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internal/ops: switch quad encoding to compute format

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Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2021-03-11 10:41:47 +01:00
parent 9366fce0f3
commit 07572387e3
3 changed files with 24 additions and 25 deletions
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internal/ops/ops.go
+7 -20
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@@ -5,12 +5,15 @@ package ops
import (
"encoding/binary"
"math"
"unsafe"
"gioui.org/f32"
"gioui.org/internal/byteslice"
"gioui.org/internal/opconst"
"gioui.org/internal/scene"
)
const QuadSize = 4 * 2 * 3
const QuadSize = int(unsafe.Sizeof(scene.Command{}))
type Quad struct {
From, Ctrl, To f32.Point
@@ -23,26 +26,10 @@ func (q Quad) Transform(t f32.Affine2D) Quad {
return q
}
func EncodeQuad(d []byte, q Quad) {
d = d[:24]
bo := binary.LittleEndian
bo.PutUint32(d[0:], math.Float32bits(q.From.X))
bo.PutUint32(d[4:], math.Float32bits(q.From.Y))
bo.PutUint32(d[8:], math.Float32bits(q.Ctrl.X))
bo.PutUint32(d[12:], math.Float32bits(q.Ctrl.Y))
bo.PutUint32(d[16:], math.Float32bits(q.To.X))
bo.PutUint32(d[20:], math.Float32bits(q.To.Y))
}
func DecodeQuad(d []byte) (q Quad) {
d = d[:24]
bo := binary.LittleEndian
q.From.X = math.Float32frombits(bo.Uint32(d[0:]))
q.From.Y = math.Float32frombits(bo.Uint32(d[4:]))
q.Ctrl.X = math.Float32frombits(bo.Uint32(d[8:]))
q.Ctrl.Y = math.Float32frombits(bo.Uint32(d[12:]))
q.To.X = math.Float32frombits(bo.Uint32(d[16:]))
q.To.Y = math.Float32frombits(bo.Uint32(d[20:]))
var cmd scene.Command
copy(byteslice.Slice(cmd[:]), d)
q.From, q.Ctrl, q.To = scene.DecodeQuad(cmd)
return
}