Function msDrawPieChart

mapchart.c:219–245

}

int msDrawPieChart(mapObj *map, imageObj *image,
        pointObj *center, float diameter,
        float *values, styleObj **styles, int numvalues)
{
    int i;
    double dTotal=0.,start=0;

    for(i=0;i<numvalues;i++)
    {
        if(values[i]<0.) {
            msSetError(MS_MISCERR, "cannot draw pie charts for negative values", "msDrawPieChart()");
            return MS_FAILURE;
        }
        dTotal+=values[i];
    }

    for(i=0; i < numvalues; i++)
    {
        float angle = values[i];
        if(angle==0) continue; /*no need to draw. causes artifacts with outlines*/
        angle*=360.0/dTotal;
        msDrawPieSlice(&map->symbolset,image, center, styles[i], diameter/2., start, start+angle);
        
        start+=angle;
    }
    return MS_SUCCESS;
}

int getNextShape(mapObj *map, layerObj *layer, float *values, styleObj **styles, shapeObj *shape) {
    int status;