// Draw the square.
// Remember that the square should be ordered previously to make sure it
// prints in the intended order. Take a look at
// `github.com/Willyfrog/peano/matrix.Strategy` Interface
func (sq *Square) Draw(canvas *drawing.Canvas) {
path := canvas.GetContext()
if log.StandardLogger().Level == log.DebugLevel {
if sq.X == 0 && sq.Y == 0 {
path.SetStrokeColor(color.RGBA{0x44, 0xff, 0x44, 0xff})
} else if sq.X == 0 && sq.Y == 1 {
path.SetStrokeColor(color.RGBA{0xff, 0x44, 0x44, 0xff})
} else {
path.SetStrokeColor(color.RGBA{0xcc, 0xcc, 0xcc, 0xff})
}
} else {
path.SetStrokeColor(color.RGBA{0xcc, 0xcc, 0xcc, 0xff})
}
path.SetLineWidth(1)
xo, yo := sq.Origin()
xe, ye := sq.End()
drawing.DrawSquare(xo, yo, xe, ye, path)
path.Stroke()
//path.FillStroke()
//log.Debug(fmt.Sprintf("Result: %v", sq.Points))
var origin *point.Point
for _, pt := range sq.Points {
pt.Draw(canvas)
if origin != nil {
linepath := canvas.GetContext()
path.SetStrokeColor(color.RGBA{0x44, 0x44, 0x88, 0xff})
path.SetLineWidth(5)
drawing.DrawLine(origin.X, origin.Y, pt.X, pt.Y, linepath)
linepath.Stroke()
}
origin = pt
}
}
// Draw the matrix into the canvas using the `strat` Strategy
func (m *Matrix) Draw(canvas *drawing.Canvas, strat Strategy) {
path := canvas.GetContext()
path.SetFillColor(color.RGBA{0xaa, 0xaa, 0xaa, 0xff})
path.SetStrokeColor(color.RGBA{0x99, 0x99, 0x99, 0xff})
path.SetLineWidth(2)
drawing.DrawSquare(0.0, 0.0, 1.0, 1.0, path)
log.Info("filling the background of the image, this might take some seconds")
path.FillStroke()
m.drawSquares(canvas, strat)
}
func (m *Matrix) drawSquares(canvas *drawing.Canvas, strat Strategy) {
finished := make(chan position)
numSquares := len(m.Squares) * len(m.Squares)
sentSquares := 0
for i, row := range m.Squares {
for j := range row {
go fillSquare(m.Squares[i][j], finished, strat)
sentSquares++
log.Debug(fmt.Sprintf("Sent [%d, %d] %d/%d", i, j, sentSquares, numSquares))
}
}
log.Debug("Waiting for squares to be filled.")
wait := make(chan bool)
go drawEach(finished, wait, numSquares, *m, canvas)
_ = <-wait //synchronize
path := canvas.GetContext()
//path.SetFillColor(color.RGBA{0xaa, 0xaa, 0xaa, 0xff})
path.SetStrokeColor(color.RGBA{0x44, 0x44, 0x44, 0xff})
path.SetLineWidth(5)
drawing.DrawSquare(0.0, 0.0, 1.0, 1.0, path)
//path.FillStroke()
log.Debug("About to draw line connections")
for i, line := range strat.ConnectSquares(*m) {
//log.Debug(fmt.Sprintf("Drawing the %dth line: %v", i, line))
if len(line) == 2 {
p1 := line[0]
p2 := line[1]
path2 := canvas.GetContext()
//path2.SetFillColor(color.RGBA{0xaa, 0xaa, 0xaa, 0xff})
path2.SetStrokeColor(color.RGBA{0x44, 0x44, 0x44, 0xff})
path2.SetLineWidth(1)
drawing.DrawLine(p1.X, p1.Y, p2.X, p2.Y, path2)
path2.FillStroke()
} else {
log.Error(fmt.Sprintf("Line %d didn't contain 2 points", i)) // shouldn't happen :/
}
}
}