mirror of
https://github.com/italicsjenga/vello.git
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520f6d0d41
* remove area clamp in fine (now in #241) * make DrawTag::info_size() const fn * document DrawColor rgba field * change Monoid type parameter to an associated type and describe the additional Default constraint * consistent parens in PathTag::is_subpath_end * add comments for 32-bit path segment types in PathTag * also adds low level encoding functions for the three currently supported brushes
29 lines
1 KiB
Rust
29 lines
1 KiB
Rust
// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Also licensed under MIT license, at your choice.
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/// Interface for a monoid. The default value must be the identity of
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/// the monoid.
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pub trait Monoid: Default {
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/// The source value for constructing the monoid.
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type SourceValue;
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/// Creates a monoid from a given value.
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fn new(value: Self::SourceValue) -> Self;
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/// Combines two monoids. This operation must be associative.
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fn combine(&self, other: &Self) -> Self;
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}
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