Particle Sampler Info и Place3dTexture

[Евгений Давыденко]

Problema v sleduyushem.
Hotelos' by zateksturirovat' particly pri pomoshi 3D Tekstury
(oblako naprimer kakoenit' statichnoe)
a potom vozdeistvovat' na nih polami i drugimi dinamicheskimi metodami
no pri etom chtoby tekstura na kazhdom partikle ostavalas' kak v pervom freime
gde oni byli zateksturirovany a ne plyla skvoz' nih pri dvizhenii.
Dlya resheniya etoi problemy
byl napisan prosten'kii runtime expression v particleShape node
kotoryi vychislyayet raznizu mezhdu initial position i tekushei posiziey

particleShape1.userVector1PP = particleShape1.position0 - particleShape1.position;

a potom pri pomoshi particleSamplerInfo
eto znachenie podayetsya v place3dTexture.translate

particleSamplerInfo.userVector1PP -> place3Dtexture.translate
place3Dtexture -> lubaya3Dtextura
lubaya3Dtextura -> particleCloud.color ili Incadesence

NO NICHEGO NE RABOTAET !!!!
esli podavat' eto zhnachenie v particleCloud.color to zveta izmenyayutsya
v zavisimosti ot udalenia ot nachal'noi pozizii partikla

particleSamplerInfo.userVector1PP -> particleCloud.color ili Incadesence

a vot placement stoit na meste
to est' pri renderinge vse ravno partikly plyvut skvoz' teksturu
(prichem tekstura stoit a ne letit kudato v nepravil'nom napravlenii)

Esli kto nibud' imeet kakie-libo soobrazheniya to budu ochen' priznatelen.