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sxy_series.cpp

Go to the documentation of this file.

// =======================================================================

char *series_cpp = "$Id: sxy_series.cpp,v 1.5 2003/01/06 22:06:48 clinio Exp $";

// =======================================================================

#include <float.h>
#include <xy.h>

#include "sxy_series.h"

// =======================================================================

// .......................................................................

double SXYSeries::getAnInvalidNumber(void) {
   return FLT_MAX + 10.0;
}

// .......................................................................

unsigned int SXYSeries::isValidNumber(double n) {
   return (n > -FLT_MAX) && (n < FLT_MAX);
}

// .......................................................................

void SXYSeries::getSeveralLimits( SXYVector<SXYSeries*> *vector, 
double& xmin, double& xmax, double& ymin, double& ymax ) {
   xmin = FLT_MAX; xmax = -FLT_MAX;
   ymin = FLT_MAX; ymax = -FLT_MAX;

   unsigned int num_series = vector->getLength();
   for (unsigned int s = 0; s < num_series; s++) {
       SXYSeries *srs = vector->getElement(s);
       assert(srs);
       double xi, xa, yi, ya;
       srs->getLimits(xi, xa, yi, ya);
       if (xi < xmin) xmin = xi;
       if (xa > xmax) xmax = xa;
       if (yi < ymin) ymin = yi;
       if (ya > ymax) ymax = ya;
    }
}

// .......................................................................

void SXYSeries::writePoint(unsigned int n, double x, double y) {
   assert(0);
}

// .......................................................................

void SXYSeries::domain (double begin, double end) {
  // Não faz nada.
}

// .......................................................................

void SXYSeries::domain (double* begin, double* end) const {
  // Usa um domínio de menos infinito a mais infinito
  *begin = -FLT_MAX;
  *end = FLT_MAX;
}

// .......................................................................

xybool SXYSeries::changPoint(unsigned int, double, double) { 
   // Não tem troca de pontos diretamente sobre os dados originais
   return xyfalse; 
}

// .......................................................................
void SXYSeries::getLimits( double& xmin, double& xmax,
double& ymin, double& ymax ) {
   xmin = FLT_MAX; xmax = -FLT_MAX;
   ymin = FLT_MAX; ymax = -FLT_MAX;
   for( unsigned int i = 0; i < getNumPoints(); i++ ) {
      double x, y;
      unsigned int has_point = this->getPoint( i, x, y );
      if ( has_point ) {
         if ( x < xmin ) xmin = x;
         if ( x > xmax ) xmax = x;
         if ( y < ymin ) ymin = y;
         if ( y > ymax ) ymax = y;
      }
   }

   if ( xmin > xmax ) {
      double tmp = xmin;
      xmin = xmax; xmax = tmp;
   }

   if ( ymin > ymax ) {
      double tmp = ymin;
      ymin = ymax; ymax = tmp;
   }
}

// .......................................................................

unsigned int SXYSeries::numPoints (void) {
   // Repasse a outro método a ser redefinido.
   unsigned int np = getNumPoints();
   return np;
}

// .......................................................................

xybool SXYSeries::point (int n, double& x, double& y) {
   // Repasse a outro método a ser redefinido.
   unsigned int np = getNumPoints();
   unsigned int i = n;
   if ( i < 0 || i >= np ) return xyfalse;
   unsigned int result = getPoint(n, x, y);
   return result ? xytrue : xyfalse;
}

// .......................................................................

SXYSeries::SXYSeries() { 
  // Não faz nada.
}

// .......................................................................

SXYSeries::~SXYSeries() {
  // Não faz nada.
}

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SXY
Tecgraf / PUC-Rio - Computer Graphics Technology Group