bool Sphere::intersect(Ray ray, float* t, vec3f* intersectionPoint) const noexcept
{
const vec3f k{implementation->position - ray.position};
const float a = ray.direction.dot(k);
const float D = a * a - (k.dot(k) - implementation->radius * implementation->radius);
if (D < 0.0F)
return false;
const float sqrtD = std::sqrt(D);
const float t1 = a - sqrtD;
const float t2 = a + sqrtD;
const float minT = std::min(t1, t2);
const float maxT = std::max(t1, t2);
const float fineT = minT >= 0.0F ? minT : maxT;
if (fineT < 0.0F)
return false;
if (t) *t = fineT;
if (intersectionPoint)
*intersectionPoint = ray.position + ray.direction * fineT;
return true;
}
vec3f vec3f::random(){
static vec3f rnd;
rnd.x=random_double()*2-1;
rnd.y=random_double()*2-1;
rnd.z=random_double()*2-1;
rnd.normalize();
return rnd;
}
bool Camera::InView(const vec3f& p, float radius) const {
const vec3f t = (p - pos);
return
(t.dot3D(frustumR) < radius) &&
(t.dot3D(frustumL) < radius) &&
(t.dot3D(frustumB) < radius) &&
(t.dot3D(frustumT) < radius);
}
camera()
{
V.make_identity();
P.make_identity();
R.make_identity();
position.set_value( vec3f(0,0,100) );
euler_rotation.set_value( vec3f(0,0,0) );
rotation.set_value( vec3f(0,1,0), 0);
}
// Given a point and a plane (defined by a coplanar point and a normal), compute the closest point
// in the plane. (The plane is unbounded.)
vec3f NearestPointInPlane(const vec3f &point, const vec3f &planePoint, const vec3f &planeNormal)
{
vec3f nearestPoint;
vec3f pointDelta = point - planePoint;
float delta = planeNormal.dot(pointDelta) / planeNormal.dot(planeNormal);
nearestPoint = point - delta*planeNormal;
return nearestPoint;
}
color texture2D(vec3f coords, texture t){
int x = coords.x() * t.width;
int y = t.height-(coords.y() * t.height);
if(t.bytesperpixel == 4){
return t.data[y*t.height + x];
}
uint8_t* data = (uint8_t*)t.data;
int col= (int)(data[t.bytesperpixel*(y*t.height + x)]);
return gammaCorrect((color){static_cast<uint8_t>(col>>24),static_cast<uint8_t>((col>>16) &255),static_cast<uint8_t>((col>>8)&255),255});
/**
* LookTowards
*
* Note 1: Function will exit if front_vec is (close to) parallel to the Y-axis; supply your own up_vec if this is the case.
* Note 2: Not fully tested, use at own risk...
*
* Example:
* Make camera look at 'my_node'. Note that world space positions are used.
* camera->lookAt( my_node->getWorldPosition() - camera->getWorldPosition() );
*/
void Transformable::lookTowards(
vec3f front_vec,
vec3f up_vec
)
{
vec3f right;
vec3f up;
vec3f prev_up;
front_vec.normalize();
up_vec.normalize();
if (abs(up_vec.dot(front_vec)) > 0.99999f) {
return;
}
if (parent && parent->is_transformable) {
mat3f mat;
R = ((Transformable *) parent)->getWorldMatrix().rotationMatrix();
R.inv();
prev_up = up_vec;
right = front_vec.cross(prev_up);
up = right.cross(front_vec);
right.normalize();
up.normalize();
mat.setCol(0, right);
mat.setCol(1, up);
mat.setCol(2, -front_vec);
R = R * mat;
} else {
prev_up = up_vec;
right = front_vec.cross(prev_up);
up = right.cross(front_vec);
right.normalize();
up.normalize();
R.setCol(0, right);
R.setCol(1, up);
R.setCol(2, -front_vec);
}
}
void Logstalgia::addGroup(std::string grouptitle, std::string groupregex, int percent, vec3f colour) {
if(percent<0) return;
int remainpc = (int) ( ((float) remaining_space/total_space) * 100);
if(percent==0) {
percent=remainpc;
}
if(remainpc<percent) return;
int space = (int) ( ((float)percent/100) * total_space );
int top_gap = total_space - remaining_space;
int bottom_gap = display.height - (total_space - remaining_space + space);
//debugLog("group %s: regex = %s, remainpc = %d, space = %d, top_gap = %d, bottom_gap = %d\n",
// grouptitle.c_str(), groupregex.c_str(), remainpc, space, top_gap, bottom_gap);
Summarizer* summ = new Summarizer(fontSmall, paddle_x, top_gap, bottom_gap, update_rate, groupregex, grouptitle);
// summ->showCount(true);
if(colour.length2() > 0.01f) {
summ->setColour(colour);
}
summGroups.push_back(summ);
remaining_space -= space;
}
double SynthScore::handOrientationScore(const DisembodiedObject &object, const mat4f &modelToWorld, const Agent &agent)
{
const vec3f diff = modelToWorld * (object.model->bbox.getCenter() + vec3f(object.agentFace.x, object.agentFace.y, 0.0f)) - modelToWorld * object.model->bbox.getCenter();
//const OBBf worldBBox = modelToWorld * OBBf(object.model->bbox);
//vec3f agentFaceDir = (worldBBox.getCenter() - agent.handPos());
//agentFaceDir.z = 0.0f;
//float dot = diff.getNormalized() | agentFaceDir.getNormalized();
float dot = diff.getNormalized() | agent.gazeDir;
if (dot < 0.0f)
return 0.0f;
return dot;
}
void matrix4x4f::rotate( const float &angle, vec3f &axis )
{
float s = sin(DEGTORAD(angle));
float c = cos(DEGTORAD(angle));
axis.norm();
float ux = axis.x;
float uy = axis.y;
float uz = axis.z;
m[0] = c + (1-c) * ux*ux;
m[1] = (1-c) * ux*uy + s*uz;
m[2] = (1-c) * ux*uz - s*uy;
m[3] = 0;
m[4] = (1-c) * uy*ux - s*uz;
m[5] = c + (1-c) * pow(uy,2);
m[6] = (1-c) * uy*uz + s*ux;
m[7] = 0;
m[8] = (1-c) * uz*ux + s*uy;
m[9] = (1-c) * uz*uy - s*ux;
m[10] = c + (1-c) * pow(uz,2);
m[11] = 0;
m[12] = 0;
m[13] = 0;
m[14] = 0;
m[15] = 1;
}
bool Camera::AABBInOriginPlane(const vec3f& plane, const vec3f& mins, const vec3f& maxs) const {
vec3f fp;
fp.x = (plane.x > 0.0f)? mins.x: maxs.x;
fp.y = (plane.y > 0.0f)? mins.y: maxs.y;
fp.z = (plane.z > 0.0f)? mins.z: maxs.z;
return (plane.dot3D(fp - pos) < 0.0f);
}
particle_intermediate make_particle_jet(int num, vec3f start, vec3f dir, float len, float angle, vec3f col, float speedmod)
{
std::vector<cl_float4> p1;
std::vector<cl_float4> p2;
std::vector<cl_uint> colours;
for(uint32_t i = 0; i<num; i++)
{
float len_pos = randf_s(0, len);
float len_frac = len_pos / len;
vec3f euler = dir.get_euler();
euler = euler + (vec3f){0, randf_s(-angle, angle), randf_s(-angle, angle)};
vec3f rot_pos = (vec3f){0.f, len_pos, 0.f}.rot({0.f, 0.f, 0.f}, euler);
vec3f final_pos = start + rot_pos;
final_pos = final_pos + randf<3, float>(-len/40.f, len/40.f);
float mod = speedmod;
p1.push_back({final_pos.v[0], final_pos.v[1], final_pos.v[2]});
vec3f pos_2 = final_pos * mod;
//p2.push_back({pos_2.v[0], pos_2.v[1], pos_2.v[2]});
col = clamp(col, 0.f, 1.f);
colours.push_back(rgba_to_uint(col));
}
//******************************************************************
//FUNCTION:
void COutdoorLightScattering::__getRaySphereIntersection(vec3f vRayOrigin, vec3f vRayDirection, vec3f vSphereCenter, float vSphereRadius, vec2f& voIntersection)
{
vRayOrigin -= vSphereCenter;
float A = vRayDirection.dot(vRayDirection);
float B = 2 * vRayOrigin.dot(vRayDirection);
float C = vRayOrigin.dot(vRayOrigin) - vSphereRadius * vSphereRadius;
float D = B * B - 4 * A * C;
if (D < 0)
{
voIntersection = vec2f(-1);
}
else
{
D = sqrt(D);
voIntersection = vec2f((-B - D) / 2 * A, (-B + D) / 2 * A);
}
}
vec3f interpolate(vec3f current, vec3f target, float timeDelta, float maxSpeed, float maxDistance)
{
float distance = current.getDistanceFrom(target);
if(distance > maxDistance)
return target;
else {
float d = std::min(distance, (distance/maxDistance)*maxSpeed*timeDelta);
return current + (target-current).normalize()*d;
}
}
vec3f::vec3f(const vec3f& aVec)
{
float v[3];
aVec.get(v[0], v[1], v[2]);
vec[X] = v[X];
vec[Y] = v[Y];
vec[Z] = v[Z];
}
void CSMFRenderer::DrawPotentiallyVisibleSquares(const Camera* cam, int, int) {
const CReadMap* rm = readMap;
const float* hm = rm->GetHeightmap();
// const vec3f* nm = &rm->facenormals[0];
// each square is drawn clockwise topside-up
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glFrontFace(GL_CW);
// our normals are always unit-length
glDisable(GL_NORMALIZE);
glPolygonMode(GL_FRONT, GL_FILL);
for (int i = 0; i < numSquares; i++) {
Square& q = squares[i];
if (!SquareRowVisible(q.idx, rm, cam)) {
// advance to start of next row
i += (numSquaresX - (i % numSquaresX));
continue;
}
// note: slightly inefficient, would be better to use y-extremes of <q>
vec3f minBounds = q.GetMinBounds(); minBounds.y = rm->currMinHeight;
vec3f maxBounds = q.GetMaxBounds(); maxBounds.y = rm->currMaxHeight;
const vec3f v = (cam->pos - q.mid);
const float dSq = v.sqLen3D();
const bool draw = (dSq < viewRadiusSq && cam->InView(minBounds, maxBounds));
if (draw) {
DrawSquare(q, v, rm, hm);
}
}
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glEnable(GL_NORMALIZE);
glDisable(GL_CULL_FACE);
glFrontFace(GL_CCW);
}
bool BBox::Overlap( const vec3f& p ) const
{
bool x = (pMax.x() >= p.x()) && (pMin.x() <= p.x());
bool y = (pMax.y() >= p.y()) && (pMin.y() <= p.y());
bool z = (pMax.z() >= p.z()) && (pMin.z() <= p.z());
return (x && y && z);
}
bool Entity::accumulateForce(vec3f steeringToAdd)
{
float forceUsed = mSteeringForce.getLength();
float forceRemaining = mMaxForce - forceUsed;
if (forceRemaining <= 0)
return false;
float forceToAdd = steeringToAdd.getLength();
if (forceToAdd < forceRemaining)
{
mSteeringForce += steeringToAdd;
}
else
{
steeringToAdd.normalize();
mSteeringForce += steeringToAdd * forceRemaining;
}
return true;
}
vec2f Grid::coordsToMapPos(vec3f coords) {
GLfloat width = d_cellWidth * d_rows;
GLfloat height = d_cellHeight * d_cols;
GLfloat x = floor(coords.x() / width);
GLfloat y = floor(coords.z() / height);
// Clamp the values into the bounds
if (x > d_rows) {
x = d_rows;
} else if (x < 0) {
x = 0;
}
if (y > d_cols) {
y = d_cols;
} else if (y < 0) {
y = 0;
}
return vec2f(x, y);
}
static void Spawn (CPlayerEntity *Player, vec3f Start, vec3f AimDir, int DamageMultiplier, int Speed)
{
vec3f dir = AimDir.ToAngles();
anglef angles = dir.ToVectors ();
CProx *Prox = QNewEntityOf CProx;
Prox->State.GetOrigin() = Start;
Prox->Velocity = (AimDir * Speed)
.MultiplyAngles (200 + crand() * 10.0f, angles.Up)
.MultiplyAngles (crand() * 10.0f, angles.Right);
Prox->State.GetAngles() = dir - vec3f(90, 0, 0);
Prox->PhysicsType = PHYSICS_BOUNCE;
Prox->GetSolid() = SOLID_BBOX;
Prox->State.GetEffects() |= FX_GRENADE;
Prox->GetClipmask() = CONTENTS_MASK_SHOT|CONTENTS_LAVA|CONTENTS_SLIME;
Prox->State.GetRenderEffects() |= RF_IR_VISIBLE;
Prox->GetMins().Set (-6, -6, -6);
Prox->GetMaxs().Set (6, 6, 6);
Prox->State.GetModelIndex() = ModelIndex ("models/weapons/g_prox/tris.md2");
Prox->SetOwner(Player);
Prox->Firer = Player;
Prox->Touchable = true;
Prox->ThinkType = PROXTHINK_EXPLODE;
Prox->Damage = PROX_DAMAGE * DamageMultiplier;
Prox->ClassName = "prox";
switch (DamageMultiplier)
{
case 1:
Prox->NextThink = Level.Frame + PROX_TIME_TO_LIVE;
break;
case 2:
Prox->NextThink = Level.Frame + 300;
break;
case 4:
Prox->NextThink = Level.Frame + 150;
break;
case 8:
Prox->NextThink = Level.Frame + 100;
break;
default:
Prox->NextThink = Level.Frame + PROX_TIME_TO_LIVE;
break;
}
Prox->Link ();
}
void clamp(vec3f & v, float min, float max)
{
if(v.peekx() > max) v.x() = max;
if(v.peekx() < min) v.x() = min;
if(v.peeky() > max) v.y() = max;
if(v.peeky() < min) v.y() = min;
if(v.peekz() > max) v.z() = max;
if(v.peekz() < min) v.z() = min;
}
void clamp(vec3f & v, float vmin, float vmax)
{
if(v.peekx() > vmax) v.x() = vmax;
if(v.peekx() < vmin) v.x() = vmin;
if(v.peeky() > vmax) v.y() = vmax;
if(v.peeky() < vmin) v.y() = vmin;
if(v.peekz() > vmax) v.z() = vmax;
if(v.peekz() < vmin) v.z() = vmin;
}
void mat4x4f::lookAt(const vec3f & vFrom, const vec3f & vTo, const vec3f & vUp)
{
vec3f vZ = Normalise(vFrom - vTo);
//vZ.Dumpvec3f("vZ");
vec3f vX = Normalise(vUp.Cross(vZ));
//vX.Dumpvec3f("vX");
vec3f vY = vZ.Cross(vX);
//vY.Dumpvec3f("vY");
elem[0][0] = vX.i; elem[0][1] = vY.i; elem[0][2] = vZ.i; elem[0][3] = 0;
elem[1][0] = vX.j; elem[1][1] = vY.j; elem[1][2] = vZ.j; elem[1][3] = 0;
elem[2][0] = vX.k; elem[2][1] = vY.k; elem[2][2] = vZ.k; elem[2][3] = 0;
elem[3][0] = -vX.dot3(vFrom);
elem[3][1] = -vY.dot3(vFrom);
elem[3][2] = -vZ.dot3(vFrom);
elem[3][3] = 1;
}
bool baryCentricTriangle(vec2f p, vec3f v1, vec3f v2, vec3f v3, float &u, float &v, float &r)
{
float x1mx3 = v1.x() - v3.x();
float x2mx3 = v2.x() - v3.x();
float y1my3 = v1.y() - v3.y();
float y2my3 = v2.y() - v3.y();
float det = (x1mx3 * y2my3) - (y1my3*x2mx3);
float pxmx3 = p.x() - v3.x();
float pymy3 = p.y() - v3.y();
if(det == 0.0 || det == -0.0) return false;
u = (y2my3*pxmx3 + x2mx3*-1*pymy3)/det;
v = (y1my3*-1*pxmx3 + x1mx3*pymy3)/det;
r = 1-u-v;
if (u > 1.0f || v > 1.0f || r > 1.0f) return false;
if (u < 0.0f || v < 0.0f || r < 0.0f) return false;
return true;
}
void DepthBuffer::setCamera(const mat44f& viewProjection,float znear,float zfar,float fov,vec3f cameraPos,vec3f cameraDir,vec3f cameraUp){
viewProjection_ = viewProjection;
znear_ = znear;
zfar_ = zfar;
fov_ = fov;
float aspect = float(size_.x)/float(size_.y);
cameraPos_ = cameraPos;
cameraDir_ = cameraDir;
vec3f cameraRight = cameraDir.cross(cameraUp).normalize();
cameraUp = cameraRight.cross(cameraDir);
//
auto upLength = tanf(fov/2.0f)*znear;
auto rightLength = upLength * (aspect);
cameraRight = cameraRight*rightLength;
cameraUp = cameraUp*upLength;
cameraRight_ = vec4f(cameraRight.x,cameraRight.y,cameraRight.z,1);
cameraUp_ = vec4f(cameraUp.x,cameraUp.y,cameraUp.z,1);
aabbFrontFaceMask = calculateBoxVisibleFaceMask(cameraDir);
}
void OrbitCamera::Init(const vec3f& p, const vec3f& t) {
const vec3f v = (t - p);
const vec3f w = v.norm3D();
const float d = v.len3D();
// acosf() takes values in [-1.0, 1.0]
const float e = RAD2DEG(acosf(v.len2D() / d));
const float r = RAD2DEG(acosf(w.dot2D(XVECf)));
// when v is parallel to world z-axis, dot
// with x-axis will be 0 and rotation then
// is ambiguous (can be +90 or -90): check
// the sign of v.z to determine if we are
// looking down +z or -z
distance = cDistance = d;
elevation = cElevation = e;
rotation = cRotation = (v.z > 0.0f)? 180.0f + r: 180.0f - r;
cen = t;
active = false;
}
void Vizzer::init(ApplicationData &app)
{
assets.init(app.graphics);
vec3f eye(0.5f, 0.2f, 0.5f);
vec3f worldUp(0.0f, 1.0f, 0.0f);
camera = Cameraf(-eye, eye, worldUp, 60.0f, (float)app.window.getWidth() / app.window.getHeight(), 0.01f, 10000.0f);
camera = Cameraf("-0.774448 1.24485 -1.35404 0.999848 1.80444e-009 -0.0174517 0.0152652 -0.484706 0.874544 -0.00845866 -0.874677 -0.484632 0 1 0 60 1.25 0.01 10000");
//-0.774448 1.24485 -1.35404 0.999848 1.80444e-009 -0.0174517 0.0152652 -0.484706 0.874544 -0.00845866 -0.874677 -0.484632 0 1 0 60 1.25 0.01 10000
font.init(app.graphics, "Calibri");
state.bundler.loadSensorFile(constants::dataDir + "/sensors/sample.sensor");
state.bundler.computeKeypoints();
state.bundler.addCorrespondences(1);
state.bundler.addCorrespondences(2);
state.bundler.addCorrespondences(4);
state.bundler.addCorrespondences(6);
state.bundler.addCorrespondences(12);
state.bundler.addCorrespondences(20);
state.bundler.addCorrespondences(30);
state.bundler.addCorrespondences(40);
state.bundler.addCorrespondences(60);
state.bundler.addCorrespondences(80);
state.bundler.addCorrespondences(100);
state.bundler.solve();
state.bundler.thresholdCorrespondences(0.01);
state.bundler.solve();
//state.bundler.thresholdCorrespondences(0.005);
//state.bundler.solve();
state.bundler.saveKeypointCloud(constants::debugDir + "result.ply");
state.bundler.saveResidualDistribution(constants::debugDir + "residuals.csv");
state.frameCloudsSmall.resize(state.bundler.frames.size());
state.frameCloudsBig.resize(state.bundler.frames.size());
for (auto &frame : iterate(state.bundler.frames))
{
vector<TriMeshf> meshesSmall, meshesBig;
auto makeColoredBox = [](const vec3f ¢er, const vec4f &color, float radius) {
TriMeshf result = ml::Shapesf::box(radius, radius, radius);
result.transform(mat4f::translation(center));
result.setColor(color);
return result;
};
const int stride = 5;
for (auto &p : frame.value.depthImage)
{
vec2i coord((int)p.x, (int)p.y);
const vec3f framePos = frame.value.localPos(coord);
if (!framePos.isValid() || p.x % stride != 0 || p.y % stride != 0)
continue;
meshesSmall.push_back(makeColoredBox(frame.value.frameToWorld * framePos, vec4f(frame.value.colorImage(coord)) / 255.0f, 0.002f));
meshesBig.push_back(makeColoredBox(frame.value.frameToWorld * framePos, vec4f(frame.value.colorImage(coord)) / 255.0f, 0.005f));
}
state.frameCloudsSmall[frame.index] = D3D11TriMesh(app.graphics, Shapesf::unifyMeshes(meshesSmall));
state.frameCloudsBig[frame.index] = D3D11TriMesh(app.graphics, Shapesf::unifyMeshes(meshesBig));
}
state.selectedCamera = 0;
}
vec3f RayTracer::traceRay( Scene *scene, const ray& r,
const vec3f& thresh, int depth, isect& i, vector<const SceneObject*>& stack )
{
if( depth>=0
&& thresh[0] > threshold - RAY_EPSILON && thresh[1] > threshold - RAY_EPSILON && thresh[2] > threshold - RAY_EPSILON
&& scene->intersect( r, i ) ) {
// YOUR CODE HERE
// An intersection occured! We've got work to do. For now,
// this code gets the material for the surface that was intersected,
// and asks that material to provide a color for the ray.
// This is a great place to insert code for recursive ray tracing.
// Instead of just returning the result of shade(), add some
// more steps: add in the contributions from reflected and refracted
// rays.
const Material& m = i.getMaterial();
vec3f color = m.shade(scene, r, i);
//calculate the reflected ray
vec3f d = r.getDirection();
vec3f position = r.at(i.t);
vec3f direction = d - 2 * i.N * d.dot(i.N);
ray newray(position, direction);
if(!m.kr.iszero()) {
vec3f reflect = m.kr.multiply(traceRay(scene, newray, thresh.multiply(m.kr), depth-1, stack).clamp());
color += reflect;
}
//calculate the refracted ray
double ref_ratio;
double sin_ang = d.cross(i.N).length();
vec3f N = i.N;
//Decide going in or out
const SceneObject *mi = NULL, *mt = NULL;
int stack_idx = -1;
vector<const SceneObject*>::reverse_iterator itr;
//1 use the normal to decide whether to go in or out
//0: travel through, 1: in, 2: out
char travel = 0;
if(i.N.dot(d) <= -RAY_EPSILON) {
//from outer surface in
//test whether the object has two face
ray test_ray(r.at(i.t) + d * 2 * RAY_EPSILON, -d);
isect test_i;
if(i.obj->intersect(r, test_i) && test_i.N.dot(N) > -RAY_EPSILON) {
//has interior
travel = 1;
}
}
else {
travel = 2;
}
if(travel == 1) {
if(!stack.empty()) {
mi = stack.back();
}
mt = i.obj;
stack.push_back(mt);
}
else if(travel == 2) {
//if it is in our stack, then we must pop it
for(itr = stack.rbegin(); itr != stack.rend(); ++itr) {
if(*itr == i.obj) {
mi = *itr;
vector<const SceneObject*>::iterator ii = itr.base() - 1;
stack_idx = ii - stack.begin();
stack.erase(ii);
break;
}
}
if(!stack.empty()) {
mt = stack.back();
}
}
if(N.dot(d) >= RAY_EPSILON) {
N = -N;
}
ref_ratio = (mi?(mi->getMaterial().index):1.0) / (mt?(mt->getMaterial().index):1.0);
if(!m.kt.iszero() && (ref_ratio < 1.0 + RAY_EPSILON || sin_ang < 1.0 / ref_ratio + RAY_EPSILON)) {
//No total internal reflection
//We do refraction now
double c = N.dot(-d);
direction = (ref_ratio * c - sqrt(1 - ref_ratio * ref_ratio * (1 - c * c))) * N + ref_ratio * d;
newray = ray(position, direction);
vec3f refraction = m.kt.multiply(traceRay(scene, newray, thresh.multiply(m.kt), depth-1, stack).clamp());
color += refraction;
}
if(travel == 1) {
stack.pop_back();
}
else if(travel == 2) {
if(mi) {
stack.insert(stack.begin() + stack_idx, mi);
}
}
return color;
} else {
// No intersection. This ray travels to infinity, so we color
// it according to the background color, which in this (simple) case
// is just black.
if(m_bBackground && bg) {
double u, v;
angleToSphere(r.getDirection(), u, v);
//Scale to [0, 1];
u /= 2 * M_PI;
v /= M_PI;
int tx = int(u * bg_width), ty = bg_height - int(v * bg_height);
return vec3f(bg[3 * (ty * bg_width + tx)] / 255.0, bg[3 * (ty * bg_width + tx) + 1] / 255.0, bg[3 * (ty * bg_width + tx) + 2] / 255.0);
}
else {
return vec3f( 0.0, 0.0, 0.0 );
}
}
}
void Entity::setVelocity(vec3f velocity)
{
velocity.normalize();
mVelocity = velocity * mMaxSpeed;
}
void Shader::setUniform(const std::string &name, const vec3f v, bool warn) {
glUniform3f(uniform(name, warn), v.x(), v.y(), v.z());
}