51 lines
1 KiB
Go
51 lines
1 KiB
Go
|
package pixclient
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net"
|
||
|
|
"strconv"
|
||
|
|
)
|
||
|
|
|
||
|
|
type Client struct {
|
||
|
|
connection net.Conn
|
||
|
|
}
|
||
|
|
|
||
|
|
func Init(addr net.IP, port int) *Client {
|
||
|
|
var client Client
|
||
|
|
connection, err := net.Dial("tcp", addr.String()+":"+strconv.Itoa(port))
|
||
|
|
client.connection = connection
|
||
|
|
check(err)
|
||
|
|
return &client
|
||
|
|
}
|
||
|
|
|
||
|
|
func (Client *Client) WritePixel(x, y int, r, g, b, a byte) {
|
||
|
|
var bytes []byte
|
||
|
|
bytes = append(appendTwoDigitHex(appendTwoDigitHex(appendTwoDigitHex(appendTwoDigitHex(append(append(append(append(append(
|
||
|
|
bytes, []byte("PX ")...),
|
||
|
|
[]byte(strconv.FormatInt(int64(x), 10))...),
|
||
|
|
[]byte(" ")...),
|
||
|
|
[]byte(strconv.FormatInt(int64(y), 10))...),
|
||
|
|
[]byte(" ")...),
|
||
|
|
r),
|
||
|
|
g),
|
||
|
|
b),
|
||
|
|
a),
|
||
|
|
[]byte("\n")...)
|
||
|
|
Client.connection.Write(bytes)
|
||
|
|
|
||
|
|
//
|
||
|
|
//Client.connection.Write([]byte(
|
||
|
|
// fmt.Sprintf("PX %d %d %X\n", x, y, []byte{r, g, b, a})))
|
||
|
|
}
|
||
|
|
func appendTwoDigitHex(bytes []byte, val byte) []byte {
|
||
|
|
if val < 0x10 {
|
||
|
|
bytes = append(bytes, []byte("0")...)
|
||
|
|
}
|
||
|
|
return strconv.AppendInt(bytes, int64(val), 16)
|
||
|
|
}
|
||
|
|
|
||
|
|
func check(e error) {
|
||
|
|
if e != nil {
|
||
|
|
panic(e)
|
||
|
|
}
|
||
|
|
}
|