/***
* FUNCTION: Integrates equation using Simpson method
* RETURN: Definite integral of equation
* PARAM: [IN] equation - equation to integrate
* PARAM: [IN] start - left integration border
* PARAM: [IN] end - right integration border
* PARAM: [IN] numIterations - number of iterations
* SEE: write me
* AUTHOR: Eliseev Dmitry
***/
Equation ParametricIntegrator::Simpson( const Equation &equation, const double start, const double end, const unsigned int numIterations )
{
unsigned int i = 0;
/* Timer creation */
Timer timer;
/* Result equation */
Equation result = Equation(start) + Equation(end);
/* Odd members */
Equation oddResult("0");
for (i = 1; i <= 2 * numIterations - 1; i+=2)
oddResult += equation.GetEquation(start + (end - start) * i / (2 * numIterations));
/* Even members */
Equation evenResult("0");
for (i = 2; i <= 2 * numIterations - 2; i+=2)
evenResult += equation.GetEquation(start + (end - start) * i / (2 * numIterations));
/* Add calculated values */
result += Equation("4") * oddResult + Equation("2") * evenResult;
/* That's it */
result *= Equation((end - start) / (6 * numIterations));
result.Simplify();
/* Determine spent time */
numSeconds = timer.GetTimePassed();
return result;
} /* End of 'Integrator::Simpson' method */
int main(int argc, char** argv)
{
Equation e1[2] = {Equation(-2.0, 1.0, -1.0), Equation(0.0, 0.0, 1.0)};
Equation e2(0.0, 1.0, 0.0);
std::cout << "---------------test1-----------------\n";
std::cout << "[" << e1[0] << " /\\ "<< e1[1] << "]\t==>\t[" << e2 << "]? ";
int ret = Equation::multi_imply(e1, 2, e2);
switch(ret) {
case 0: std::cout << "False\n"; break;
case 1: std::cout << "True\n"; break;
case 2: std::cout << "Could not answer query\n"; break;
case 3: std::cout << "Timeout.\n"; break;
default: std::cout << "Unhandled error\n";
}
/*
Equation e3[2] = {Equation(-2.0, 1.0), Equation(5.0, -1.0)};
Equation e4(-1.0, 1.0);
std::cout << "---------------test2-----------------\n";
std::cout << "[" << e3[0] << " /\\ "<< e3[1] << "]\t==>\t[" << e4 << "]? ";
ret = Equation::multi_imply(e3, 2, e4);
switch(ret) {
case 0: std::cout << "False\n"; break;
case 1: std::cout << "True\n"; break;
case 2: std::cout << "Could not answer query\n"; break;
case 3: std::cout << "Timeout.\n"; break;
default: std::cout << "Unhandled error\n";
}
Equation e5[2] = {Equation(-2.0, 1.0), Equation(5.0, -1.0)};
Equation e6(-3.0, 1.0);
std::cout << "---------------test2-----------------\n";
std::cout << "[" << e5[0] << " /\\ "<< e5[1] << "]\t==>\t[" << e6 << "]? ";
ret = Equation::multi_imply(e5, 2, e6);
switch(ret) {
case 0: std::cout << "False\n"; break;
case 1: std::cout << "True\n"; break;
case 2: std::cout << "Could not answer query\n"; break;
case 3: std::cout << "Timeout.\n"; break;
default: std::cout << "Unhandled error\n";
}
*/
return 0;
}
Equation Equation::randomQuadraticEquation( int nGen , int nVar , int len )
{
int l = len+2*nVar;
vector< int > result( l , 0 );
// assign positions to variables
for( int v=0 ; v<nVar ; ++v ) { // for all variables
for( int p=0 ; p<2 ; ++p ) { // for each variable twice
// loop until the position and power for a variable is found
bool posFound = false;
while( !posFound ) {
int pos = RandLib::ur.irand( 0 , l-1 );
if( result[pos]!=0 )
continue;
int l_pos = pos==0 ? l-1 : pos-1;
int r_pos = pos==l-1 ? 0 : pos+1;
int var = RandLib::ur.irand( 0 , 1 ) ? v+nGen+1 : -v-nGen-1;
if( result[l_pos]+var==0 || result[r_pos]+var==0 )
continue;
result[pos] = var;
posFound = true;
}
}
}
for( int pos=0 ; pos<l ; ++pos ) {
if( result[pos]!=0 )
continue;
int l_pos = pos==0 ? l-1 : pos-1;
int r_pos = pos==l-1 ? 0 : pos+1;
while( 1 ) {
int gen = RandLib::ur.irand( 0 , nGen-1 );
gen = RandLib::ur.irand( 0 , 1 ) ? gen+1 : -gen-1;
if( result[l_pos]+gen==0 || result[r_pos]+gen==0 )
continue;
result[pos] = gen;
break;
}
}
return Equation( nGen , nVar , Word(result) );
}
Equation instantiate_equation(Equation innerEq, Name variable, Real index, VarSymbolTable &symbolTable) {
VarSymbolTable v=symbolTable;
VarInfo vinfo = VarInfo(TypePrefixes(1,parameter), "Integer", Option<Comment>(), Modification(ModEq(Expression(index))));
v.insert(variable,vinfo);
if (is<Equality>(innerEq)) {
Equality eqeq = boost::get<Equality>(innerEq);
Expression l=eqeq.left(), r=eqeq.right();
//std::cout << "Left= " << l << " right " << r << std::endl;
return Equality(Visit(Modelica::PartEvalExp(v),l),Visit(Modelica::PartEvalExp(v),r));
} else {
ERROR("process_for_equations - instantiate_equation:\n"
"Incorrect equation type or not supported yet.\n");
}
return Equation();
}
void CsFiringRateStimulus::Load(CStdXml &oXml)
{
ExternalStimulus::Load(oXml);
oXml.IntoElem(); //Into Simulus Element
TargetNodeID(oXml.GetChildString("TargetNodeID"));
ConstantRate(oXml.GetChildFloat("ConstantRate", m_fltConstantRate));
Equation(oXml.GetChildString("Equation", ""));
Coverage(oXml.GetChildString("Coverage", "WholePopulation"));
if(oXml.FindChildElement("Cells", false))
LoadCellsToStim(oXml);
oXml.OutOfElem(); //OutOf Simulus Element
}
int main(){
double a;
double b;
double c;
double x;
printf("Compute \"ax+b=c\"¡ú_¡ú\nPlease input a:");
scanf("%lf", &a);
printf("Please input b:");
scanf("%lf", &b);
printf("Please input c:");
scanf("%lf", &c);
if (a == 0){
printf("\n\tError!");
}
else{
x = Equation(a, b, c);
printf("\t\t%.10gx+%.10g=%.10g\n\t\tx=%.10g", a, b, c, x);
}
}
bool CsFiringRateStimulus::SetData(const std::string &strDataType, const std::string &strValue, bool bThrowError)
{
std::string strType = Std_CheckString(strDataType);
if(ExternalStimulus::SetData(strDataType, strValue, false))
return true;
if(strType == "CONSTANTRATE")
{
ConstantRate((float) atof(strValue.c_str()));
return true;
}
if(strType == "COVERAGE")
{
Coverage(strValue);
return true;
}
if(strType == "EQUATION")
{
Equation(strValue);
return true;
}
if(strType == "CELLSTOSTIM")
{
CellsToStim(strValue);
return true;
}
//If it was not one of those above then we have a problem.
if(bThrowError)
THROW_PARAM_ERROR(Al_Err_lInvalidDataType, Al_Err_strInvalidDataType, "Data Type", strDataType);
return false;
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
//
auto camera = CamMatrixf::Orbiting(
Vec3f(),
5.5,
FullCircles(time / 10.0),
Degrees(45.0 + SineWave(time / 7.0)*30.0)
);
// Render the plane
plane_prog.Use();
plane_camera_matrix.Set(camera);
plane_model_matrix.Set(
ModelMatrixf::Translation(0.0f, -1.1f, 0.0f)
);
gl.Bind(plane);
plane_instr.Draw(plane_indices);
// Render the shape
shape_prog.Use();
auto clip_plane = Planef::FromNormal(Vec3f(Data(camera.Row(2)), 3));
shape_clip_plane.Set(clip_plane.Equation());
shape_camera_matrix.Set(camera);
shape_model_matrix.Set(
ModelMatrixf::RotationX(FullCircles(time / 12.0))
);
gl.Bind(shape);
gl.Enable(Capability::CullFace);
gl.Enable(Functionality::ClipDistance, 0);
gl.FrontFace(make_shape.FaceWinding());
GLfloat clip_dirs[2] = {-1.0f, 1.0f};
Face facing_dirs[2] = {Face::Front, Face::Back};
for(int c=0; c!=2; ++c)
{
shape_clip_direction.Set(clip_dirs[c]);
for(int f=0; f!=2; ++f)
{
Texture::CopyImage2D(
Texture::Target::_2D,
0,
PixelDataInternalFormat::RGB,
tex_side == width ? 0 : (width - tex_side) / 2,
tex_side == height? 0 : (height- tex_side) / 2,
tex_side, tex_side,
0
);
gl.CullFace(facing_dirs[f]);
shape_instr.Draw(shape_indices);
}
}
gl.Disable(Functionality::ClipDistance, 0);
gl.Disable(Capability::CullFace);
}