gdsdk 0.1.1

Gdsii file development kit
Documentation 
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use super::*;
use crate::gds_error;
use crate::gds_record;

#[repr(i16)]
#[derive(Debug)]
pub enum PathEndType {
    Square = 0,
    Round = 1,
    SquareHalfWidth = 2,
    SquareExtend = 4,
}

impl Default for PathEndType {
    fn default() -> Self {
        PathEndType::Square
    }
}

impl TryFrom<&i16> for PathEndType {
    type Error = gds_error::GDSIIError;
    fn try_from(value: &i16) -> Result<Self, Self::Error> {
        match value {
            0 => Ok(PathEndType::Square),
            1 => Ok(PathEndType::Round),
            2 => Ok(PathEndType::SquareHalfWidth),
            4 => Ok(PathEndType::SquareExtend),
            _ => Err(gds_err!(&format!(
                "not valid path end type value: {}",
                value
            ))),
        }
    }
}

impl From<&PathEndType> for i16 {
    fn from(value: &PathEndType) -> Self {
        match value {
            PathEndType::Square => 0,
            PathEndType::Round => 1,
            PathEndType::SquareHalfWidth => 2,
            PathEndType::SquareExtend => 4,
        }
    }
}

/// Gds Path
#[derive(Default, Debug)]
pub struct Path {
    pub layer: i16,
    pub datatype: i16,
    pub width: f64,
    pub end_type: PathEndType,
    pub points: Vec<Points>,
    pub property: Property,
    pub extend_begin: f64,
    pub extend_end: f64,
}

impl GdsObject for Path {
    fn to_gds(&self, scaling: f64) -> Result<Vec<u8>, Box<dyn Error>> {
        let mut data = Vec::<u8>::new();

        // path
        data.extend(4_i16.to_be_bytes());
        data.extend(gds_record::PATH);

        // layer
        data.extend(6_i16.to_be_bytes());
        data.extend(gds_record::LAYER);
        data.extend((self.layer as i16).to_be_bytes());

        // datatype
        data.extend(6_i16.to_be_bytes());
        data.extend(gds_record::DATATYPE);
        data.extend((self.datatype as i16).to_be_bytes());

        // endtype
        data.extend(6_i16.to_be_bytes());
        data.extend(gds_record::PATHTYPE);
        data.extend(i16::from(&self.end_type).to_be_bytes());

        // width
        data.extend(8_i16.to_be_bytes());
        data.extend(gds_record::WIDTH);
        data.extend((f64::round(self.width * scaling) as u32).to_be_bytes());
        // if end_type == 4, which means path end is in extend mode, need to export extend data
        if let PathEndType::SquareExtend = self.end_type {
            data.extend(8_i16.to_be_bytes());
            data.extend(gds_record::BGNEXTN);
            data.extend((f64::round(self.extend_begin * scaling) as u32).to_be_bytes());
            data.extend(8_i16.to_be_bytes());
            data.extend(gds_record::ENDEXTN);
            data.extend((f64::round(self.extend_end * scaling) as u32).to_be_bytes());
        }

        // points
        data.extend((4_i16 + 8 * self.points.len() as i16).to_be_bytes());
        data.extend(gds_record::XY);
        self.points.iter().for_each(|point| {
            let x = point.x * scaling;
            let y = point.y * scaling;
            data.extend((f64::round(x) as i32).to_be_bytes());
            data.extend((f64::round(y) as i32).to_be_bytes());
        });

        // properties
        data.extend(self.property.to_gds(scaling)?);

        // endel
        data.extend(4_i16.to_be_bytes());
        data.extend(gds_record::ENDEL);

        Ok(data)
    }
}