Method mapCartesianToType

src/backend/datapicker/Transform.cpp:157–191

}

Vector3D Transform::mapCartesianToType(QPointF point, const DatapickerImage::ReferencePoints& axisPoints) const {
	switch (axisPoints.type) {
	case DatapickerImage::GraphType::Linear:
		return Vector3D(point.x(), point.y(), 0);
	case DatapickerImage::GraphType::LnXY:
		return Vector3D(exp(point.x()), exp(point.y()), 0);
	case DatapickerImage::GraphType::LnX:
		return Vector3D(exp(point.x()), point.y(), 0);
	case DatapickerImage::GraphType::LnY:
		return Vector3D(point.x(), exp(point.y()), 0);
	case DatapickerImage::GraphType::Log10XY:
		return Vector3D(pow(10, point.x()), pow(10, point.y()), 0);
	case DatapickerImage::GraphType::Log10X:
		return Vector3D(pow(10, point.x()), point.y(), 0);
	case DatapickerImage::GraphType::Log10Y:
		return Vector3D(point.x(), pow(10, point.y()), 0);
	case DatapickerImage::GraphType::PolarInDegree: {
		double r = sqrt(point.x() * point.x() + point.y() * point.y());
		double angle = atan(point.y() / point.x()) * M_180_PI;
		return Vector3D(r, angle, 0);
	}
	case DatapickerImage::GraphType::PolarInRadians: {
		double r = sqrt(point.x() * point.x() + point.y() * point.y());
		double angle = atan(point.y() / point.x());
		return Vector3D(r, angle, 0);
	}
	case DatapickerImage::GraphType::Ternary: {
		double c = (point.y() * 2 * axisPoints.ternaryScale) / M_SQRT3;
		double b = (point.x() * 2 * axisPoints.ternaryScale - c) / 2;
		double a = axisPoints.ternaryScale - b - c;
		return Vector3D(a, b, c);
	}
	}
	return Vector3D(point.x(), point.y(), 0); // should never happen
}