func main() {
var Centres float64 // Distance between Centres
var Ratio float64 // Required Ratio
var DriveTeeth int // Number of teeth on drive gear
var DrivenTeeth int // Number of teeth on drive gear
var PressureAngle float64
var Backlash float64
var Rotation int // Percent of rotation
var FileName string // File name for output.
var pCentres = flag.Int("c", 100, "Distance between centres. (Whole mm only)")
var pDriveTeeth = flag.Int("n1", 7, "Number of teeth on the first gear")
var pDrivenTeeth = flag.Int("n2", 23, "Number of teeth on the second gear")
var pPressureAngle = flag.Int("p", 25, "Pressure angle")
var pBacklash = flag.String("b", "0.5", "Backlash angle (degrees)")
var pFileName = flag.String("o", "", "Output file name, .svg will be appended. stdout if not given")
var pRotation = flag.Int("r", 0, "Rotation as percentage of one tooth")
flag.Parse()
Centres = float64(*pCentres)
DriveTeeth = *pDriveTeeth
DrivenTeeth = *pDrivenTeeth
PressureAngle = float64(*pPressureAngle)
var err error
Backlash, err = strconv.ParseFloat(*pBacklash, 64)
if err != nil {
Backlash = 0.0
}
Rotation = *pRotation
FileName = *pFileName
Ratio = float64(DrivenTeeth) / float64(DriveTeeth)
var Gear1 gear.Gear
Gear1.Pd = (1 / (Ratio + 1)) * Centres * 2
Gear1.N = DriveTeeth
Gear1.A = PressureAngle
Gear1.B = Backlash
var Gear2 gear.Gear
Gear2.Pd = (Ratio / (Ratio + 1)) * Centres * 2
Gear2.N = DrivenTeeth
Gear2.A = PressureAngle
Gear2.B = Backlash
plot.Plot(Gear1, Gear2, Rotation, FileName)
}
