本文整理汇总了C++中Ray::eval方法的典型用法代码示例。如果您正苦于以下问题：C++ Ray::eval方法的具体用法？C++ Ray::eval怎么用？C++ Ray::eval使用的例子？那么恭喜您, 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Ray的用法示例。
在下文中一共展示了Ray::eval方法的4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: getIntersection
bool Mesh::getIntersection(const Ray & ray, float & t, Vec3<float> & normal) const{
Plane plane;
Vec3<float> normalOutput, vertices4;
bool colision=false;
float pointIntersection;
t=inf;
for(size_t i = 0; i < poligons.size(); i++) {
plane.setPlane(poligons[i].vertices1,poligons[i].vertices2,poligons[i].vertices3);
if(plane.getIntersection(ray,pointIntersection,normal)) {
vertices4 = ray.eval(pointIntersection);
if(getIntersectionTriangle(poligons[i].vertices1, poligons[i].vertices2, poligons[i].vertices3, vertices4) && pointIntersection < t) {
t=pointIntersection;
normalOutput=normal;
colision=true;
}
}
}
if(colision) {
normal = normalOutput;
return true;
}
return false;
}示例2: intersect
bool Box::intersect(const Ray & ray, Intersection & it)
{
Vector3f normal0, normal1, normalVec;
float t0 = 0, t1 = FLT_MAX;
float _t0, _t1;
for (int i = 0; i < 3; ++i) {
if (slabs[i].normal.dot(ray.D)) {
float NdotQ = slabs[i].normal.dot(ray.Q);
float NdotD = slabs[i].normal.dot(ray.D);
_t0 = -(slabs[i].d0 + NdotQ) / NdotD;
_t1 = -(slabs[i].d1 + NdotQ) / NdotD;
if (_t0 > _t1) {
float temp = _t0;
_t0 = _t1;
_t1 = temp;
}
normalVec = slabs[i].normal;
} else {
float NdotQ = slabs[i].normal.dot(ray.Q);
float s0 = NdotQ + slabs[i].d0;
float s1 = NdotQ + slabs[i].d1;
if (s0 * s1 < 0.0f) {
_t0 = 0.0f;
_t1 = FLT_MAX;
} else return false;
}
if (t0 < _t0) {
t0 = _t0;
normal0 = normalVec;
}
if (t1 > _t1) {
t1 = _t1;
normal1 = normalVec;
}
}
if (t0 > t1) return false;
else if (t0 > epsilon) {
it.t = t0;
it.normal = normal0;
}
else if (t1 > epsilon) {
it.t = t1;
it.normal = normal1;
}
else return false;
it.pos = ray.eval(it.t);
it.normal.normalize();
Vector3f cornerToIt = it.pos - corner;
if (cornerToIt[0] < epsilon || cornerToIt[1] < epsilon || cornerToIt[2] < epsilon) {
if (it.normal.dot(diag) > 0.0f) it.normal *= -1;
} else if (it.normal.dot(diag) < 0.0f) it.normal *= -1;
it.pS = this;
return true;
}示例3: intersection
/**
* Calculates whether a ray intersects with a sphere. Returns true or false,
* storing the collision point in result if true.
*/
bool Sphere::intersection(Ray prim_ray, Vec3 &result) {
double t0, t1;
Vec3 obj_center(pos);
Vec3 L = (*prim_ray.p1) - obj_center;
double a = prim_ray.p2->dot(*prim_ray.p2);
double b = 2 * prim_ray.p2->dot(L);
double c = L.dot(L) - (radius * radius);
if(!solve_quadratic(a, b, c, t0, t1)) {
return false;
} else {
prim_ray.eval(t0, result);
return true;
}
}示例4: getIntersection
bool Cube::getIntersection(const Ray & ray, float & t, Vec3<float> & normal) const {
Plane add1(Vec3<float>(min.x, min.y, min.z), Vec3<float>(max.x, min.y, min.z), Vec3<float>(max.x, min.y, max.z));
Plane dd1c1(Vec3<float>(max.x, min.y, min.z), Vec3<float>(max.x, min.y, max.z), Vec3<float>(max.x, max.y, max.z));
Plane adc(Vec3<float>(min.x, min.y, min.z), Vec3<float>(max.x, min.y, min.z), Vec3<float>(max.x, max.y, min.z));
Plane abb1(Vec3<float>(min.x, min.y, min.z), Vec3<float>(min.x, max.y, min.z), Vec3<float>(min.x, max.y, max.z));
Plane bcc1(Vec3<float>(min.x, max.y, min.z), Vec3<float>(max.x, max.y, min.z), Vec3<float>(max.x, max.y, max.z));
Plane a1b1c1(Vec3<float>(min.x, min.y, max.z), Vec3<float>(min.x, max.y, max.z), Vec3<float>(max.x, max.y, max.z));
Vec3<float> pointIntersection, minValue, maxValue, normal1, normalP;
float t1, tP;
t1 = inf;
if(add1.getIntersection(ray, tP, normalP)) {
pointIntersection = ray.eval(tP);
minValue.x = min.x;
minValue.y = min.y;
minValue.z = min.z;
maxValue.x = max.x;
maxValue.y = min.y;
maxValue.z = max.z;
if ((pointIntersection >= minValue) && (pointIntersection <= maxValue)) {
if(tP < t1) {
t1 = tP;
normal1 = normalP;
}
}
}
if(dd1c1.getIntersection(ray, tP, normalP)) {
pointIntersection = ray.eval(tP);
minValue.x = max.x;
minValue.y = min.y;
minValue.z = min.z;
maxValue.x = max.x;
maxValue.y = max.y;
maxValue.z = max.z;
if (pointIntersection >= minValue && pointIntersection <= maxValue) {
if(tP < t1) {
t1 = tP;
normal1 = normalP;
}
}
}
if(adc.getIntersection(ray, tP, normalP)) {
pointIntersection = ray.eval(tP);
minValue.x = min.x;
minValue.y = min.y;
minValue.z = min.z;
maxValue.x = max.x;
maxValue.y = max.y;
maxValue.z = min.z;
if (pointIntersection >= minValue && pointIntersection <= maxValue) {
if(tP < t1) {
t1 = tP;
normal1 = normalP;
}
}
}
if(abb1.getIntersection(ray, tP, normalP)) {
pointIntersection = ray.eval(tP);
minValue.x = min.x;
minValue.y = min.y;
minValue.z = min.z;
maxValue.x = min.x;
maxValue.y = max.y;
maxValue.z = max.z;
if (pointIntersection >= minValue && pointIntersection <= maxValue) {
if(tP < t1) {
t1 = t;
normal1 = normalP;
}
}
}
if(bcc1.getIntersection(ray, tP, normalP)) {
pointIntersection = ray.eval(tP);
minValue.x = min.x;
minValue.y = max.y;
minValue.z = min.z;
maxValue.x = max.x;
maxValue.y = max.y;
maxValue.z = max.z;
if (pointIntersection >= minValue && pointIntersection <= maxValue) {
if(tP < t1) {
t1 = tP;
normal1 = normalP;
}
}
}
if(a1b1c1.getIntersection(ray, tP, normalP)) {
pointIntersection = ray.eval(tP);
minValue.x = min.x;
minValue.y = min.y;
minValue.z = max.z;
maxValue.x = max.x;
maxValue.y = max.y;
maxValue.z = max.z;
if (pointIntersection >= minValue && pointIntersection <= maxValue) {
if(tP < t1) {
t1 = tP;
normal1 = normalP;
//.........这里部分代码省略.........