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Use null array for vert indices in place of None

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This commit is contained in:
Grant Sanderson
2023-01-24 15:53:43 -08:00
parent 516fe9155e
commit 72da9786a3
3 changed files with 10 additions and 11 deletions
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2
manimlib/camera/camera.py
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@ -502,7 +502,7 @@ class Camera(object):
# Data buffer
vert_data = shader_wrapper.vert_data
indices = shader_wrapper.vert_indices
if indices is None:
if len(indices) == 0:
ibo = None
elif single_use:
ibo = self.ctx.buffer(indices.astype(np.uint32))

2
manimlib/mobject/mobject.py
View File

@ -1841,7 +1841,7 @@ class Mobject(object):
def init_shader_data(self):
# TODO, only call this when needed?
self.shader_indices = None
self.shader_indices = np.zeros(0)
self.shader_wrapper = ShaderWrapper(
vert_data=self.data,
shader_folder=self.shader_folder,

15
manimlib/shader_wrapper.py
View File

@ -37,7 +37,7 @@ class ShaderWrapper(object):
is_fill: bool = False,
):
self.vert_data = vert_data
self.vert_indices = vert_indices
self.vert_indices = vert_indices or np.zeros(0)
self.vert_attributes = vert_data.dtype.names
self.shader_folder = shader_folder
self.uniforms = uniforms or dict()
@ -68,9 +68,8 @@ class ShaderWrapper(object):
def copy(self):
result = copy.copy(self)
result.vert_data = np.array(self.vert_data)
if result.vert_indices is not None:
result.vert_indices = np.array(self.vert_indices)
result.vert_data = self.vert_data.copy()
result.vert_indices = self.vert_indices.copy()
if self.uniforms:
result.uniforms = {key: np.array(value) for key, value in self.uniforms.items()}
if self.texture_paths:
@ -136,10 +135,7 @@ class ShaderWrapper(object):
def combine_with(self, *shader_wrappers: ShaderWrapper) -> ShaderWrapper:
if len(shader_wrappers) > 0:
data_list = [self.vert_data, *(sw.vert_data for sw in shader_wrappers)]
if self.vert_indices is not None:
indices_list = [self.vert_indices, *(sw.vert_indices for sw in shader_wrappers)]
else:
indices_list = None
self.read_in(data_list, indices_list)
return self
@ -157,10 +153,13 @@ class ShaderWrapper(object):
# Stack the data
np.concatenate(data_list, out=self.vert_data)
if indices_list is None or self.vert_indices is None:
if indices_list is None:
return self
total_verts = sum(len(vi) for vi in indices_list)
if total_verts == 0:
return self
self.vert_indices = resize_array(self.vert_indices, total_verts)
# Stack vert_indices, but adding the appropriate offset