110 lines
3.1 KiB
Go
Executable File
110 lines
3.1 KiB
Go
Executable File
package main
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import (
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"log"
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"time"
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"fmt"
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"github.com/Hundemeier/go-sacn/sacn"
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)
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func slice_rearrange(rowwidth int, rows int, alternaterows bool, inslice []byte) [][]byte {
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if alternaterows {
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panic("Alternating rows not yet implemented")
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}
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currentUniverse := 0
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currentUniversePosition := 0
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universes := make([][]byte, (len(inslice)/510)+1)
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currentUniverseSlice := make([]byte, 511)
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currentRowReverse := false;
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for i := range(inslice) {
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fmt.Println(i)
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if currentUniversePosition >= 510 {
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fmt.Println("Reached end of universe!")
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universes[currentUniverse] = currentUniverseSlice
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if (!currentRowReverse) {
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currentRowReverse = true
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} else {
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currentRowReverse = false
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}
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currentUniverse += 1
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currentUniversePosition = 0
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currentUniverseSlice = make([]byte, 511)
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}
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currentUniverseSlice[currentUniversePosition] = inslice[i]
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currentUniversePosition += 1
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}
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universes[currentUniverse] = currentUniverseSlice
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return universes
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}
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// gradient returns from fromX to toX fading from (fromR,fromG,fromB) to (toR,toG,toB)
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// at least that's the idea.
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func gradient(fromR byte, fromG byte, fromB byte, toR byte, toG byte, toB byte, fromX int, toX int) []byte {
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ret := make([]byte, toX*3);
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var stepR float32 = (float32(toR) - float32(fromR)) / (float32(toX) - float32(fromX))
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var stepG float32 = (float32(toG) - float32(fromG)) / (float32(toX) - float32(fromX))
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var stepB float32 = (float32(toB) - float32(fromB)) / (float32(toX) - float32(fromX))
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for i := fromX; i < toX*3; i+=3 {
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ret[i] = fromR+byte(float32(i/3)*stepR)
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ret[i+1] = fromG+byte(float32(i/3)*stepG)
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ret[i+2] = fromB+byte(float32(i/3)*stepB)
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}
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return ret
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}
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func slice512(s []byte) [512]byte {
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var ret [512]byte
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for i := range(s) {
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if i < 512 {
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ret[i] = s[i]
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}
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}
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return ret
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}
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func sliceUnlenthed(s [512]byte) []byte {
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ret := make([]byte, 512);
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for i := range(s) {
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ret[i] = s[i]
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}
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return ret
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}
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func main() {
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//instead of "" you could provide an ip-address that the socket should bind to
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trans, err := sacn.NewTransmitter("", [16]byte{1, 2, 3}, "test")
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if err != nil {
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log.Fatal(err)
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}
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//activates the first universe
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ch1, err := trans.Activate(1)
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if err != nil {
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log.Fatal(err)
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}
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ch2, err := trans.Activate(2)
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if err != nil {
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log.Fatal(err)
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}
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//deactivate the channel on exit
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defer close(ch1)
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defer close(ch2)
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//set a unicast destination, and/or use multicast
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trans.SetMulticast(1, false)//this specific setup will not multicast on windows,
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//because no bind address was provided
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//set some example ip-addresses
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trans.SetDestinations(1, []string{"192.168.1.139"})
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trans.SetMulticast(2, false)//this specific setup will not multicast on windows,
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trans.SetDestinations(2, []string{"192.168.1.139"})
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//send some random data for 10 seconds
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for i := 0; i < 20; i++ {
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channels := slice_rearrange(68,4,false,gradient(0,0,255,255,0,0,0,272))
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ch1 <- slice512(channels[0])
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ch2 <- slice512(channels[1])
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time.Sleep(500 * time.Millisecond)
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}
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} |