Mat4 Camera::GetTransform()
{
Mat4 transform;
transform.MakeHRot(Vec3(1.0f, 0.0f, 0.0f), Pitch);
transform *= HRot4(Vec3(0.0f, 1.0f, 0.0f), Yaw);
transform *= HTrans4(Position);
return transform;
}
void CameraController::Update(float msSinceLastUpdate)
{
float timeFactor = msSinceLastUpdate / 16.0f;
if (camera != 0)
{
if (len(velocity) > 1.0f)
norm(velocity);
camera->Position += velocity;
if (HasMomentum)
{
velocity *= (1.0f - LinearFriction);
}
else
{
velocity.MakeZero();
}
rightVec = camera->GetRightVector();
if (RestrictToXZPlane)
{
forwardVec = proj(Vec4(0.0f, 0.0f, -1.0f, 1.0f) * HRot4(Vec3(0.0f, 1.0f, 0.0f), camera->Yaw));
}
else
{
forwardVec = camera->GetForwardVector();
}
camera->Pitch += pitchVel;
camera->Yaw += yawVel;
if (camera->Pitch >= maxPitch)
camera->Pitch = maxPitch;
else if (camera->Pitch <= -maxPitch)
camera->Pitch = -maxPitch;
if (HasAngularMomentum)
{
pitchVel *= (1.0f - AngularFriction);
yawVel *= (1.0f - AngularFriction);
}
else
{
pitchVel = 0.0f;
yawVel = 0.0f;
}
}
}
void display(void)
{
#if 1
glViewport(0, 0, gw, gh / 5 * 4);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(80, 1, 1, 400);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
x = current_origin_x + _distance * cos(angle * vl_pi / 180);
z = current_origin_z + _distance * sin(angle * vl_pi / 180);
float y = bilinear(x, z);
Vec3 tmove, ttri[3];
tmove = proj(HTrans4(Vec3(x, y, z)) * HRot4(Vec3(0, -1, 0), angle / 180 * vl_pi) * Vec4(move, 1));
for(int i = 0; i < 3; i++){
ttri[i] = proj(HTrans4(Vec3(x, 0, z)) * HRot4(Vec3(0, -1, 0), angle / 180 * vl_pi) * Vec4(tri[i], 1));
ttri[i][1] = bilinear(ttri[i][0], ttri[i][2]);
}
// car configuration
Vec3 xx, yy, zz, tmp;
tmp = ttri[1] - (ttri[0] + ttri[2]) / 2;
tmp[1] = 0;
yy = norm(cross((ttri[0] - ttri[2]), (ttri[1] - ttri[2])));
xx = norm(tmp - dot(yy, tmp) * yy);
zz = cross(xx, yy);
float mat[16] = {xx[0], xx[1], xx[2], 0.0,
yy[0], yy[1], yy[2], 0.0,
zz[0], zz[1], zz[2], 0.0,
x, y + 4.5, z, 1.0};
// testing
/*
cout << "ttri[0] = " << ttri[0] << endl << "ttri[1] = " << ttri[1] << endl << "ttri[2] = " << ttri[2] << endl;
cout << "ttri[0] - ttri[2] = " << ttri[0] - ttri[2] << endl << "ttri[1] - ttri[2] = " << ttri[1] - ttri[2] << endl;
cout << "cross((ttri[0] - ttri[2]), (ttri[1] - ttri[2])) = " << cross((ttri[0] - ttri[2]), (ttri[1] - ttri[2])) << endl;
cout << "yy = norm(cross((ttri[0] - ttri[2]), (ttri[1] - ttri[2])))\n = " << norm(cross((ttri[0] - ttri[2]), (ttri[1] - ttri[2]))) << endl << endl;
printf("(%f, %f, %f)\nxx = (%f, %f, %f)\nyy = (%f, %f, %f)\nzz = (%f, %f, %f)\n", x, y, z, xx[0], xx[1], xx[2], yy[0], yy[1], yy[2], zz[0], zz[1], zz[2]);
printf("ttri = (%f, %f, %f)\n", ttri[0][0], ttri[0][1], ttri[0][2]);
printf("tmp = (%f, %f, %f)\n", tmp[0], tmp[1], tmp[2]);
system("CLS");
*/
gluLookAt(0, 100, 150, 0, 0, 0, 0, 1, 0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDisable(GL_LIGHTING);
glColor3f (1,1,1);
terrain();
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glPushMatrix();
glMultMatrixf(mat);
glRotatef(-90, 0, -1, 0);
glmDraw(car, GLM_MATERIAL | GLM_SMOOTH);
glPopMatrix();
glDisable(GL_LIGHTING);
#endif
#if 1
// map
glViewport(gw / 5 * 4 + 1, gh / 5 * 4 + 1, gw / 5, gh / 5);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(80, 1, 1, 400);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0, 150, 1, 0, 0, 0, 0, 1, 0);
glColor3f (1,1,1);
terrain();
glPushAttrib(GL_ENABLE_BIT);
glColor3f(1, 0, 0);
glPointSize(7);
glDisable(GL_TEXTURE_2D);
glEnable(GL_POINT_SMOOTH);
glBegin(GL_POINTS);
glVertex3dv(tmove.Ref());
glEnd();
glPopAttrib();
#endif
glutSwapBuffers();
}
Vec3 Camera::GetRightVector()
{
Vec3 rightVec;
rightVec = proj(Vec4(1.0f, 0.0f, 0.0, 1.0f) * HRot4(Vec3(0.0f, 1.0f, 0.0f), Yaw));
return rightVec;
}
Vec3 Camera::GetForwardVector()
{
Vec3 forwardVec;
forwardVec = proj(Vec4(0.0f, 0.0f, -1.0f, 1.0f) * HRot4(Vec3(1.0f, 0.0f, 0.0f), Pitch) * HRot4(Vec3(0.0f, 1.0f, 0.0f), Yaw));
return forwardVec;
}