QScriptValue
REcmaLinetypePattern::getDelta
(QScriptContext* context, QScriptEngine* engine)
{
//REcmaHelper::functionStart("REcmaLinetypePattern::getDelta", context, engine);
//qDebug() << "ECMAScript WRAPPER: REcmaLinetypePattern::getDelta";
//QCoreApplication::processEvents();
QScriptValue result = engine->undefinedValue();
// public function: can be called from ECMA wrapper of ECMA shell:
RLinetypePattern* self =
getSelf("getDelta", context);
//Q_ASSERT(self!=NULL);
if (self==NULL) {
return REcmaHelper::throwError("self is NULL", context);
}
if( context->argumentCount() ==
1 && (
context->argument(0).isNumber()
) /* type: double */
){
// prepare arguments:
// argument isStandardType
double
a0 =
(double)
context->argument( 0 ).
toNumber();
// end of arguments
// call C++ function:
// return type 'double'
double cppResult =
self->getDelta(a0);
// return type: double
// standard Type
result = QScriptValue(cppResult);
} else
{
return REcmaHelper::throwError("Wrong number/types of arguments for RLinetypePattern.getDelta().",
context);
}
//REcmaHelper::functionEnd("REcmaLinetypePattern::getDelta", context, engine);
return result;
}
double RExporter::getPatternOffset(double length,
const RLinetypePattern& pattern, int index, double* gap) {
double patternLength = pattern.getPatternLength();
if (patternLength<RS::PointTolerance) {
return 0.0;
}
double po = fabs(pattern.getDashLengthAt(index)) / 2;
for (int i = index - 1; i >= 0; --i) {
po += fabs(pattern.getDashLengthAt(i));
}
double offset = length / 2 - po;
int m = (int) RMath::trunc(offset / patternLength);
offset -= (m + 1) * patternLength;
if (gap != NULL) {
*gap = pattern.getDelta(-offset);
}
return offset;
}