Пример #1
0
// Draw the "fall" view onto the given PixMap.
func Draw(pm nimble.PixMap, invaders []Invader) {
	if pm.Width() != background.Width() || pm.Height() != background.Height() {
		panic("fall.Draw: pm and background differ in size")
	}

	drawDot := false
	time := nimble.Now()
	if time-lastDotTime >= dotTimeInterval {
		lastDotTime = time
		drawDot = true
	}

	pm.Copy(0, 0, &background)
	xScale := float32(pm.Width() - tickHalfWidth)   // Avoid clipping tic on right side
	yScale := float32(pm.Height() - tickHalfHeight) // Avoid clippling tic on bottom
	xOffset := float32(0)
	yOffset := float32(0)
	for _, inv := range invaders {
		x := int32(inv.Amplitude*xScale + xOffset)
		y := int32(inv.Progress*yScale + yOffset)
		r := nimble.Rect{
			Left:   x - tickHalfWidth,
			Top:    y - tickHalfHeight,
			Right:  x + tickHalfWidth,
			Bottom: y + tickHalfHeight,
		}
		pm.DrawRect(r, inv.Color)
		background.DrawRect(r, nimble.Black)
		if drawDot {
			if doty := r.Top - 1; background.Contains(x, doty) {
				background.SetPixel(x, doty, inv.Color)
			}
		}
	}
}
Пример #2
0
// Generic version of Draw
func Draw(pm nimble.PixMap, harmonics []Harmonic, cm colorMap) {
	setColoring(cm)
	n := len(harmonics)
	w := make([]complex64, n)
	u := make([]complex64, n)
	v := make([]complex64, n)
	z := make([]complex64, n)
	for i, h := range harmonics {
		w[i] = complex(h.Amplitude*clutRadius, 0) * euler(h.Phase)
		u[i] = euler(h.Ωx)
		v[i] = euler(h.Ωy)
	}
	for y := int32(0); y < pm.Height(); y++ {
		for i := 0; i < n; i++ {
			z[i] = w[i]
			w[i] *= v[i] // Rotate w by v
		}
		row := pm.Row(y)
		for x := range row {
			const offset float32 = clutCenter + 0.5
			s := complex(offset, offset)
			for i := 0; i < n; i++ {
				s += z[i]
				z[i] *= u[i]
			}
			row[x] = clut[int(imag(s))][int(real(s))]
		}
	}
}
Пример #3
0
// Draw draws the score (as binary lights) on the given PixMap.
func Draw(pm nimble.PixMap, scoreValue int) {
	if pm.Height() != lightHeight {
		panic(fmt.Sprintf("score.Draw: pm.Height()=%v lightHeight=%v\n", pm.Height(), lightHeight))
	}
	for k := range lightColor {
		s := state(scoreValue >> uint(nLight-k-1) & 1)
		src := nimble.MakePixMap(lightWidth, lightHeight, getLight(k, s), lightWidth)
		pm.Copy(lightWidth*int32(k), 0, &src)
	}
}