TheCloud/panda3d
1
0
Fork 0
mirror of https://github.com/panda3d/panda3d.git synced 2025-09-30 00:32:57 -04:00
Code Issues Packages Projects Releases Wiki Activity

Correct position of viewing axis for off-axis lens frustum (with thanks to tobspr)

Browse Source
This commit is contained in:
rdb 2015-11-07 16:42:06 +01:00
parent 04949501c6
commit 47fdb9b748
1 changed files with 18 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
panda/src/gobj/lens.cxx
View File

@ -1817,12 +1817,13 @@ do_define_geom_data(CData *cdata) {
if (!is_linear()) {
num_segments = lens_geom_segments;
}
if (cdata->_geom_data == (GeomVertexData *)NULL) {
cdata->_geom_data = new GeomVertexData
("lens", GeomVertexFormat::get_v3(),
Geom::UH_dynamic);
}
cdata->_geom_data->unclean_set_num_rows(num_segments * 8 + 2);
GeomVertexWriter vertex(cdata->_geom_data, InternalName::get_vertex());
LPoint3 near_point, far_point;
@ -1835,8 +1836,8 @@ do_define_geom_data(CData *cdata) {
// Hey, this point is off the lens! Can't do a frustum.
return 0;
}
vertex.add_data3(near_point);
vertex.add_data3(far_point);
vertex.set_data3(near_point);
vertex.set_data3(far_point);
// Upper right, right edge.
LPoint3 p2(1.0f, 1.0f - t, 0.0f);
@ -1844,8 +1845,8 @@ do_define_geom_data(CData *cdata) {
// Hey, this point is off the lens! Can't do a frustum.
return 0;
}
vertex.add_data3(near_point);
vertex.add_data3(far_point);
vertex.set_data3(near_point);
vertex.set_data3(far_point);
// Lower right, bottom edge.
LPoint3 p3(1.0f - t, -1.0f, 0.0f);
@ -1853,8 +1854,8 @@ do_define_geom_data(CData *cdata) {
// Hey, this point is off the lens! Can't do a frustum.
return 0;
}
vertex.add_data3(near_point);
vertex.add_data3(far_point);
vertex.set_data3(near_point);
vertex.set_data3(far_point);
// Lower left, left edge.
LPoint3 p4(-1.0f, -1.0f + t, 0.0f);
@ -1862,19 +1863,20 @@ do_define_geom_data(CData *cdata) {
// Hey, this point is off the lens! Can't do a frustum.
return 0;
}
vertex.add_data3(near_point);
vertex.add_data3(far_point);
vertex.set_data3(near_point);
vertex.set_data3(far_point);
}
// Finally, add one more pair for the viewing axis (or more
// specifically, the center of the lens).
LPoint3 pc(-cdata->_film_offset[0], -cdata->_film_offset[1], 0.0f);
// Finally, add one more pair for the viewing axis (or more specifically, the
// center of the lens).
LPoint3 pc(0);
if (!do_extrude(cdata, pc, near_point, far_point)) {
vertex.add_data3(0.0f, 0.0f, 0.0f);
vertex.add_data3(0.0f, 0.0f, 0.0f);
vertex.set_data3(0.0f, 0.0f, 0.0f);
vertex.set_data3(0.0f, 0.0f, 0.0f);
} else {
vertex.add_data3(near_point);
vertex.add_data3(far_point);
vertex.set_data3(near_point);
vertex.set_data3(far_point);
}
return num_segments;