package graphics import ( "github.com/hajimehoshi/go-ebiten/graphics/matrix" ) type Context interface { Clear() Fill(r, g, b uint8) // TODO: Refacotring DrawTexture(id TextureId, geometryMatrix matrix.Geometry, colorMatrix matrix.Color) DrawRenderTarget(id RenderTargetId, geometryMatrix matrix.Geometry, colorMatrix matrix.Color) DrawTextureParts(id TextureId, parts []TexturePart, geometryMatrix matrix.Geometry, colorMatrix matrix.Color) DrawRenderTargetParts(id RenderTargetId, parts []TexturePart, geometryMatrix matrix.Geometry, colorMatrix matrix.Color) ResetOffscreen() SetOffscreen(id RenderTargetId) // TODO: glTextureSubImage2D } type LazyContext struct { funcs []func(Context) } func NewLazyContext() *LazyContext { return &LazyContext{ funcs: []func(Context){}, } } func (c *LazyContext) Flush(actual Context) { for _, f := range c.funcs { f(actual) } c.funcs = []func(Context){} } func (c *LazyContext) Clear() { c.funcs = append(c.funcs, func(actual Context) { actual.Clear() }) } func (c *LazyContext) Fill(r, g, b uint8) { c.funcs = append(c.funcs, func(actual Context) { actual.Fill(r, g, b) }) } func (c *LazyContext) DrawTexture(id TextureId, geometryMatrix matrix.Geometry, colorMatrix matrix.Color) { c.funcs = append(c.funcs, func(actual Context) { actual.DrawTexture(id, geometryMatrix, colorMatrix) }) } func (c *LazyContext) DrawRenderTarget(id RenderTargetId, geometryMatrix matrix.Geometry, colorMatrix matrix.Color) { c.funcs = append(c.funcs, func(actual Context) { actual.DrawRenderTarget(id, geometryMatrix, colorMatrix) }) } func (c *LazyContext) DrawTextureParts(id TextureId, parts []TexturePart, geometryMatrix matrix.Geometry, colorMatrix matrix.Color) { parts2 := make([]TexturePart, len(parts)) copy(parts2, parts) c.funcs = append(c.funcs, func(actual Context) { actual.DrawTextureParts(id, parts2, geometryMatrix, colorMatrix) }) } func (c *LazyContext) DrawRenderTargetParts(id RenderTargetId, parts []TexturePart, geometryMatrix matrix.Geometry, colorMatrix matrix.Color) { parts2 := make([]TexturePart, len(parts)) copy(parts2, parts) c.funcs = append(c.funcs, func(actual Context) { actual.DrawRenderTargetParts(id, parts2, geometryMatrix, colorMatrix) }) } func (c *LazyContext) ResetOffscreen() { c.funcs = append(c.funcs, func(actual Context) { actual.ResetOffscreen() }) } func (c *LazyContext) SetOffscreen(id RenderTargetId) { c.funcs = append(c.funcs, func(actual Context) { actual.SetOffscreen(id) }) }