void myCamera::increaseAspect()
{
if (type == PERSP)
{
aspect = aspect * 4.0 / 3.0;
generateS();
}
else if (type == ORTHO)
{
right += 1;
left -= 1;
generateS();
}
}
void myCamera::switchType()
{
// switch camera type, reload S
if (type == PERSP)
{
type = ORTHO;
generateS();
}
else
{
type = PERSP;
generateS();
}
}
void myCamera::decreaseAspect()
{
if (type == PERSP)
{
aspect = aspect * 3.0 / 4.0;
generateS();
}
else if (type == ORTHO)
{
if((right - 1) > 0 && (left + 1) < 0)
{
right -= 1;
left += 1;
generateS();
}
}
}
void myCamera::increaseHeight()
{
if (type == PERSP)
{
if (fovy + 5 < 140)
{
fovy += 5;
generateS();
}
}
else if (type == ORTHO)
{
top += 1;
bottom -= 1;
generateS();
}
}
/**
*generateV - calculates the sum of the squared error for all variables
*
* @param a the parameters to calculate V
* @param x the variables to calculate V
* @param S_measured the measured S values
* @param paramSize number of parameter elements
* @param measSize number of measurements of S
* @return the squared error
*/
double generateV(double *a, double *x, double *S_measured,
int paramSize, int measSize)
{
double V = 0;
for(int i = 0; i < measSize; i++)
{
V += pow(generateS(a, &x[i], paramSize) - S_measured[i], 2.0);
}
return V;
}
void myCamera::adjustNear(float t)
{
// move the near clipping plane by t
if ((zNear + t) < zFar && (zNear + t) > 0)
{
zNear += t;
}
generateS();
generateM();
}
/**
* generateS - for power law; generating an array of S values
*
* @param a parameters to calculate S
* @param x variables to calculate S
* @param S results stored in this array; S
* @param asize number of parameters
* @param xsize number of variables
*/
void generateS(double* a, double* x, double* S, int asize, int xsize)
{
if(asize <= 0 || xsize <= 0)
return;
for(int j = 0; j < xsize; j++)
{
S[j] = generateS(a, &(x[j]),asize);
}
}
void myCamera::decreaseHeight()
{
if (type == PERSP)
{
if (fovy - 5 > 10)
{
fovy -= 5;
generateS();
}
}
else if (type == ORTHO)
{
if((top - 1) > 0 && (bottom + 1) < 0)
{
top -= 1;
bottom += 1;
generateS();
}
}
}
void myCamera::zoomOut()
{
// zoomOut = increasing fov
if (type == PERSP)
{
if (fovy + 5 < 140)
{
fovy += 5;
generateS();
}
}
else if (type == ORTHO)
{
top += 1;
bottom -= 1;
right += 1;
left -= 1;
generateS();
}
}
void myCamera::adjustFar(float t)
{
// move the far clipping plane by t
if (zFar + t > zNear)
{
zFar += t;
}
generateS();
generateM();
}
void myCamera::zoomIn()
{
// zoomIn = decreasing fov
if (type == PERSP)
{
if (fovy - 5 > 10)
{
fovy -= 5;
generateS();
}
}
else if (type == ORTHO)
{
if((top - 1) > 0 && (bottom + 1) < 0 && (right - 1) > 0 && (left + 1) < 0)
{
top -= 1;
bottom += 1;
right -= 1;
left += 1;
generateS();
}
}
}
myCamera::myCamera(float posx, float posy, float posz, float atx, float aty, float atz, float upx, float upy, float upz, int t)
{
move_speed = 0;
wave = 0;
isSprinting = false;
sprintTime = 100;
type = t;
fovy = 65.0;
aspect = 1.0;
zNear = .1;
zFar = 200.0;
top = 5;
bottom = -5;
left = -5;
right = 5;
pos[0] = posx;
pos[1] = posy;
pos[2] = posz;
pos[3] = 1.0;
look[0] = atx;
look[1] = aty;
look[2] = atz;
look[3] = 1.0;
up[0] = upx;
up[1] = upy;
up[2] = upz;
GLfloat* r = normalize(look);
w[0] = -r[0];
w[1] = -r[1];
w[2] = -r[2];
delete[] r;
GLfloat up_w = dot_product(up, w);
// mult_w = (up dot w) * w
GLfloat *mult_w = scalar_mult(up_w, w);
// up_sub_mult_w = up - (up dot w)*w;
GLfloat* up_sub_mult_w = vector_subtract(up, mult_w);
r = normalize(up_sub_mult_w);
v[0] = r[0];
v[1] = r[1];
v[2] = r[2];
delete [] r;
r = cross_product(v, w);
u[0] = r[0];
u[1] = r[1];
u[2] = r[2];
generateT();
generateR();
generateS();
generateM();
delete [] mult_w;
delete [] up_sub_mult_w;
delete [] r;
}