70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
package drawer
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import "math"
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func (d *drawer) FillBar(sx, sy, ex, ey, color int) {
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d.Lock()
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defer d.Unlock()
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bounds := d.img.Bounds()
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// Crop
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sx = int(math.Max(float64(sx), 0))
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sy = int(math.Max(float64(sy), 0))
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ex = int(math.Min(float64(ex), float64(bounds.Dx())))
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ey = int(math.Min(float64(ey), float64(bounds.Dy())))
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w := ex - sx
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// Fill
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for lineaddr := sy*bounds.Dx() + sx; lineaddr < (ey-1)*bounds.Dx()+ex; lineaddr += bounds.Dx() {
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addr := lineaddr
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le := addr + w
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for ; addr < le; addr++ {
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d.img.Pix[addr] = 255
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}
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}
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}
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func (d *drawer) PutBar(sx, sy, ex, ey, color int) {
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d.Lock()
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defer d.Unlock()
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bounds := d.img.Bounds()
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// Crop
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// Top
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if sy >= 0 && sy < bounds.Dy() {
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x0 := int(math.Max(float64(sx), 0))
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x1 := int(math.Min(float64(ex), float64(bounds.Dx())))
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for addr := sy*bounds.Dx() + x0; addr < sy*bounds.Dx()+x1; addr++ {
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d.img.Pix[addr] = 255
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}
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}
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// Bottom
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if ey >= 0 && ey <= bounds.Dy() {
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x0 := int(math.Max(float64(sx), 0))
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x1 := int(math.Min(float64(ex), float64(bounds.Dx())))
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for addr := (ey-1)*bounds.Dx() + x0; addr < (ey-1)*bounds.Dx()+x1; addr++ {
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d.img.Pix[addr] = 255
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}
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}
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// Left
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if sx >= 0 && sx < bounds.Dx() {
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y0 := int(math.Max(float64(sy), 0))
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y1 := int(math.Min(float64(ey), float64(bounds.Dy())))
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for addr := y0*bounds.Dx() + sx; addr < y1*bounds.Dx()+sx; addr += bounds.Dx() {
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d.img.Pix[addr] = 255
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}
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}
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// Right
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if ex >= 0 && ex <= bounds.Dx() {
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y0 := int(math.Max(float64(sy), 0))
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y1 := int(math.Min(float64(ey), float64(bounds.Dy())))
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for addr := y0*bounds.Dx() + (ex - 1); addr < y1*bounds.Dx()+(ex-1); addr += bounds.Dx() {
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d.img.Pix[addr] = 255
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}
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}
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}
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