// generateBackground creates a background of green tiles - might not be the most efficient way to do this
func generateBackground() *engi.Entity {
rect := image.Rect(0, 0, int(worldWidth), int(worldHeight))
img := image.NewNRGBA(rect)
c1 := color.RGBA{102, 153, 0, 255}
c2 := color.RGBA{102, 173, 0, 255}
for i := rect.Min.X; i < rect.Max.X; i++ {
for j := rect.Min.Y; j < rect.Max.Y; j++ {
if i%40 > 20 {
if j%40 > 20 {
img.Set(i, j, c1)
} else {
img.Set(i, j, c2)
}
} else {
if j%40 > 20 {
img.Set(i, j, c2)
} else {
img.Set(i, j, c1)
}
}
}
}
bgTexture := engi.NewImageObject(img)
field := engi.NewEntity([]string{"RenderSystem"})
fieldRender := engi.NewRenderComponent(engi.NewRegion(engi.NewTexture(bgTexture), 0, 0, int(worldWidth), int(worldHeight)), engi.Point{1, 1}, "Background1")
fieldRender.SetPriority(engi.Background)
fieldSpace := &engi.SpaceComponent{engi.Point{0, 0}, worldWidth, worldHeight}
field.AddComponent(fieldRender)
field.AddComponent(fieldSpace)
return field
}
func (c *Calibrate) Update(entity *ecs.Entity, dt float32) {
if c.frameIndex != 0 {
return
}
var (
cal *CalibrateComponent
ok bool
)
if cal, ok = entity.ComponentFast(cal).(*CalibrateComponent); !ok {
return
}
// Render the image again
plt, err := plot.New()
if err != nil {
log.Fatal(err)
}
plotutil.AddLinePoints(plt,
"CH"+strconv.Itoa(int(cal.ChannelIndex)), plotter.XYer(c.channels[cal.ChannelIndex]))
img := image.NewRGBA(image.Rect(0, 0, 3*dpi, 3*dpi))
canv := vgimg.NewWith(vgimg.UseImage(img))
plt.Draw(draw.New(canv))
bgTexture := engi.NewImageRGBA(img)
// Give it to engi
erender := &engi.RenderComponent{
Display: engi.NewRegion(engi.NewTexture(bgTexture), 0, 0, 3*dpi, 3*dpi),
Scale: engi.Point{1, 1},
Transparency: 1,
Color: color.RGBA{255, 255, 255, 255},
}
erender.SetPriority(engi.HUDGround)
entity.AddComponent(erender)
}
// GenerateSquareComonent creates a square, alternating two colors, with given size and priority levl
func GenerateSquareComonent(c1, c2 color.NRGBA, w, h float32, priority engi.PriorityLevel) *engi.RenderComponent {
rect := image.Rect(0, 0, int(w), int(h))
img := image.NewNRGBA(rect)
if c1 == c2 {
// Solid color
for i := 0; i < len(img.Pix); i += 4 {
img.Pix[i] = c1.R
img.Pix[i+1] = c1.G
img.Pix[i+2] = c1.B
img.Pix[i+3] = c1.A
}
} else {
// TODO: we can optimize this as well
for i := rect.Min.X; i < rect.Max.X; i++ {
for j := rect.Min.Y; j < rect.Max.Y; j++ {
if i%40 > 20 {
if j%40 > 20 {
img.Set(i, j, c1)
} else {
img.Set(i, j, c2)
}
} else {
if j%40 > 20 {
img.Set(i, j, c2)
} else {
img.Set(i, j, c1)
}
}
}
}
}
bgTexture := engi.NewImageObject(img)
fieldRender := engi.NewRenderComponent(engi.NewRegion(engi.NewTexture(bgTexture), 0, 0, int(w), int(h)), engi.Point{1, 1}, "")
fieldRender.SetPriority(priority)
return fieldRender
}