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package libs
import (
"math"
"strconv"
)
func (s SassNumber) String() string {
return strconv.FormatFloat(s.Value, 'f', -1, 64) + s.Unit
}
var sassUnitConversions = map[string]map[string]float64{
"in": {
"in": 1,
"cm": 2.54,
"pc": 6,
"mm": 25.4,
"pt": 72,
"px": 96,
"deg": 1,
"grad": 1,
"rad": 1,
"turn": 1,
},
"cm": {
"in": 1.0 / 2.54,
"cm": 1,
"pc": 6.0 / 2.54,
"mm": 10,
"pt": 72.0 / 2.54,
"px": 96.0 / 2.54,
"deg": 1,
"grad": 1,
"rad": 1,
"turn": 1,
},
"pc": {
"in": 1.0 / 6.0,
"cm": 2.54 / 6.0,
"pc": 1,
"mm": 25.4 / 6.0,
"pt": 72.0 / 6.0,
"px": 96.0 / 6.0,
"deg": 1,
"grad": 1,
"rad": 1,
"turn": 1,
},
"mm": {
"in": 1.0 / 25.4,
"cm": 1.0 / 10.0,
"pc": 6.0 / 25.4,
"mm": 1,
"pt": 72.0 / 25.4,
"px": 96.0 / 25.4,
"deg": 1,
"grad": 1,
"rad": 1,
"turn": 1,
},
"pt": {
"in": 1.0 / 72.0,
"cm": 2.54 / 72.0,
"pc": 6.0 / 72.0,
"mm": 25.4 / 72.0,
"pt": 1,
"px": 96.0 / 72.0,
"deg": 1,
"grad": 1,
"rad": 1,
"turn": 1,
},
"px": {
"in": 1.0 / 96.0,
"cm": 2.54 / 96.0,
"pc": 6.0 / 96.0,
"mm": 25.4 / 96.0,
"pt": 72.0 / 96.0,
"px": 1,
"deg": 1,
"grad": 1,
"rad": 1,
"turn": 1,
},
"deg": {
"in": 1,
"cm": 1,
"pc": 1,
"mm": 1,
"pt": 1,
"px": 1,
"deg": 1,
"grad": 40.0 / 36.0,
"rad": math.Pi / 180.0,
"turn": 1.0 / 360.0,
},
"grad": {
"in": 1,
"cm": 1,
"pc": 1,
"mm": 1,
"pt": 1,
"px": 1,
"deg": 36.0 / 40.0,
"grad": 1,
"rad": math.Pi / 200.0,
"turn": 1.0 / 400.0,
},
"rad": {
"in": 1,
"cm": 1,
"pc": 1,
"mm": 1,
"pt": 1,
"px": 1,
"deg": 180.0 / math.Pi,
"grad": 200.0 / math.Pi,
"rad": 1,
"turn": math.Pi / 2.0,
},
"turn": {
"in": 1,
"cm": 1,
"pc": 1,
"mm": 1,
"pt": 1,
"px": 1,
"deg": 360.0,
"grad": 400.0,
"rad": 2.0 * math.Pi,
"turn": 1,
},
}
var SassUnitConversions map[string]map[string]float64 = sassUnitConversions
var sassUnitTypes = map[string]string{
"in": "distance",
"cm": "distance",
"pc": "distance",
"mm": "distance",
"pt": "distance",
"px": "distance",
"deg": "angle",
"grad": "angle",
"rad": "angle",
"turn": "angle",
}
// Add sums the two numbers in the first numbers units
func (sn SassNumber) Add(sn2 SassNumber) SassNumber {
sn1Value, sn2Value := getConvertedUnits(sn, sn2)
return SassNumber{Value: sn1Value + sn2Value, Unit: sn.Unit}
}
// Subtract minuses the two numbers in the first numbers units
func (sn SassNumber) Subtract(sn2 SassNumber) SassNumber {
sn1Value, sn2Value := getConvertedUnits(sn, sn2)
return SassNumber{Value: sn1Value - sn2Value, Unit: sn.Unit}
}
// Multiply takes the multiplication of the two numbers
// in the first numbers units
func (sn SassNumber) Multiply(sn2 SassNumber) SassNumber {
sn1Value, sn2Value := getConvertedUnits(sn, sn2)
return SassNumber{Value: sn1Value * sn2Value, Unit: sn.Unit}
}
// Divide takes the quotient of the two numbers in the first unit
func (sn SassNumber) Divide(sn2 SassNumber) SassNumber {
sn1Value, sn2Value := getConvertedUnits(sn, sn2)
return SassNumber{Value: sn1Value / sn2Value, Unit: sn.Unit}
}
func getConvertedUnits(sn1 SassNumber, sn2 SassNumber) (float64, float64) {
var sn2Value float64
if sn2.Unit != sn1.Unit {
sn2Value = convertUnits(sn2, sn1)
} else {
sn2Value = sn2.Value
}
return sn1.Value, sn2Value
}
func convertUnits(from SassNumber, to SassNumber) float64 {
return sassUnitConversions[from.Unit][to.Unit] * from.Value
}
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