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pixel-distance.go
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pixel-distance.go
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// Copyright (C) 2021 David Vogel
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"fmt"
"log"
"strconv"
"strings"
)
// PixelDistance describes a length or absolute position in pixels.
type PixelDistance float64
func (p PixelDistance) Pixels() float64 {
return float64(p)
}
// TweakableValue returns the values mapped into optimizer space.
func (p PixelDistance) TweakableValue() float64 {
return float64(p)
}
// SetTweakableValue converts and applies the given value from optimizer space.
func (p *PixelDistance) SetTweakableValue(v float64) {
*p = PixelDistance(v)
}
func (p PixelDistance) Sqr() float64 {
return float64(p * p)
}
// InputValue implements the valuer interface of the general input component.
func (p PixelDistance) InputValue() string {
return fmt.Sprintf("%.13g", p)
}
// SetInputValue implements the valuer interface of the general input component.
func (p *PixelDistance) SetInputValue(strVal string) {
strVal = strings.ReplaceAll(strVal, ",", ".")
val, err := strconv.ParseFloat(strVal, 64)
if err != nil {
log.Printf("strconv.ParseFloat() failed: %v", err)
return
}
*p = PixelDistance(val)
}