// Symbol returns the character and its attributes by its coordinates
func Symbol(x, y int) (term.Cell, bool) {
if x >= 0 && x < canvas.width && y >= 0 && y < canvas.height {
cells := term.CellBuffer()
return cells[y*canvas.width+x], true
}
return term.Cell{Ch: ' '}, false
}
func (panel *Unbuffered) At(x, y int) termbox.Cell {
if !panel.contains(x, y) {
return termbox.Cell{}
}
width, _ := termbox.Size()
return termbox.CellBuffer()[(panel.r.Min.Y+y)*width+(panel.r.Min.X+x)]
}
// Returns buffered struct of the main screen.
// NOTE: Resize creates new buffer?
func MainScreen() *Buffered {
width, height := termbox.Size()
return &Buffered{
Unbuffered: Unbuffered{r: image.Rect(0, 0, width, height)},
buffer: termbox.CellBuffer(),
}
}
func (t *TermBox) GetCell(x, y int) *termbox.Cell {
w, h := termbox.Size()
idx := y*w + x
if idx > w*h {
return nil
}
return &termbox.CellBuffer()[idx]
}
func (tb termbox) Read(x, y int) (ch rune, fg, bg Color) {
cells := T.CellBuffer()
w, h := T.Size()
index := x + (y * w)
if index < 0 || index >= w*h {
return ' ', ColorBlack, ColorBlack
}
cell := cells[index]
return cell.Ch, termbox_to_color(cell.Fg), termbox_to_color(cell.Bg)
}
func (scr *Screen) Blit(x, y int) {
termWidth, _ := tb.Size()
startOffset := (y * termWidth) + x
cells := tb.CellBuffer()
for i := 0; i < scr.height; i++ {
tbRangeStart := startOffset + (i * termWidth)
tbRangeEnd := tbRangeStart + scr.width
scrRangeStart := i * scr.width
scrRangeEnd := scrRangeStart + scr.width
copy(cells[tbRangeStart:tbRangeEnd], scr.buffer[scrRangeStart:scrRangeEnd])
}
}
func calibratePoint(et gaze.EyeTracker, x, y float64) {
termbox.Clear(0, 0)
sizeX, sizeY := termbox.Size()
dx, dy := int(float64(sizeX)*x), int(float64(sizeY)*y)
termbox.CellBuffer()[sizeX*dy+dx] = termbox.Cell{'#', marker, termbox.ColorDefault}
termbox.Flush()
//log.Printf("Termbox Size: (%d, %d)", sizeX, sizeY)
log.Printf("Calibrating (%.3f, %.3f)", x, y)
done := make(chan struct{})
time.Sleep(1 * time.Second) //Minimum time. Gives user time to react.
et.AddPointToCalibration(gaze.NewPoint2D(x, y), func(err error) {
close(done) //Synchronizing async call.
})
<-done
}
func drawPoint(point gaze.Point2D, attributes termbox.Attribute) {
sizeX, sizeY := termbox.Size()
x, y := int(float64(sizeX)*point.X()), int(float64(sizeY)*point.Y())
switch {
case x < 0:
x = 0
case x >= sizeX:
x = sizeX - 1
}
switch {
case y < 0:
y = 0
case y >= sizeY:
y = sizeY - 1
}
termbox.CellBuffer()[sizeX*y+x] = termbox.Cell{'O', attributes, termbox.ColorWhite}
}