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Fix T53002: Batch-Generate Previews generate empty or none image for large objects.

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Camera clipping was left to default values, which won't work well for
very large (or small) objects. Now recompute valid clipping start/end
based on boundingbox of rendered data, and final location of camera.
This commit is contained in:
Bastien Montagne 2017-10-05 18:12:10 +02:00
parent 4537e85584
commit 63482a5f2e
1 changed files with 12 additions and 1 deletions
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13
release/scripts/modules/bl_previews_utils/bl_previews_render.py
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@ -278,7 +278,7 @@ def do_previews(do_objects, do_groups, do_scenes, do_data_intern):
bbox[1].z = v.z
def objects_bbox_calc(camera, objects, offset_matrix):
bbox = (Vector((1e9, 1e9, 1e9)), Vector((-1e9, -1e9, -1e9)))
bbox = (Vector((1e24, 1e24, 1e24)), Vector((-1e24, -1e24, -1e24)))
for obname, libpath in objects:
ob = bpy.data.objects[obname, libpath]
object_bbox_merge(bbox, ob, camera, offset_matrix)
@ -305,6 +305,17 @@ def do_previews(do_objects, do_groups, do_scenes, do_data_intern):
cos = objects_bbox_calc(camera, objects, offset_matrix)
loc, ortho_scale = camera.camera_fit_coords(scene, cos)
camera.location = loc
# Set camera clipping accordingly to computed bbox.
min_dist = 1e24
max_dist = -1e24
for co in zip(*(iter(cos),) * 3):
dist = (Vector(co) - loc).length
if dist < min_dist:
min_dist = dist
if dist > max_dist:
max_dist = dist
camera.data.clip_start = min_dist / 2
camera.data.clip_end = max_dist * 2
if lamp:
loc, ortho_scale = lamp.camera_fit_coords(scene, cos)
lamp.location = loc