Draw Hermite Curve

Fri Jul 27, 2012 10:31 pm

Draw Hermite Curve using C++ with MFC :

Code:: vector<double> xCof = GetHermiteCoeff(P0.first, T0.first, P3.first, T1.first); vector<double> yCof = GetHermiteCoeff(P0.second, T0.second, P3.second, T1.second); if(numPix < 2) return; double dt = 1.0 / (numPix - 1); tagLOGPEN tp; tp.lopnColor = color; tp.lopnStyle = PS_SOLID; tp.lopnWidth.x = 1; HPEN p = CreatePenIndirect(&tp); SelectObject(hdc, p); for(double t = 0; t <= 1; t += dt) { vector<double> vt(4); vt[3] = 1; vt[2] = t*vt[3]; vt[1] = t*vt[2]; vt[0] = t*vt[1]; int x = round(DotProduct(xCof,vt)); int y = round(DotProduct(yCof,vt)); if(t==0) { MoveToEx(hdc,x,y,NULL); SetPixel(hdc, x, y, color); } else LineTo(hdc,x,y); } DeleteObject(p);