void GraphicCamera::MouseMotionEventHandler(int x, int y) {
int mouse_dx, mouse_dy, d;
double z;
Vec3d mouse_pos, dir;
Vec3d WndX, WndY, WndZ;
float realy;
double wx, wy, wz;
if (CameraMode != kINACTIVE) {
mouse_dx = x - MousePrevX;
mouse_dy = y - MousePrevY;
if (abs(mouse_dx) > abs(mouse_dy)) {
d = mouse_dx;
} else {
d = mouse_dy;
}
switch(CameraMode) {
case kZOOM:
z = (double) d / 100.0;
dir = aim_ - pos_;
if (dir.Norm() < 0.1 && z > 0) {
z *= 10.0;
aim_ = aim_ + z * dir;
}
pos_ = pos_ + z * dir;
break;
case kROTATE:
dt_azim = ((double) (x - MouseStartX)) / 5.0;
dt_elev = ((double) (y - MouseStartY)) / 5.0;
loc_dt_azim = ((double) mouse_dx) / 5.0;
loc_dt_elev = ((double) mouse_dy) / 5.0;
WndX = {1.0, 0.0, 0.0};
WndY = {0.0, 1.0, 0.0};
RotateX(WndX, current_elev + dt_elev);
RotateY(WndX, current_azim + dt_azim);
WndX.z() *= -1;
RotateX(WndY, current_elev + dt_elev);
RotateY(WndY, current_azim + dt_azim);
WndY.z() *= -1;
WndZ = (WndX % WndY).Normalization();
ArbitraryRotate(WndX, WndY, WndZ, loc_dt_elev, 0, pos_, aim_);
ArbitraryRotate(Vec3d(1, 0, 0), Vec3d(0, 1, 0), Vec3d(0, 0, 1), 0,
-loc_dt_azim, pos_, aim_);
up_ = WndY.Normalization();
break;
case kTRANSLATE:
realy = ViewPort[3] - y - 1;
gluProject(aim_.x(), aim_.y(), aim_.z(), MvMat.GetPtr(),
ProjMat.GetPtr(), ViewPort,
&wx, &wy, &wz);
gluUnProject((GLdouble) x, (GLdouble) realy, wz, MvMat.GetPtr(),
ProjMat.GetPtr(),
ViewPort, &mouse_pos.x(), &mouse_pos.y(),
&mouse_pos.z());
// move both the camera position and its aim coordinate
dir = mouse_pos - PrevMousePos;
pos_ = pos_ - dir;
aim_ = aim_ - dir;
PrevMousePos = mouse_pos;
break;
}
MousePrevX = x;
MousePrevY = y;
}
}
void draw_s2fishdome(CAMERA cam) {
// draw a fisheye / warped projection of the geometry
double r, near, far;
XYZ vp, vd, vr, vl;
XYZ vright, vleft, vup;
// Calculate various view vectors
vp = cam.vp;
vd = cam.vd;
vr = CrossProduct(vd,cam.vu);
vl = CrossProduct(cam.vu,vd);
vd = ArbitraryRotate(vd,cam.fishrotate,vr);
vup = CrossProduct(vr,vd);
vright = VectorAdd(vr,vd);
vleft = VectorAdd(vl,vd);
near = VectorLength(_s2priv_pmin(),_s2priv_pmax()) / 100;
far = MAX(cam.focallength,VectorLength(_s2priv_pmin(),
_s2priv_pmax())) * 20;
// Left
glDrawBuffer(GL_BACK);
glReadBuffer(GL_BACK);
glViewport(0,0,TEXTURESIZE,TEXTURESIZE);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
s2Perspective(90.0,1.0,near,far);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
s2LookAt(vp.x,vp.y,vp.z,vp.x+vleft.x,vp.y+vleft.y,vp.z+vleft.z,vup.x,vup.y,vup.z);
MakeLighting();
MakeMaterial();
MakeGeometry(FALSE, FALSE);
glBindTexture(GL_TEXTURE_2D,walltextureid[2]);
glCopyTexSubImage2D(GL_TEXTURE_2D,0,0,0,0,0,TEXTURESIZE,TEXTURESIZE);
// Right
glDrawBuffer(GL_BACK);
glReadBuffer(GL_BACK);
glViewport(0,0,TEXTURESIZE,TEXTURESIZE);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
s2Perspective(90.0,1.0,near,far);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
s2LookAt(vp.x,vp.y,vp.z,vp.x+vright.x,vp.y+vright.y,vp.z+vright.z,vup.x,vup.y,vup.z);
MakeLighting();
MakeMaterial();
MakeGeometry(FALSE, FALSE);
glBindTexture(GL_TEXTURE_2D,walltextureid[3]);
glCopyTexSubImage2D(GL_TEXTURE_2D,0,0,0,0,0,TEXTURESIZE,TEXTURESIZE);
// Top
glDrawBuffer(GL_BACK);
glReadBuffer(GL_BACK);
glViewport(0,0,TEXTURESIZE,TEXTURESIZE);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
s2Perspective(90.0,1.0,near,far);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
s2LookAt(vp.x,vp.y,vp.z,vp.x+vup.x,vp.y+vup.y,vp.z+vup.z,-vright.x,-vright.y,-vright.z);
MakeLighting();
MakeMaterial();
MakeGeometry(FALSE, FALSE);
glBindTexture(GL_TEXTURE_2D,walltextureid[0]);
glCopyTexSubImage2D(GL_TEXTURE_2D,0,0,0,0,0,TEXTURESIZE,TEXTURESIZE);
// Bottom
glDrawBuffer(GL_BACK);
glReadBuffer(GL_BACK);
glViewport(0,0,TEXTURESIZE,TEXTURESIZE);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
s2Perspective(90.0,1.0,near,far);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
s2LookAt(vp.x,vp.y,vp.z,vp.x-vup.x,vp.y-vup.y,vp.z-vup.z,-vleft.x,-vleft.y,-vleft.z);
MakeLighting();
MakeMaterial();
MakeGeometry(FALSE, FALSE);
glBindTexture(GL_TEXTURE_2D,walltextureid[1]);
glCopyTexSubImage2D(GL_TEXTURE_2D,0,0,0,0,0,TEXTURESIZE,TEXTURESIZE);
// Remember the graphics state and return it at the end
glPushAttrib(GL_ALL_ATTRIB_BITS);
glDisable(GL_LIGHTING);
glDisable(GL_ALPHA_TEST);
glDisable(GL_COLOR_MATERIAL);
glDisable(GL_DITHER);
//glDisable(GL_FOG);
glDisable(GL_LINE_SMOOTH);
glDisable(GL_LINE_STIPPLE);
glDisable(GL_SCISSOR_TEST);
glDisable(GL_STENCIL_TEST);
// Setup projections for the dome
glDrawBuffer(GL_BACK);
if (_s2fd_options->dometype == WARPMAP)
glClearColor(0.0,0.0,0.0,0.0);
else
glClearColor(0.05,0.05,0.05,0.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glViewport(0,0,_s2fd_options->screenwidth,_s2fd_options->screenheight);
r = _s2fd_options->screenwidth / (double)_s2fd_options->screenheight;
switch (_s2fd_options->dometype) {
case TRUNCTOP:
case TRUNCBOTTOM:
glOrtho(-r*0.75,r*0.75,-0.75,0.75,0.1,10.0);
break;
case HSPHERICAL:
glOrtho(-r*0.75,r*0.75,-0.75,0.75,0.1,10.0);
break;
case VSPHERICAL:
case WARPMAP:
default:
glOrtho(-r,r,-1.0,1.0,0.1,10.0);
break;
}
// Create camera projection for dome
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
switch (_s2fd_options->dometype) {
case TRUNCBOTTOM:
s2LookAt(0.0,-1.0,0.25,0.0,0.0,0.25,0.0,0.0,1.0);
break;
case TRUNCTOP:
s2LookAt(0.0,-1.0,-0.25,0.0,0.0,-0.25,0.0,0.0,1.0);
break;
case HSPHERICAL:
case VSPHERICAL:
case WARPMAP:
default:
s2LookAt(0.0,-1.0,0.0,0.0,0.0,0.0,0.0,0.0,1.0);
break;
}
// Finally draw the dome geometry
glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
glColor3f(1.0,1.0,1.0);
DrawDome(TRUE,FALSE);
_s2_fadeinout();
DrawExtras();
glPopAttrib();
}