def display_mesh_data(vmesh):
for attrib in vmesh.vertattrib:
usage = modmesh.D3DDECLUSAGE(attrib.usage).name
offset = int(attrib.offset / vmesh.vertformat)
vartype = modmesh.D3DDECLTYPE(attrib.vartype).name
vlen = len(modmesh.D3DDECLTYPE(attrib.vartype))
print('\n### {} {} ###'.format(usage, vartype))
for i in range(vmesh.vertnum):
vstart = offset + i * int(vmesh.vertstride / vmesh.vertformat)
data = vmesh.vertices[vstart:vstart + vlen]
print('[{}] [{}] {},'.format(i, vstart, tuple(data)))
print('\n### INDICES ###\n')
face_vid = 0
for id_vertex in vmesh.index:
face_vid += 1
vstart = id_vertex * int(vmesh.vertstride / vmesh.vertformat)
vdata = vmesh.vertices[vstart:vstart + 3]
print('[{}] {},'.format(id_vertex, tuple(vdata)))
if face_vid == 3:
face_vid = 0
print('')
def print_vertex_data(vmesh, vid, vattribute):
for attrib_id, attrib in enumerate(vmesh.vertattrib):
usage = modmesh.D3DDECLUSAGE(attrib.usage).name
offset = int(attrib.offset / vmesh.vertformat)
vartype = modmesh.D3DDECLTYPE(attrib.vartype).name
vlen = len(modmesh.D3DDECLTYPE(attrib.vartype))
if usage == vattribute:
vstart = offset + vid * int(vmesh.vertstride / vmesh.vertformat)
vdata = vmesh.vertices[vstart:vstart + vlen]
print('[{}]{} = {}'.format(vid, vattribute, vdata))
def remove_attribute(vmesh, attrib_to_remove):
print('start size vmesh.vertices = {}'.format(len(vmesh.vertices)))
vsize = int(vmesh.vertstride / vmesh.vertformat)
offset_attrib = 0
attrib_id_to_remove = 0
total_data_removed = 0
for attrib_id, attrib in enumerate(vmesh.vertattrib):
usage = modmesh.D3DDECLUSAGE(attrib.usage).name
offset = int(attrib.offset / vmesh.vertformat)
vartype = modmesh.D3DDECLTYPE(attrib.vartype).name
vlen = len(modmesh.D3DDECLTYPE(attrib.vartype))
if usage == attrib_to_remove:
print('REMOVING DATA for {}'.format(usage))
offset_attrib = vlen * vmesh.vertformat
attrib_id_to_remove = attrib_id
for vertid in range(vmesh.vertnum - 1, -1, -1):
vstart = offset + vertid * vsize
total_data_removed += vlen
print(
'removing [{}]{}:{} from vertices, {} removed total, current len = {}'
.format(vertid, vstart, vstart + vlen, total_data_removed,
len(vmesh.vertices)))
del vmesh.vertices[vstart:vstart + vlen]
if offset_attrib != 0 and offset != 0:
new_attrib_offset = attrib.offset - offset_attrib
print('MOVING {} offset from {} to {} by {} bytes'.format(
usage, attrib.offset, new_attrib_offset, offset_attrib))
attrib.offset = new_attrib_offset
# remove attribute from table
if attrib_id_to_remove != 0:
# fix vertstride
reduce_stride_by = len(
modmesh.D3DDECLTYPE(vmesh.vertattrib[attrib_id_to_remove].vartype)
) * vmesh.vertformat
print('REDUCING STRIDE from {} to {} by {} bytes'.format(
vmesh.vertstride, vmesh.vertstride - reduce_stride_by,
reduce_stride_by))
vmesh.vertstride = vmesh.vertstride - reduce_stride_by
del vmesh.vertattrib[attrib_id_to_remove]
# fix attrib table len
vmesh.vertattribnum = len(vmesh.vertattrib)
print('vmesh.vertattribnum = {}'.format(vmesh.vertattribnum))
print('new vertices array len = {} after {} removed'.format(
len(vmesh.vertices), total_data_removed))
def edit_vertex(vmesh, vid, vattribute, vdata):
for attrib_id, attrib in enumerate(vmesh.vertattrib):
usage = modmesh.D3DDECLUSAGE(attrib.usage).name
offset = int(attrib.offset / vmesh.vertformat)
vartype = modmesh.D3DDECLTYPE(attrib.vartype).name
vlen = len(modmesh.D3DDECLTYPE(attrib.vartype))
if usage == vattribute:
print('SETTING DATA for v[{}] {}'.format(vid, vattribute))
for vertid in range(vmesh.vertnum - 1, -1, -1):
vstart = offset + vertid * \
int(vmesh.vertstride / vmesh.vertformat)
if vertid == vid:
for i, data in enumerate(vdata):
vmesh.vertices[vstart + i] = data
def _create_vertstride(self):
self.vertstride = sum([
len(modmesh.D3DDECLTYPE(attrib.vartype)) * self.vertformat
for attrib in self.vertattrib
])