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op/clip: automatically close Path in Outlines

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Unclosed path segments in Path will be automatically
closed by a line.

Fixes: https://todo.sr.ht/~eliasnaur/gio/320
Signed-off-by: Pierre Curto <pierre.curto@gmail.com>
This commit is contained in:
Pierre Curto
2021-12-19 17:09:54 +01:00
committed by Elias Naur
parent 0117de71d3
commit 11bb86166a
10 changed files with 123 additions and 28 deletions
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gpu/compute.go
+11 -4
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@@ -1186,12 +1186,19 @@ func min(p1, p2 f32.Point) f32.Point {
return p
}
func (enc *encoder) encodePath(verts []byte) {
for len(verts) >= scene.CommandSize+4 {
func (enc *encoder) encodePath(verts []byte, fillMode int) {
for ; len(verts) >= scene.CommandSize+4; verts = verts[scene.CommandSize+4:] {
cmd := ops.DecodeCommand(verts[4:])
if cmd.Op() == scene.OpGap {
if fillMode != scene.FillModeNonzero {
// Skip gaps in strokes.
continue
}
// Replace them by a straight line in outlines.
cmd = scene.Line(scene.DecodeGap(cmd))
}
enc.scene = append(enc.scene, cmd)
enc.npathseg++
verts = verts[scene.CommandSize+4:]
}
}
@@ -2109,7 +2116,7 @@ func encodeOp(viewport image.Point, absOff image.Point, enc *encoder, texOps []t
if len(cl.path) == 0 {
enc.rect(cl.state.bounds)
} else {
enc.encodePath(cl.path)
enc.encodePath(cl.path, fillMode)
}
if i != 0 {
enc.beginClip(cl.union.Add(absOfff))