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Using pixelutils packer to handle images
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Allen Ray
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Jul 30, 2020
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| package pixelui | ||
|
|
||
| import ( | ||
| "github.com/faiface/pixel" | ||
| "github.com/inkyblackness/imgui-go" | ||
| ) | ||
|
|
||
| // imguiRectToPixelRect Converts the imgui rect to a Pixel rect | ||
| func imguiRectToPixelRect(r imgui.Vec4) pixel.Rect { | ||
| return pixel.R(float64(r.X), float64(r.Y), float64(r.Z), float64(r.W)) | ||
| } | ||
|
|
||
| // IVec converts a pixel vector to an imgui vector | ||
| func IVec(v pixel.Vec) imgui.Vec2 { | ||
| return imgui.Vec2{X: float32(v.X), Y: float32(v.Y)} | ||
| } | ||
|
|
||
| // IV creates an imgui vector from the given points. | ||
| func IV(x, y float64) imgui.Vec2 { | ||
| return imgui.Vec2{X: float32(x), Y: float32(y)} | ||
| } | ||
|
|
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| // PV converts an imgui vector to a pixel vector | ||
| func PV(v imgui.Vec2) pixel.Vec { | ||
| return pixel.V(float64(v.X), float64(v.Y)) | ||
| } | ||
|
|
||
| // ProjectVec projects the vector by the UI's matrix (vertical flip) | ||
| // and returns that as a imgui vector | ||
| func ProjectVec(v pixel.Vec) imgui.Vec2 { | ||
| return IVec(currentUI.matrix.Project(v)) | ||
| } | ||
|
|
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| // ProjectV creates a pixel vector and projects it using ProjectVec | ||
| func ProjectV(x, y float64) imgui.Vec2 { | ||
| return ProjectVec(pixel.V(x, y)) | ||
| } | ||
|
|
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| // UnprojectV unprojects the vector by the UI's matrix (vertical flip) | ||
| // and returns that as a pixel vector | ||
| func UnprojectV(v imgui.Vec2) pixel.Vec { | ||
| return currentUI.matrix.Unproject(PV(v)) | ||
| } | ||
|
|
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| // IZV returns an imgui zero vector | ||
| func IZV() imgui.Vec2 { | ||
| return imgui.Vec2{X: 0, Y: 0} | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| package pixelui | ||
|
|
||
| import ( | ||
| "unsafe" | ||
|
|
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| "github.com/dusk125/pixelutils/packer" | ||
| "github.com/inkyblackness/imgui-go" | ||
|
|
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| "github.com/faiface/pixel" | ||
| ) | ||
|
|
||
| const ( | ||
| WrappedNone = iota | ||
| WrappedSprite | ||
| WrappedBatch | ||
| WrappedCanvas | ||
| ) | ||
|
|
||
| type wrapper struct { | ||
| Type int | ||
| Value interface{} | ||
| } | ||
|
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| func Sprite(sprite *pixel.Sprite) imgui.TextureID { | ||
| return imgui.TextureID(unsafe.Pointer(&wrapper{ | ||
| Type: WrappedSprite, | ||
| Value: sprite, | ||
| })) | ||
| } | ||
|
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| func (ui *UI) AddSprite(sprite *pixel.Sprite) imgui.TextureID { | ||
| id, _ := ui.packer.InsertV(sprite, packer.InsertFlipped) | ||
| return imgui.TextureID(id) | ||
| } |
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