3673c4db6d
Moved the old source code temporarily to src-old. This will be removed once the functionality has been transferred over into the new system. The new design is based on algebraic principles. Thanks goes to sebcrozet and his nalgebra library for providing the inspiration for the algebraic traits: https://github.com/sebcrozet/nalgebra
134 lines
4.5 KiB
Rust
134 lines
4.5 KiB
Rust
// Copyright 2013 The Lmath Developers. For a full listing of the authors,
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// refer to the AUTHORS file at the top-level directory of this distribution.
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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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// http://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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#[macro_escape];
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macro_rules! impl_dimensioned(
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($Self:ident, $T:ty, $n:expr) => (
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impl<T> Dimensioned<$T,[$T,..$n]> for $Self<T> {
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#[inline]
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pub fn i<'a>(&'a self, i: uint) -> &'a $T {
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&'a self.as_slice()[i]
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}
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#[inline]
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pub fn mut_i<'a>(&'a mut self, i: uint) -> &'a mut $T {
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&'a mut self.as_mut_slice()[i]
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}
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#[inline]
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pub fn as_slice<'a>(&'a self) -> &'a [$T,..$n] {
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use std::cast::transmute;
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unsafe { transmute(self) }
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}
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#[inline]
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pub fn as_mut_slice<'a>(&'a mut self) -> &'a mut [$T,..$n] {
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use std::cast::transmute;
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unsafe { transmute(self) }
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}
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}
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);
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($Self:ident) => (
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impl Dimensioned<$Self,[$Self,..1]> for $Self {
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#[inline]
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pub fn i<'a>(&'a self, i: uint) -> &'a $Self {
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&'a self.as_slice()[i]
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}
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#[inline]
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pub fn mut_i<'a>(&'a mut self, i: uint) -> &'a mut $Self {
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&'a mut self.as_mut_slice()[i]
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}
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#[inline]
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pub fn as_slice<'a>(&'a self) -> &'a [$Self,..1] {
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use std::cast::transmute;
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unsafe { transmute(self) }
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}
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#[inline]
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pub fn as_mut_slice<'a>(&'a mut self) -> &'a mut [$Self,..1] {
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use std::cast::transmute;
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unsafe { transmute(self) }
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}
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}
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)
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)
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macro_rules! impl_to_vec(
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($Self:ident, 2) => (impl_to_vec_helper!(ToVec2, $Self, Vec2, to_vec2, as_vec2));
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($Self:ident, 3) => (impl_to_vec_helper!(ToVec3, $Self, Vec3, to_vec3, as_vec3));
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($Self:ident, 4) => (impl_to_vec_helper!(ToVec4, $Self, Vec4, to_vec4, as_vec4));
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)
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macro_rules! impl_to_vec_helper(
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($ToVec:ident, $Self:ident, $Vec:ident, $to_vec:ident, $as_vec:ident) => (
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impl<T:Clone> $ToVec<T> for $Self<T> {
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#[inline]
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pub fn $to_vec(&self) -> $Vec<T> {
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self.$as_vec().clone()
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}
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}
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)
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)
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macro_rules! impl_as_vec(
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($Self:ident, 2) => (impl_as_vec_helper!(AsVec2, $Self, Vec2, as_vec2, as_mut_vec2, with_vec2));
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($Self:ident, 3) => (impl_as_vec_helper!(AsVec3, $Self, Vec3, as_vec3, as_mut_vec3, with_vec3));
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($Self:ident, 4) => (impl_as_vec_helper!(AsVec4, $Self, Vec4, as_vec4, as_mut_vec4, with_vec4));
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)
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macro_rules! impl_as_vec_helper(
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($AsVec:ident, $Self:ident, $Vec:ident, $as_vec:ident, $as_mut_vec:ident, $with_vec:ident) => (
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impl<T> $AsVec<T> for $Self<T> {
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/// Safely transmute to a vec.
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#[inline]
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pub fn $as_vec<'a>(&'a self) -> &'a $Vec<T> {
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use std::cast::transmute;
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unsafe { transmute(self) }
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}
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/// Safely transmute to a mutable vec.
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#[inline]
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pub fn $as_mut_vec<'a>(&'a mut self) -> &'a mut $Vec<T> {
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use std::cast::transmute;
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unsafe { transmute(self) }
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}
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/// Operate on `self` transmuted to a vec, then return the result as
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/// transmuted back to the `Self` type.
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#[inline]
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pub fn $with_vec<'a>(&'a self, f: &fn(&'a $Vec<T>) -> $Vec<T>) -> $Self<T> {
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use std::cast::transmute;
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unsafe { transmute(f(self.$as_vec())) }
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}
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}
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)
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)
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macro_rules! impl_swap_components(
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($Self:ident) => (
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impl<T:Clone> SwapComponents for $Self<T> {
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#[inline]
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pub fn swap(&mut self, a: uint, b: uint) {
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let tmp = self.i(a).clone();
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*self.mut_i(a) = self.i(b).clone();
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*self.mut_i(b) = tmp;
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}
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}
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)
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)
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