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aggiunto: 

- static void CavalieriProj( .. )
- static void IsometricProj( .. )

modificato:
- static void TransformGL( .. )
- static void SetSubView( .. )
This commit is contained in:
Paolo Cignoni 2005-06-29 15:02:29 +00:00
parent 494f6ccff7
commit e6feeb2e3d
1 changed files with 64 additions and 5 deletions
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69
wrap/gl/camera.h
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@ -23,6 +23,9 @@
/****************************************************************************
History
$Log: not supported by cvs2svn $
Revision 1.8 2005/02/22 10:57:05 tommyfranken
corrected some syntax errors in GetFrustum
Revision 1.7 2005/02/21 18:11:47 ganovelli
GetFrustum moved from gl/camera to math/camera.h
@ -74,19 +77,64 @@ MatrixGL(vcg::Camera<S> & cam, vcg::Matrix44<S> &m){
return m;
}
static void CavalieriProj(float x1, float x2, float y1, float y2, float z1, float z2)
{
GLfloat cavalieri[16];
cavalieri[0] = 2.0f/(x2-x1); cavalieri[4] = 0;
cavalieri[8] = (0.707106f * -2.0f)/(x2-x1); cavalieri[12] = (x2+x1)/(x2-x1);
cavalieri[1] = 0; cavalieri[5] = 2.0/(y2-y1);
cavalieri[9] = (0.707106f * -2.0f)/(y2-y1); cavalieri[13] = (y2+y1)/(y2-y1);
cavalieri[2] = 0; cavalieri[6] = 0;
cavalieri[10] = -2.0f/(z2-z1); cavalieri[14] = (z2+z1)/(z2-z1);
cavalieri[3] = 0; cavalieri[7] = 0;
cavalieri[11] = 0; cavalieri[15] = 1.0f;
glLoadMatrixf(cavalieri);
}
static void IsometricProj(float x1, float x2, float y1, float y2, float z1, float z2)
{
GLfloat isometric[16];
isometric[0] = 1.6f/(x2-x1); isometric[4] = 0;
isometric[8] = -1.6f/(x2-x1); isometric[12] = (x2+x1)/(x2-x1);
isometric[1] = -1.0f/(y2-y1); isometric[5] = 2.0f/(y2-y1);
isometric[9] = -1.0f/(y2-y1); isometric[13] = (y2+y1)/(y2-y1);
isometric[2] = 0; isometric[6] = 0;
isometric[10] = -2.0f/(z2-z1); isometric[14] = (z2+z1)/(z2-z1);
isometric[3] = 0; isometric[7] = 0;
isometric[11] = 0; isometric[15] = 1.0f;
glLoadMatrixf(isometric);
}
static void GetFrustum(vcg::Camera<S> & camera, S & sx,S & dx,S & bt,S & tp,S & f ,S & fr)
{
camera.GetFrustum(sx,dx,bt,tp,f,fr);
}
static void TransformGL(vcg::Camera<S> & camera, S farDist = -1 ) {
S sx,dx,bt,tp,nr,fr;
GetFrustum(camera,sx,dx,bt,tp,nr,fr);
assert(glGetError()==0);
if(!camera.IsOrtho())
glFrustum(sx,dx,bt,tp,nr,(farDist == -1)?fr:farDist);
else glOrtho(sx*camera.viewportM,dx*camera.viewportM,bt*camera.viewportM,tp*camera.viewportM,nr,(farDist == -1)?fr:farDist);
switch(camera.cameraType) {
case PERSPECTIVE: glFrustum(sx,dx,bt,tp,nr,(farDist == -1)?fr:farDist); break;
case ORTHO: glOrtho(sx*camera.viewportM,dx*camera.viewportM,bt*camera.viewportM,tp*camera.viewportM,nr,(farDist == -1)?fr:farDist); break;
case ISOMETRIC: IsometricProj(sx,dx,bt,tp,nr,(farDist == -1)?fr:farDist); break;
case CAVALIERI: CavalieriProj(sx,dx,bt,tp,nr,(farDist == -1)?fr:farDist); break;
}
/* if(!camera.IsOrtho())
{
//glFrustum(sx,dx,bt,tp,nr,(farDist == -1)?fr:farDist);
IsometricProj(sx,dx,bt,tp,nr,(farDist == -1)?fr:farDist);
}
else glOrtho(sx*camera.viewportM,dx*camera.viewportM,bt*camera.viewportM,tp*camera.viewportM,nr,(farDist == -1)?fr:farDist);
*/
assert(glGetError()==0);
};
@ -103,10 +151,21 @@ static void SetSubView(vcg::Camera<S> & camera,vcg::Point2<S> p0,vcg::Point2<S>
GetFrustum(camera,sx,dx,bt,tp,nr,fr);
S width = dx-sx; //right - left = width
S height = tp-bt; //top - bottom = height
glFrustum(
/*glFrustum(
width* p0[0]+ sx, width* p1[0]+ sx,
height* p0[1]+ bt, height* p1[1]+ bt,
nr,fr);
nr,fr);*/
switch(camera.cameraType) {
case PERSPECTIVE: glFrustum( width* p0[0]+ sx, width* p1[0]+ sx, height* p0[1]+ bt, height* p1[1]+ bt,nr,fr); break;
case ORTHO: glOrtho((width* p0[0]+sx)*camera.viewportM, (width* p1[0]+sx)*camera.viewportM, (height* p0[1]+ bt)*camera.viewportM, (height* p1[1]+bt)*camera.viewportM,nr,fr); break;
case ISOMETRIC: IsometricProj(dx-width* p1[0], dx-width* p0[0], tp-height* p1[1], tp-height* p0[1],nr,fr); break;
case CAVALIERI: CavalieriProj(dx-width* p1[0], dx-width* p0[0], tp-height* p1[1], tp-height* p0[1],nr,fr); break;
}
assert(glGetError()==0);
};
};