Delete batch.go

batch.go

@@ -1,163 +0,0 @@
-package pixel
-
-import (
-	"fmt"
-	"image/color"
-)
-
-// Batch is a Target that allows for efficient drawing of many objects with the same Picture.
-//
-// To put an object into a Batch, just draw it onto it:
-//   object.Draw(batch)
-type Batch struct {
-	cont Drawer
-
-	mat Matrix
-	col RGBA
-}
-
-var _ BasicTarget = (*Batch)(nil)
-
-// NewBatch creates an empty Batch with the specified Picture and container.
-//
-// The container is where objects get accumulated. Batch will support precisely those Triangles
-// properties, that the supplied container supports. If you retain access to the container and
-// change it, call Dirty to notify Batch about the change.
-//
-// Note, that if the container does not support TrianglesColor, color masking will not work.
-func NewBatch(container Triangles, pic Picture) *Batch {
-	b := &Batch{cont: Drawer{Triangles: container, Picture: pic, Cached: true}}
-	b.SetMatrix(IM)
-	b.SetColorMask(Alpha(1))
-	return b
-}
-
-// Dirty notifies Batch about an external modification of it's container. If you retain access to
-// the Batch's container and change it, call Dirty to notify Batch about the change.
-//
-//   container := &pixel.TrianglesData{}
-//   batch := pixel.NewBatch(container, nil)
-//   container.SetLen(10) // container changed from outside of Batch
-//   batch.Dirty()        // notify Batch about the change
-func (b *Batch) Dirty() {
-	b.cont.Dirty()
-}
-
-// Clear removes all objects from the Batch.
-func (b *Batch) Clear() {
-	b.cont.Triangles.SetLen(0)
-	b.cont.Dirty()
-}
-
-// Draw draws all objects that are currently in the Batch onto another Target.
-func (b *Batch) Draw(t Target) {
-	b.cont.Draw(t)
-}
-
-// SetMatrix sets a Matrix that every point will be projected by.
-func (b *Batch) SetMatrix(m Matrix) {
-	b.mat = m
-}
-
-// SetColorMask sets a mask color used in the following draws onto the Batch.
-func (b *Batch) SetColorMask(c color.Color) {
-	if c == nil {
-		b.col = Alpha(1)
-		return
-	}
-	b.col = ToRGBA(c)
-}
-
-// MakeTriangles returns a specialized copy of the provided Triangles that draws onto this Batch.
-func (b *Batch) MakeTriangles(t Triangles) TargetTriangles {
-	bt := &batchTriangles{
-		tri: t.Copy(),
-		tmp: MakeTrianglesData(t.Len()),
-		dst: b,
-	}
-	return bt
-}
-
-// MakePicture returns a specialized copy of the provided Picture that draws onto this Batch.
-func (b *Batch) MakePicture(p Picture) TargetPicture {
-	if p != b.cont.Picture {
-		panic(fmt.Errorf("(%T).MakePicture: Picture is not the Batch's Picture", b))
-	}
-	bp := &batchPicture{
-		pic: p,
-		dst: b,
-	}
-	return bp
-}
-
-type batchTriangles struct {
-	tri Triangles
-	tmp *TrianglesData
-	dst *Batch
-}
-
-func (bt *batchTriangles) Len() int {
-	return bt.tri.Len()
-}
-
-func (bt *batchTriangles) SetLen(len int) {
-	bt.tri.SetLen(len)
-	bt.tmp.SetLen(len)
-}
-
-func (bt *batchTriangles) Slice(i, j int) Triangles {
-	return &batchTriangles{
-		tri: bt.tri.Slice(i, j),
-		tmp: bt.tmp.Slice(i, j).(*TrianglesData),
-		dst: bt.dst,
-	}
-}
-
-func (bt *batchTriangles) Update(t Triangles) {
-	bt.tri.Update(t)
-}
-
-func (bt *batchTriangles) Copy() Triangles {
-	return &batchTriangles{
-		tri: bt.tri.Copy(),
-		tmp: bt.tmp.Copy().(*TrianglesData),
-		dst: bt.dst,
-	}
-}
-
-func (bt *batchTriangles) draw(bp *batchPicture) {
-	bt.tmp.Update(bt.tri)
-
-	for i := range *bt.tmp {
-		(*bt.tmp)[i].Position = bt.dst.mat.Project((*bt.tmp)[i].Position)
-		(*bt.tmp)[i].Color = bt.dst.col.Mul((*bt.tmp)[i].Color)
-	}
-
-	cont := bt.dst.cont.Triangles
-	cont.SetLen(cont.Len() + bt.tri.Len())
-	added := cont.Slice(cont.Len()-bt.tri.Len(), cont.Len())
-	added.Update(bt.tri)
-	added.Update(bt.tmp)
-	bt.dst.cont.Dirty()
-}
-
-func (bt *batchTriangles) Draw() {
-	bt.draw(nil)
-}
-
-type batchPicture struct {
-	pic Picture
-	dst *Batch
-}
-
-func (bp *batchPicture) Bounds() Rect {
-	return bp.pic.Bounds()
-}
-
-func (bp *batchPicture) Draw(t TargetTriangles) {
-	bt := t.(*batchTriangles)
-	if bp.dst != bt.dst {
-		panic(fmt.Errorf("(%T).Draw: TargetTriangles generated by different Batch", bp))
-	}
-	bt.draw(bp)
-}