本文整理汇总了C++中Sphere::C方法的典型用法代码示例。如果您正苦于以下问题：C++ Sphere::C方法的具体用法？C++ Sphere::C怎么用？C++ Sphere::C使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Sphere的用法示例。
在下文中一共展示了Sphere::C方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: malloc
float *willHitWhere2(Scene *s,float *r_dir, float *o) {
float *r = vec::normalize(r_dir);
float *ret = (float*) malloc(sizeof(float) * 4);
ret[0] = -100000;
float t1, t2, t = 0;
float t_temp = 100000;
//float low = -1000;
unsigned int i = 0;
for (i=0; i < s->object.size(); i++) {
Sphere *sphere = dynamic_cast<Sphere *>(s->object[i]);
if ( sphere != NULL ) {
float d = pow(sphere->B(o,r),2) - (4 * sphere->C(o));
if ( d >= 0 ) {// && sphere->position[2] > low) {
//low = sphere->position[2];
t1 = (-1 * sphere->B(o,r) - sqrt(d)) / 2;
t2 = (-1 * sphere->B(o,r) + sqrt(d)) / 2;
t = ((t1 < t2) ? t1 : t2);
if (fabs(t) < fabs(t_temp)) {
t_temp = t;
ret = vec::add(o,vec::mul(t,r));
ret[3] = (float) i;
}
}
}
}
return ret;
}示例2: shadeRay
float * shadeRay(Scene *s, int k, float *r, int c) {
//Getting the values from the material for readbility
float odr = s->object[k]->mc[0];
float odg = s->object[k]->mc[1];
float odb = s->object[k]->mc[2];
float osr = s->object[k]->mc[3];
float osg = s->object[k]->mc[4];
float osb = s->object[k]->mc[5];
float ka = s->object[k]->mc[6];
float kd = s->object[k]->mc[7];
float ks = s->object[k]->mc[8];
float n = s->object[k]->mc[9];
float al = s->object[k]->mc[10];
float nt = s->object[k]->mc[11];
//printf("mc: %f %f %f \n", odr, odg, odb);
//cout << "K: " << k << " ";
float *V = vec::normalize(vec::mul(-1,s->viewdir));
float *N = V;//gets rid of error
Sphere *sp = dynamic_cast<Sphere *>(s->object[k]);
if (sp != NULL) {
N = vec::div(vec::sub(r,sp->position),sp->radius);
} else {
N[0] = 0; N[1] = 1; N[2] = 0;
printf("Set normal weird\n");
}
float ni = 1.0;
float Frn = pow((nt-ni)/(nt+ni),2);
float *I = vec::negate(s->viewdir);
float Fr = Frn + (1 - Frn) * pow((1 - vec::dot(I,N)),5);
float *ret = (float *) malloc(sizeof(float) * 3);
float *spec = (float *) malloc(sizeof(float) * 3);
float *refrac = (float *) malloc(sizeof(float) * 3);
unsigned int m,w;
float temp_r1, temp_r2, temp_r3, d, t, t1, t2 = 0;
//The loop that sums all the light sources
for (m = 0; m < s->lights.size(); m++) {
float lr = s->lights[m]->color[0];
float lg = s->lights[m]->color[1];
float lb = s->lights[m]->color[2];
float *L;
if (s->lights[m]->w == 0) {
L = vec::normalize(vec::mul(-1, s->lights[m]->position));
} else {
L = vec::normalize(vec::sub(s->lights[m]->position, r));
}
float *H = vec::normalize(vec::add(L,V));
float NoL = fmax(0.0,vec::dot(N,L));
float NoH = fmax(0.0,vec::dot(N,H));
float mod = 1.0;
//printf("H: %f %f %f NoL %f Noh %f\n", H[0], H[1], H[2], NoL, NoH);
//printf("L: %f %f %f", L[0], L[1], L[2]);
//Checking if a light ray hits another object on way back to source
for (w = 0; w < s->object.size(); w++) {
Sphere *sphere = dynamic_cast<Sphere *>(s->object[w]);
if ( sphere != NULL ) {
d = (float)pow((double)sphere->B(r,vec::normalize(s->lights[m]->position)),2)-
(4*sphere->C(r));
if (d >= 0) {
t1 = (-1 * sphere->B(r,vec::normalize(s->lights[m]->position))-sqrt(d)) / 2;
t2 = (-1 * sphere->B(r,vec::normalize(s->lights[m]->position))+sqrt(d)) / 2;
t = ((t1 < t2) ? t1 : t2);
mod = ((t > 0.1) ? 0 : 1.0);
w = s->object.size(); //break;
}
} else {
printf("sphere Null");
}
}
temp_r1 += mod * lr * ((kd*odr*NoL) + (ks*osr*pow(NoH,n)));
temp_r2 += mod * lg * ((kd*odg*NoL) + (ks*osg*pow(NoH,n)));
temp_r3 += mod * lb * ((kd*odb*NoL) + (ks*osb*pow(NoH,n)));
}
//float *R = vec::sub(vec::mul(2 * vec::dot(N,I),N),I);
//float *T = vec::add(vec::mul(sqrt(1-(pow(ni/nt,2)*(1-pow(vec::dot(N,I),2)))),
// vec::negate(N)), vec::mul((ni/nt),(vec::sub(vec::mul(
// vec::dot(N,I),N),I))));
//spec = specShadeRay(s,k,r,R,1);
if (al != 1) {
//refrac = refracRay(s,k,r,T,ni,1);
} else {
//.........这里部分代码省略.........