本文整理汇总了C++中dy函数的典型用法代码示例。如果您正苦于以下问题：C++ dy函数的具体用法？C++ dy怎么用？C++ dy使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了dy函数的20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，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: if
/*
check if (m_skin_filter != 0 && m_skin_filter->status() == 0) before call
*/
void HaarDetector::skin_filter(char** r, char** g, char** b, const vec2Di* search_mask)
{
float ivec[3] = {0.0f, 0.0f, 0.0f}; //0.0 ... 1.0f range
float ovec = 0.0f;
m_search_mask->set(0);
unsigned int skin_pixels = 0;
unsigned int total_pixels = 0;
for (unsigned int y = dy(); y < m_search_mask->height() - dy(); y++) {
for (unsigned int x = dx(); x < m_search_mask->width() - dx(); x++) {
total_pixels++;
if (search_mask != 0 && ((*search_mask)(y, x) == 0))
continue;
ivec[0] = (float)((int)r[y][x] + 128) / 255.0f;
ivec[1] = (float)((int)g[y][x] + 128) / 255.0f;
ivec[2] = (float)((int)b[y][x] + 128) / 255.0f;
if (m_skin_filter->classify(ivec, &ovec) >= 0) {
(*m_search_mask)(y, x) = 1;
skin_pixels++;
}
}
}
m_skin_amount = float(skin_pixels) / float(total_pixels);
m_tmp_search_mask->dilate(*m_search_mask, 5, 5);
m_search_mask->erode(*m_tmp_search_mask, 5, 5);
}
开发者ID:oshaar，项目名称:agenteinteligente-xiller，代码行数:33，代码来源:HaarDetector.cpp
示例2: STKUNIT_UNIT_TEST
STKUNIT_UNIT_TEST(function, stringFunction_derivative)
{
EXCEPTWATCH;
for (unsigned ipts = 0; ipts < NPTS; ipts++)
{
double x = testpoints[ipts][0];
double y = testpoints[ipts][1];
double z = testpoints[ipts][2];
double t = testpoints[ipts][3];
// start_demo_stringFunction_derivative
StringFunction sfxy(" x - y ");
StringFunction dsfxy_y("-1");
MDArrayString dy(1,1);
dy(0,0)="y";
std::string dy1[1][1] = {{"y"}};
std::cout << "dy1= " << dy1[0][0] << std::endl;
//Teuchos::RCP<Function> dsfxy_y_1 = sfxy.derivative(MDArrayString_from(dy1));
//Teuchos::RCP<Function> dsfxy_y_1 = sfxy.derivative(dy);
Teuchos::RCP<Function> dsfxy_y_1 = sfxy.derivative_test(dy);
double dvxy = eval(x, y, z, t, *dsfxy_y_1);
double dvxy1 = eval(x, y, z, t, dsfxy_y);
// the two different functions should give the same result
STKUNIT_EXPECT_DOUBLE_EQ(dvxy, dvxy1);
// and they should give the same result as C++
STKUNIT_EXPECT_DOUBLE_EQ(dvxy, -1.0);
// end_demo
}
}
开发者ID:gitter-badger，项目名称:quinoa，代码行数:34，代码来源:UnitTestStringFunction.cpp
示例3: main
int main() {
const int NN = 5;
const int NNN = 5000;
double C = 2.2;
for (double k = -C; k < C; k += (0.1 * C)) {
double x_0 = C;
double y_0 = k;
double x = x_0;
double y = y_0;
double c = 0.003;
c *= fabs(alpha) / alpha;
printf("draw (%1.4lf*u, %1.4lf*u)\n", x, y);
for (int i = 0; i < NNN; i++) {
double ddx = dx(x, y);
double ddy = dy(x, y);
double len = l(ddx, ddy);
x += ddx * c;
y += ddy * c;
if (!(i % NN))
printf("--(%1.4lf*u, %1.4lf*u)\n", x, y);
if (l2(x, y) > 300) {
printf("unstable point! \n");
return -1;
}
}
printf("withpen pencircle scaled 1pt;\n");
}
for (double k = -C; k < C; k += (0.1 * C)) {
double x_0 = k;
double y_0 = -C;
double x = x_0;
double y = y_0;
double c = 0.003;
c *= fabs(alpha) / alpha;
printf("draw (%1.4lf*u, %1.4lf*u)\n", x, y);
for (int i = 0; i < NNN; i++) {
double ddx = dx(x, y);
double ddy = dy(x, y);
double len = l(ddx, ddy);
x += ddx * c;
y += ddy * c;
if (!(i % NN))
printf("--(%1.4lf*u, %1.4lf*u)\n", x, y);
if (l2(x, y) > 300) {
printf("unstable point! \n");
return -1;
}
}
printf("withpen pencircle scaled 1pt;\n");
}
return 0;
}
开发者ID:tokar1，项目名称:mech-math，代码行数:59，代码来源:main.cpp
示例4: w
double MQ_2::laplace(double x, double y) {
double result = 0;
for (int i = 0; i < _data.size() / 4; i++) {
result += 2.0 * w(i) / core(i, x, y) \
- w(i) * (dx(i, x) * dx(i, x) + dy(i, y) * dy(i, y)) / pow(core(i, x, y), 3);
}
return result;
}
开发者ID:xni，项目名称:Galperin，代码行数:8，代码来源:MQ_2.cpp
示例5: drawSlider
void drawSlider(float y,float value,bool glow,const char *str) {
float width = .18;
float height = .05;
float x5 = dx(.5);
float x65 = dx(.5+width);
float xlerp = dx(lerp(.5,.5+width,value));
float y05 = dy(y+height);
al_draw_filled_triangle(x5,y05,x65,y05,x65,dy(y),COLOR_SCND);
al_draw_filled_triangle(x5,y05,xlerp,y05,xlerp,dy(lerp(y+height,y,value)),glow?COLOR_HGHL:COLOR_TEXT);
al_draw_text(data.font_Regular52,glow?COLOR_HGHL:COLOR_TEXT,px(.49),py(y),ALLEGRO_ALIGN_RIGHT,str);
}
开发者ID:bencz，项目名称:BCC_PI2_chernobyl，代码行数:11，代码来源:settings.c
示例6: SolveKKTSystem
/**
* Solve the following KKT system (2.10) of [AHO98]:
*
* [ 0 A^T I ] [ dsx ] = [ rd ]
* [ A 0 0 ] [ dy ] = [ rp ]
* [ E 0 F ] [ dsz ] = [ rc ]
* \---- M ----/
*
* where
*
* A = [ Asparse ]
* [ Adense ]
* dy = [ dysparse dydense ]
* E = Z sym I
* F = X sym I
*
*/
static inline void
SolveKKTSystem(const arma::sp_mat& Asparse,
const arma::mat& Adense,
const arma::mat& Z,
const arma::mat& M,
const arma::mat& F,
const arma::vec& rp,
const arma::vec& rd,
const arma::vec& rc,
arma::vec& dsx,
arma::vec& dysparse,
arma::vec& dydense,
arma::vec& dsz)
{
arma::mat Frd_rc_Mat, Einv_Frd_rc_Mat,
Einv_Frd_ATdy_rc_Mat, Frd_ATdy_rc_Mat;
arma::vec Einv_Frd_rc, Einv_Frd_ATdy_rc, dy;
// Note: Whenever a formula calls for E^(-1) v for some v, we solve Lyapunov
// equations instead of forming an explicit inverse.
// Compute the RHS of (2.12)
math::Smat(F * rd - rc, Frd_rc_Mat);
SolveLyapunov(Einv_Frd_rc_Mat, Z, 2. * Frd_rc_Mat);
math::Svec(Einv_Frd_rc_Mat, Einv_Frd_rc);
arma::vec rhs = rp;
const size_t numConstraints = Asparse.n_rows + Adense.n_rows;
if (Asparse.n_rows)
rhs(arma::span(0, Asparse.n_rows - 1)) += Asparse * Einv_Frd_rc;
if (Adense.n_rows)
rhs(arma::span(Asparse.n_rows, numConstraints - 1)) += Adense * Einv_Frd_rc;
// TODO(stephentu): use a more efficient method (e.g. LU decomposition)
if (!arma::solve(dy, M, rhs))
Log::Fatal << "PrimalDualSolver::SolveKKTSystem(): Could not solve KKT "
<< "system." << std::endl;
if (Asparse.n_rows)
dysparse = dy(arma::span(0, Asparse.n_rows - 1));
if (Adense.n_rows)
dydense = dy(arma::span(Asparse.n_rows, numConstraints - 1));
// Compute dx from (2.13)
math::Smat(F * (rd - Asparse.t() * dysparse - Adense.t() * dydense) - rc,
Frd_ATdy_rc_Mat);
SolveLyapunov(Einv_Frd_ATdy_rc_Mat, Z, 2. * Frd_ATdy_rc_Mat);
math::Svec(Einv_Frd_ATdy_rc_Mat, Einv_Frd_ATdy_rc);
dsx = -Einv_Frd_ATdy_rc;
// Compute dz from (2.14)
dsz = rd - Asparse.t() * dysparse - Adense.t() * dydense;
}
开发者ID:YaweiZhao，项目名称:mlpack，代码行数:70，代码来源:primal_dual_impl.hpp
示例7: switch
double GLGPU3DDataset::Flux(int face) const
{
// TODO: pre-compute the flux
switch (face) {
case 0: return -dx() * dy() * Bz();
case 1: return -dy() * dz() * Bx();
case 2: return -dz() * dx() * By();
case 3: return dx() * dy() * Bz();
case 4: return dy() * dz() * Bx();
case 5: return dz() * dx() * By();
default: assert(false);
}
return 0.0;
}
开发者ID:ResearchEngr，项目名称:vortexfinder2，代码行数:14，代码来源:GLGPU3DDataset.cpp
示例8: main
int main() {
float x0, y0, h;
int j, m;
//entrada de dados
printf("Digite o valor de x inicial: \n");
scanf("%f", &x0);
printf("Digite o valor de y inicial: \n");
scanf("%f", &y0);
printf("Digite o valor do espacamente h: \n");
scanf("%f", &h);
printf("Informe o numero de subintervalos : \n");
scanf("%d", &m);
float x[m+1], y[m+1];
x[0] = x0;
y[0] = y0;
// Calculo pelo metodo de Euler
for(j = 0; j < m; j++) {
y[j+1] = y[j] + h*dy(x[j], y[j]);
x[j+1] = x[j] + h;
}
// mostrando o resultado
printf("Os valores de x e y sao: \n");
for(j = 0; j <= m; j++) {
printf("%.4f, %.4f\n", x[j], y[j]);
}
return 0;
}
开发者ID:FelipeGodoy，项目名称:20141PC，代码行数:33，代码来源:MetodoDeEuler.cpp
示例9: qDebug
void Graph::layoutKamadaKawai( int maxiter, qreal epsilon, bool initialize)
{
qDebug() << "Laying out KamadaKawai";
if( initialize )
layoutRandom( 100.0 );
//layoutNGon();
if(maxiter < 0)
maxiter = 65536;
for(int iteration = 0; iteration < maxiter; ++iteration) {
uint id = 0;
qreal maxdelta_m = 0.0;
for(QMap<uint,Vertex*>::const_iterator i = m_vertices.constBegin();
i != m_vertices.constEnd(); ++i )
{
qreal curdelta_m = qAbs(delta_m(*i));
//qDebug() << "curdelta_m,maxdelta_m"<< curdelta_m << "\t" << maxdelta_m;
if( curdelta_m >= maxdelta_m ) {
maxdelta_m = curdelta_m;
id = (*i)->id();
}
}
Vertex *m = m_vertices.value(id);
qreal curdx = dx(m);
qreal curdy = dy(m);
qDebug() << "Picked node with id=" << id <<", moving by" << QPointF(curdx,curdy) << " to "<< m->nodePos();
m->setNodePos( m->nodePos() + QPointF(curdx,curdy) );
if(qAbs(delta_m(m)) < epsilon ) {
qDebug() << "Breaking early: iteration, delta_m, epsilon" << iteration << qAbs(delta_m(m)) << epsilon;
break;
}
}
}
开发者ID:sengels，项目名称:kfbgraph，代码行数:32，代码来源:Graph.cpp
示例10: main
void main() {
IplImage* img;
CvCapture* cap=cvCaptureFromCAM(0);
cvNamedWindow("Line Counter", 1);
CvFont* font1=new CvFont;
CvFont* font2=new CvFont;
cvInitFont(font1, CV_FONT_HERSHEY_SIMPLEX, 0.5f, 1.0f, 0, 3, 8);
cvInitFont(font2, CV_FONT_HERSHEY_SIMPLEX, 0.5f, 1.0f, 0, 2, 8);
int val=0, axx=0, bxx=0;
char text[8];
for (;;) {
img = cvQueryFrame(cap);
if (!img) break;
IplImage* gray1=cvCreateImage(cvSize(img->width, img->height), 8, 1);
IplImage* edge1=cvCreateImage(cvSize(img->width, 16), 8, 1);
cvCvtColor(img, gray1, 7);
extract(gray1, edge1);
dy(edge1, edge1);
cvThreshold(edge1, edge1, 10, 255, CV_THRESH_BINARY_INV);
val=count(edge1);
if (val==0&&axx==0) { axx=1; }
if (val==2&&axx==1) { axx=0; bxx++; }
sprintf(text, "%i", bxx);
comb(gray1, edge1);
cvPutText(gray1, text, cvPoint(10, 160), font1, cvScalarAll(255));
cvPutText(gray1, text, cvPoint(10, 160), font2, cvScalarAll(0));
cvShowImage("Line Counter", gray1);
if (cvWaitKey(5) > 0) break;
cvReleaseImage(&gray1);
cvReleaseImage(&edge1);
}
}
开发者ID:ArdWar，项目名称:Kuliah，代码行数:32，代码来源:LineCounter.cpp
示例11: back
Point back() const
{
if (begin_ == end_) {
BOOST_THROW_EXCEPTION(std::out_of_range("back() cannot be called on empty PointRange."));
}
return Point(end_.x - dx(), end_.y - dy());
}
开发者ID:martong，项目名称:nng2014，代码行数:7，代码来源:PointRange.hpp
示例12: src
void SobelTest::testManual1()
{
m_operator->setParameter(Sobel::PARAMETER_DATA_FLOW, runtime::Enum(Sobel::MANUAL));
m_operator->initialize();
m_operator->activate();
runtime::DataContainer src(new cvsupport::Image("lenna.jpg", cvsupport::Image::GRAYSCALE));
runtime::DataContainer dst(new cvsupport::Image(1000000));
runtime::Enum ddepth(1);
runtime::UInt32 dx(2);
runtime::UInt32 dy(0);
runtime::UInt32 ksize(3);
runtime::Float64 scale(1);
runtime::Float64 delta(0);
m_operator->setInputData(Sobel::INPUT_SRC, src);
m_operator->setInputData(Sobel::INPUT_DST, dst);
m_operator->setParameter(Sobel::PARAMETER_DDEPTH, ddepth);
m_operator->setParameter(Sobel::PARAMETER_DX, dx);
m_operator->setParameter(Sobel::PARAMETER_DY, dy);
m_operator->setParameter(Sobel::PARAMETER_KSIZE, ksize);
m_operator->setParameter(Sobel::PARAMETER_SCALE, scale);
m_operator->setParameter(Sobel::PARAMETER_DELTA, delta);
runtime::DataContainer dstResult = m_operator->getOutputData(Sobel::OUTPUT_DST);
runtime::ReadAccess dstAccess(dstResult);
cvsupport::Image::save("SobelTest_testManual1_dst.png", dstAccess.get<runtime::Image>());
}
开发者ID:uboot，项目名称:stromx-opencv，代码行数:29，代码来源:SobelTest.cpp
示例13: dx
TextStream& SVGFEOffset::externalRepresentation(TextStream& ts) const
{
ts << "[type=OFFSET] ";
SVGFilterEffect::externalRepresentation(ts)
<< " [dx=" << dx() << " dy=" << dy() << "]";
return ts;
}
开发者ID:jackiekaon，项目名称:owb-mirror，代码行数:7，代码来源:SVGFEOffset.cpp
示例14: setForeground
//
// Process the Expose event: draw in the window
//
void MyWindow::onExpose(XEvent& event) {
// Erase a window
setForeground(getBackground());
fillRectangle(m_RWinRect);
// Draw the coordinate axes
drawAxes("black", true, "gray");
// Draw a graph of function
setForeground("red");
drawGraphic();
// Draw a cross on mouse click
if (clicked) {
if (mouseButton == Button1)
setForeground("blue"); // Left button
else if (mouseButton == Button2)
setForeground("SeaGreen"); // Middle button
else if (mouseButton == Button3)
setForeground("brown"); // Right mouse button
R2Vector dx(0.2, 0.);
R2Vector dy(0., 0.2);
drawLine(lastClick-dx, lastClick+dx);
drawLine(lastClick-dy, lastClick+dy);
}
}
开发者ID:tokar1，项目名称:mech-math，代码行数:29，代码来源:func.cpp
示例15: cosf
void BaseApp::controls(){
// Compute directional vectors from euler angles
float cosX = cosf(wx), sinX = sinf(wx), cosY = cosf(wy), sinY = sinf(wy);
vec3 dx(cosY, 0, sinY);
vec3 dy(-sinX * sinY, cosX, sinX * cosY);
vec3 dz(-cosX * sinY, -sinX, cosX * cosY);
vec3 dir(0, 0, 0);
if (keys[leftKey]) dir -= dx;
if (keys[rightKey]) dir += dx;
if (keys[downKey]) dir -= dy;
if (keys[upKey]) dir += dy;
if (keys[backwardKey]) dir -= dz;
if (keys[forwardKey]) dir += dz;
float lenSq = dot(dir, dir);
if (lenSq > 0){
moveCamera(dir * (1.0f / sqrtf(lenSq)));
}
dir = vec3(0, 0, 0);
if (xStrafeAxis >= 0) dir += joystickAxes[xStrafeAxis] * (invertXStrafeAxis? -dx : dx);
if (yStrafeAxis >= 0) dir += joystickAxes[yStrafeAxis] * (invertYStrafeAxis? -dy : dy);
if (zStrafeAxis >= 0) dir += joystickAxes[zStrafeAxis] * (invertZStrafeAxis? -dz : dz);
if (dot(dir, dir) > 0){
moveCamera(dir);
}
if (xTurnAxis >= 0) wx += (invertXTurnAxis? -2.0f : 2.0f) * joystickAxes[xTurnAxis] * frameTime;
if (yTurnAxis >= 0) wy += (invertYTurnAxis? -2.0f : 2.0f) * joystickAxes[yTurnAxis] * frameTime;
}
开发者ID:DanielNeander，项目名称:my-3d-engine，代码行数:32，代码来源:BaseApp.cpp
示例16: dx
float ImgPatch::cornerValue()
{
cv::Mat dx, dy;
cv::Sobel(cleanedPatch, dx, CV_32F, 1, 0, 1);
cv::Sobel(cleanedPatch, dy, CV_32F, 0, 1, 1);
cv::Mat removeBorderDx = dx(cv::Rect(1, 1, dx.cols-2, dx.rows-2)).clone();
cv::Mat removeBorderDy = dy(cv::Rect(1, 1, dy.cols-2, dy.rows-2)).clone();
cv::Mat IX2 = removeBorderDx.mul(removeBorderDx);
cv::Mat IY2 = removeBorderDy.mul(removeBorderDy);
cv::Mat IXY = removeBorderDx.mul(removeBorderDy);
cv::Mat_<float> A = cv::Mat::zeros(2,2,CV_32F);
A[0][0] = sum(IX2).val[0];
A[0][1] = sum(IXY).val[0];
A[1][0] = sum(IXY).val[0];
A[1][1] = sum(IY2).val[0];
cv::Mat eigenA;
eigen(A, eigenA);
//For half_patch_size = 4, we get the number "6"
if ((eigenA.at<float>(1,0) >= 6)&&(eigenA.at<float>(1,0)/eigenA.at<float>(0,0)>0.5))
{
return eigenA.at<float>(1,0);
}
else
{
return 0.0f;
}
}
开发者ID:limingyangpro，项目名称:Local-Geometric-Consensus-Examples，代码行数:31，代码来源:scaleddetector.cpp
示例17: dydxnew
void StepperDopr853<D>::step(const Doub htry,D &derivs) {
VecDoub dydxnew(n);
Doub h=htry;
for (;;) {
dy(h,derivs);
Doub err=error(h);
if (con.success(err,h)) break;
if (std::abs(h) <= std::abs(x)*EPS) {
// <added>
std::cerr << "\nh=" << h << "\tx=" << x
<< "\tstd::abs(h)=" << std::abs(h) << "\tstd::abs(x)=" << std::abs(x)
<< "\tEPS=" << EPS << std::endl;
// </added>
Throw1WithMessage("stepsize underflow in StepperDopr853");
}
}
derivs(x+h,yout,dydxnew);
if (dense)
prepare_dense(h,dydxnew,derivs);
dydx=dydxnew;
y=yout;
xold=x;
x += (hdid=h);
hnext=con.hnext;
}
开发者ID:moble，项目名称:Triton，代码行数:25，代码来源:StepperDopr853a.hpp
示例18: Domain
Vector ADFun<Base>::ForOne(const Vector &x, size_t j)
{ size_t j1;
size_t n = Domain();
size_t m = Range();
// check Vector is Simple Vector class with Base type elements
CheckSimpleVector<Base, Vector>();
CPPAD_ASSERT_KNOWN(
x.size() == n,
"ForOne: Length of x not equal domain dimension for f"
);
CPPAD_ASSERT_KNOWN(
j < n,
"ForOne: the index j is not less than domain dimension for f"
);
// point at which we are evaluating the second partials
Forward(0, x);
// direction in which are are taking the derivative
Vector dx(n);
for(j1 = 0; j1 < n; j1++)
dx[j1] = Base(0);
dx[j] = Base(1);
// dimension the return value
Vector dy(m);
// compute the return value
dy = Forward(1, dx);
return dy;
}
开发者ID:iagomosqueira，项目名称:FLasher，代码行数:35，代码来源:for_one.hpp
示例19: main
int main(){
int t;
scanf("%d",&t);
while(t--) {
int a,b,c;
scanf("%d%d%d",&a,&b,&c);
int x=dy(a,b,c);
switch(x){
case 0:printf("Sunday\n");
break;
case 1:printf("Monday\n");
break;
case 2:printf("Tuesday\n");
break;
case 3:printf("Wednesday\n");
break;
case 4:printf("Thursday\n");
break;
case 5:printf("Friday\n");
break;
case 6:printf("Saturday\n");
break;
}
}
return 0;
}
开发者ID:enfinet，项目名称:spoj，代码行数:26，代码来源:CODEIT03.c
示例20: TestOdeSystemTwo
void TestOdeSystemTwo()
{
Ode2 ode2;
std::vector<double> dy(1);
ode2.EvaluateYDerivatives(2.0, ode2.GetInitialConditions(), dy);
TS_ASSERT_DELTA(dy[0], 8.0, tol);
}
开发者ID:ktunya，项目名称:ChasteMod，代码行数:7，代码来源:TestAbstractOdeSystem.hpp
注：本文中的dy函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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