yang686526

texture 3d orientation question
texture 3d orientation question
hi
i have a question about texture 3d orientation. let's have two planes - one that is vertically oriented and one that is horizontally. when i want to map a texture to both i have to check the useautoaxis option to render them properly, otherwise one of the walls will not be mapped. so i think that there is some kind of a texture coordinate plane that is used to define how the texture should be oriented and maybe when the useautoaxis option is not selected this plane is ignored . if this option is selected, the coordinate plane is get for each entity.
so my question is: is there indeed such a plane and how can i get the texture orientation for each object?
thanks in advance
nino
quote:
originally posted by nino
hi
i have a question about texture 3d orientation. let's have two planes - one that is vertically oriented and one that is horizontally. when i want to map a texture to both i have to check the useautoaxis option to render them properly, otherwise one of the walls will not be mapped. so i think that there is some kind of a texture coordinate plane that is used to define how the texture should be oriented and maybe when the useautoaxis option is not selected this plane is ignored . if this option is selected, the coordinate plane is get for each entity.
so my question is: is there indeed such a plane and how can i get the texture orientation for each object?
thanks in advance
nino
i forgot to mention that i use acad 2002 and all the settings above are made with the material dialog.
hi,
to define how material is mapped onto an object acad can use ave_entity_material xdata of the object (but it is not obligatory, see acad's "setuv" description). at the moment dd does not provide separate interface for mapping xdata. it will be added in the next release.
also acad's help contains some information about mapping (it depends on projection type, map style).
quote:
use auto axis
maps materials on xy-, yz-, and xz-oriented surfaces. if this option is not selected, only xy-oriented surfaces are mapped for fixed scale mapping.
auto axis does not use polygon normals when calculating material orientations. instead, polygons facing in positive xyz directions are considered front faces, and polygons facing in negative xyz directions are considered back faces.
regards,
sergey vishnevetsky
quote:
originally posted by sergey vishnevetsky
hi,
to define how material is mapped onto an object acad can use ave_entity_material xdata of the object (but it is not obligatory, see acad's "setuv" description). at the moment dd does not provide separate interface for mapping xdata. it will be added in the next release.
also acad's help contains some information about mapping (it depends on projection type, map style).
thanks for the answer.
regards
nino