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Simplified mask embedding in parent calculation of pyramid tiles.

This commit is contained in:
Sascha L. Teichmann 2016-05-08 23:07:19 +02:00
parent da2a6a82d4
commit 496a60aa29
1 changed files with 9 additions and 9 deletions
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18
cmd/mtwebmapper/tilesupdater.go
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@ -54,7 +54,7 @@ type xzc struct {
}
type xzm struct {
P xz
xz
Mask uint16
}
@ -70,8 +70,8 @@ func (c xz) parent() xzm {
xp, xr := c.X>>1, uint16(c.X&1)
zp, zr := c.Z>>1, uint16(c.Z&1)
return xzm{
P: xz{X: xp, Z: zp},
Mask: 1 << (zr<<1 | xr)}
xz{X: xp, Z: zp},
1 << (zr<<1 | xr)}
}
func newTileUpdater(
@ -224,7 +224,7 @@ func (tu *tileUpdater) doUpdates() {
parentJobs := make(map[xz]uint16)
for i := range actChs {
pxz := actChs[i].parent()
parentJobs[pxz.P] |= pxz.Mask
parentJobs[pxz.xz] |= pxz.Mask
}
for level := 7; level >= 0; level-- {
@ -235,9 +235,9 @@ func (tu *tileUpdater) doUpdates() {
}
ppJobs := make(map[xz]uint16)
for c, mask := range parentJobs {
pJobs <- xzm{P: c, Mask: mask}
pJobs <- xzm{c, mask}
pxz := c.parent()
ppJobs[pxz.P] |= pxz.Mask
ppJobs[pxz.xz] |= pxz.Mask
}
close(pJobs)
done.Wait()
@ -291,8 +291,8 @@ func (tu *tileUpdater) updatePyramidTile(scratch, resized *image.RGBA, level int
origPath := filepath.Join(
tu.mapDir,
strconv.Itoa(level),
strconv.Itoa(int(j.P.X)),
strconv.Itoa(int(j.P.Z))+".png")
strconv.Itoa(int(j.X)),
strconv.Itoa(int(j.Z))+".png")
sr := resized.Bounds()
levelDir := strconv.Itoa(level + 1)
@ -300,7 +300,7 @@ func (tu *tileUpdater) updatePyramidTile(scratch, resized *image.RGBA, level int
if j.Mask&(1<<i) != 0 {
//log.Printf("level %d: modified %d\n", level, i)
o := ofs[i]
bx, bz := int(2*j.P.X), int(2*j.P.Z)
bx, bz := int(2*j.X), int(2*j.Z)
path := filepath.Join(
tu.mapDir,
levelDir,