98 lines
3.4 KiB
Go
98 lines
3.4 KiB
Go
package bloob
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import "math"
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func (image *Image) DrawText(str string, font *Font, pos Vec2i, color Color) {
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origX := pos.X
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for _, ch := range str {
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c := font.chars[ch]
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if ch == 10 {
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pos.X = origX
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pos.Y += font.lineHeight
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continue
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}
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image.DrawColor(c.image, pos, color)
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pos.X += c.xForward
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}
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}
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func (image *Image) DrawTextCenter(str string, font *Font, rect Recti, color Color) {
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size := font.StringBounds(str)
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pos := Add(DivScalar(Sub(rect.Size, size), 2), Add(rect.Pos, Vec2i{X: 0, Y: 1}))
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image.DrawText(str, font, pos, color)
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}
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func (image *Image) DrawTextSin(str string, font *Font, pos Vec2i, color Color, freq, amplitude, phase float64) {
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origX := pos.X
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for _, ch := range str {
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c := font.chars[ch]
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if ch == 10 {
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pos.X = origX
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pos.Y += font.lineHeight
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continue
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}
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image.DrawColor(c.image, Vec2i{X: pos.X, Y: int(math.Sin(float64(pos.X)*math.Pi/4/freq+phase*math.Pi*2)*amplitude) + pos.Y}, color)
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pos.X += c.xForward
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}
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}
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func (image *Image) DrawTextOutline(str string, font *Font, pos Vec2i, color, outlineColor Color) {
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origX := pos.X
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for _, ch := range str {
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c := font.chars[ch]
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if ch == 10 {
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pos.X = origX
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pos.Y += font.lineHeight
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continue
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}
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x := pos.X
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y := pos.Y
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image.DrawColor(c.image, Vec2i{X: x - 1, Y: y}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x + 1, Y: y}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x, Y: y - 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x, Y: y + 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x - 1, Y: y - 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x + 1, Y: y + 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x + 1, Y: y - 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x - 1, Y: y + 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x, Y: y + 2}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x - 1, Y: y + 2}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x + 1, Y: y + 2}, outlineColor)
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image.DrawColor(c.image, pos, color)
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pos.X += c.xForward
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}
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}
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func (image *Image) DrawTextOutlineCenter(str string, font *Font, rect Recti, color, outlineColor Color) {
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size := font.StringBounds(str)
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pos := Add(DivScalar(Sub(rect.Size, size), 2), Add(rect.Pos, Vec2i{X: 0, Y: 1}))
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image.DrawTextOutline(str, font, pos, color, outlineColor)
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}
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func (image *Image) DrawTextOutlineSin(str string, font *Font, pos Vec2i, color, outlineColor Color, freq, amplitude, phase float64) {
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origX := pos.X
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for _, ch := range str {
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c := font.chars[ch]
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if ch == 10 {
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pos.X = origX
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pos.Y += font.lineHeight
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continue
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}
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x := pos.X
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y := int(math.Sin(float64(pos.X)*math.Pi/4/freq+phase*math.Pi*2)*amplitude) + pos.Y
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image.DrawColor(c.image, Vec2i{X: x - 1, Y: y}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x + 1, Y: y}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x, Y: y - 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x, Y: y + 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x - 1, Y: y - 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x + 1, Y: y + 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x + 1, Y: y - 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x - 1, Y: y + 1}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x, Y: y + 2}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x - 1, Y: y + 2}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x + 1, Y: y + 2}, outlineColor)
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image.DrawColor(c.image, Vec2i{X: x, Y: y}, color)
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pos.X += c.xForward
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}
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}
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