(view_ref_point->theta));
view_ref_point->sin_phi = sin(InRadians(view_ref_point->phi));
if (view_ref_point->phi == 90){
view_ref_point->cos_phi = 0;
}
else
view_ref_point->cos_phi = cos(InRadians(view_ref_point->phi));
view_ref_point->x_view = view_ref_point->rho * view_ref_point->cos_theta * view_ref_point->sin_phi;
view_ref_point->y_view = view_ref_point->rho * view_ref_point->sin_theta * view_ref_point->sin_phi;
view_ref_point->z_view = view_ref_point->rho * view_ref_point->cos_phi;
SetViewTransformation(view_ref_point, *view_transformation);
}
//---------------------------------------------------------------------------
void CFabAtHomeView::InitGL()
//---------------------------------------------------------------------------
{
PIXELFORMATDESCRIPTOR pfd;
int n;
GLfloat fMaxObjSize, fAspect;
GLfloat fNearPlane, fFarPlane;
m_pDC = new CClientDC(this);
ASSERT(m_pDC != NULL);
if (!bSetupPixelFormat())
return;
n = ::GetPixelFormat(m_pDC->GetSafeHdc());
::DescribePixelFormat(m_pDC->GetSafeHdc(), n, sizeof(pfd), &pfd);
hrc = wglCreateContext(m_pDC->GetSafeHdc());
wglMakeCurrent(m_pDC->GetSafeHdc(), hrc);
GetClientRect(&m_oldRect);
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
if (m_oldRect.bottom)
fAspect = (GLfloat)m_oldRect.right/m_oldRect.bottom;
else // don't divide by zero, not that we should ever run into that...
fAspect = 1.0f;
fNearPlane = 0.0f;
fFarPlane = 100.0f;
fMaxObjSize = 3.0f;
m_fRadius = fNearPlane + fMaxObjSize / 2.0f;
//initialize the panning/zooming cursor start point.
startPoint = m_oldRect.CenterPoint();
// initialize rolling matrix with unity
glPushMatrix();
glLoadIdentity();
glRotated(-90,0,0,1);
glRotated(-60,0,1,0);
glScaled(scale, scale, scale);
glGetDoublev(GL_MODELVIEW_MATRIX, rotmat);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
SetViewTransformation();
glMatrixMode(GL_MODELVIEW);
// Load character Set
// BOOL CreateFont( int nHeight, int nWidth, int nEscapement, int nOrientation,
// int nWeight, BYTE bItalic, BYTE bUnderline, BYTE cStrikeOut, BYTE nCharSet,
// BYTE nOutPrecision, BYTE nClipPrecision, BYTE nQuality,
// BYTE nPitchAndFamily, LPCTSTR lpszFacename );
CFont times;
times.CreateFont(0,0,0,0,
FW_NORMAL,FALSE,FALSE,0,DEFAULT_CHARSET,
OUT_TT_PRECIS,CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,
DEFAULT_PITCH,"Times New Roman");
// m_pDC->SelectObject(GetStockObject(SYSTEM_FONT));
m_pDC->SelectObject(×);
// create the bitmap display lists
// we're making images of glyphs 0 thru 255
// the display list numbering starts at 1000, an arbitrary choice
wglUseFontBitmaps(m_pDC->GetSafeHdc(), 0, 255, 1000);
// display a string:
// indicate start of glyph display lists
glListBase(1000);
// to draw the characters in a string, do, for example:
// glCallLists(24, GL_UNSIGNED_BYTE, "Hello Win32 OpenGL World");
}
