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</pre><pre class='rust '>
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>ops</span>::{<span class='ident'>Sub</span>, <span class='ident'>Mul</span>, <span class='ident'>Neg</span>};
<span class='kw'>use</span> <span class='ident'>num</span>::{<span class='ident'>Zero</span>, <span class='ident'>One</span>};
<span class='kw'>use</span> <span class='ident'>traits</span>::<span class='ident'>structure</span>::{<span class='ident'>Cast</span>, <span class='ident'>Row</span>, <span class='ident'>Basis</span>, <span class='ident'>BaseFloat</span>};
<span class='kw'>use</span> <span class='ident'>traits</span>::<span class='ident'>geometry</span>::{<span class='ident'>Norm</span>, <span class='ident'>Cross</span>, <span class='ident'>CrossMatrix</span>, <span class='ident'>RotationTo</span>, <span class='ident'>UniformSphereSample</span>};
<span class='kw'>use</span> <span class='ident'>structs</span>::<span class='ident'>vector</span>::{<span class='ident'>Vector1</span>, <span class='ident'>Vector2</span>, <span class='ident'>Vector3</span>, <span class='ident'>Vector4</span>};
<span class='kw'>use</span> <span class='ident'>structs</span>::<span class='ident'>matrix</span>::<span class='ident'>Matrix3</span>;
<span class='kw'>use</span> <span class='ident'>structs</span>::<span class='ident'>rotation</span>::{<span class='ident'>Rotation2</span>, <span class='ident'>Rotation3</span>};
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>BaseFloat</span><span class='op'>></span> <span class='ident'>RotationTo</span> <span class='kw'>for</span> <span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>AngleType</span> <span class='op'>=</span> <span class='ident'>N</span>;
<span class='kw'>type</span> <span class='ident'>DeltaRotationType</span> <span class='op'>=</span> <span class='ident'>Rotation2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>;
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>angle_to</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='self'>Self</span>) <span class='op'>-></span> <span class='ident'>N</span> {
::<span class='ident'>cross</span>(<span class='self'>self</span>, <span class='ident'>other</span>).<span class='ident'>x</span>.<span class='ident'>atan2</span>(::<span class='ident'>dot</span>(<span class='self'>self</span>, <span class='ident'>other</span>))
}
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>rotation_to</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='self'>Self</span>) <span class='op'>-></span> <span class='ident'>Rotation2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='ident'>Rotation2</span>::<span class='ident'>new</span>(<span class='ident'>Vector1</span>::<span class='ident'>new</span>(<span class='self'>self</span>.<span class='ident'>angle_to</span>(<span class='ident'>other</span>)))
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>BaseFloat</span><span class='op'>></span> <span class='ident'>RotationTo</span> <span class='kw'>for</span> <span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>AngleType</span> <span class='op'>=</span> <span class='ident'>N</span>;
<span class='kw'>type</span> <span class='ident'>DeltaRotationType</span> <span class='op'>=</span> <span class='ident'>Rotation3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>;
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>angle_to</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='self'>Self</span>) <span class='op'>-></span> <span class='ident'>N</span> {
::<span class='ident'>cross</span>(<span class='self'>self</span>, <span class='ident'>other</span>).<span class='ident'>norm</span>().<span class='ident'>atan2</span>(::<span class='ident'>dot</span>(<span class='self'>self</span>, <span class='ident'>other</span>))
}
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>rotation_to</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='self'>Self</span>) <span class='op'>-></span> <span class='ident'>Rotation3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>axis</span> <span class='op'>=</span> ::<span class='ident'>cross</span>(<span class='self'>self</span>, <span class='ident'>other</span>);
<span class='kw'>let</span> <span class='ident'>norm</span> <span class='op'>=</span> <span class='ident'>axis</span>.<span class='ident'>normalize_mut</span>();
<span class='kw'>if</span> ::<span class='ident'>is_zero</span>(<span class='kw-2'>&</span><span class='ident'>norm</span>) {
::<span class='ident'>one</span>()
}
<span class='kw'>else</span> {
<span class='kw'>let</span> <span class='ident'>axis_angle</span> <span class='op'>=</span> <span class='ident'>axis</span> <span class='op'>*</span> <span class='ident'>norm</span>.<span class='ident'>atan2</span>(::<span class='ident'>dot</span>(<span class='self'>self</span>, <span class='ident'>other</span>));
<span class='ident'>Rotation3</span>::<span class='ident'>new</span>(<span class='ident'>axis_angle</span>)
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>Copy</span> <span class='op'>+</span> <span class='ident'>Mul</span><span class='op'><</span><span class='ident'>N</span>, <span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>N</span><span class='op'>></span> <span class='op'>+</span> <span class='ident'>Sub</span><span class='op'><</span><span class='ident'>N</span>, <span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>N</span><span class='op'>>></span> <span class='ident'>Cross</span> <span class='kw'>for</span> <span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>CrossProductType</span> <span class='op'>=</span> <span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>;
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>cross</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='ident'>Vector1</span>::<span class='ident'>new</span>(<span class='self'>self</span>.<span class='ident'>x</span> <span class='op'>*</span> <span class='ident'>other</span>.<span class='ident'>y</span> <span class='op'>-</span> <span class='self'>self</span>.<span class='ident'>y</span> <span class='op'>*</span> <span class='ident'>other</span>.<span class='ident'>x</span>)
}
}
<span class='comment'>// FIXME: instead of returning a Vector2, define a Matrix2x1 matrix?</span>
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>Neg</span><span class='op'><</span><span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>N</span><span class='op'>></span> <span class='op'>+</span> <span class='ident'>Copy</span><span class='op'>></span> <span class='ident'>CrossMatrix</span><span class='op'><</span><span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>>></span> <span class='kw'>for</span> <span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>cross_matrix</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='ident'>Vector2</span>::<span class='ident'>new</span>(<span class='op'>-</span><span class='self'>self</span>.<span class='ident'>y</span>, <span class='self'>self</span>.<span class='ident'>x</span>)
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>Copy</span> <span class='op'>+</span> <span class='ident'>Mul</span><span class='op'><</span><span class='ident'>N</span>, <span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>N</span><span class='op'>></span> <span class='op'>+</span> <span class='ident'>Sub</span><span class='op'><</span><span class='ident'>N</span>, <span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>N</span><span class='op'>>></span> <span class='ident'>Cross</span> <span class='kw'>for</span> <span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>CrossProductType</span> <span class='op'>=</span> <span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>;
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>cross</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='ident'>Vector3</span>::<span class='ident'>new</span>(
<span class='self'>self</span>.<span class='ident'>y</span> <span class='op'>*</span> <span class='ident'>other</span>.<span class='ident'>z</span> <span class='op'>-</span> <span class='self'>self</span>.<span class='ident'>z</span> <span class='op'>*</span> <span class='ident'>other</span>.<span class='ident'>y</span>,
<span class='self'>self</span>.<span class='ident'>z</span> <span class='op'>*</span> <span class='ident'>other</span>.<span class='ident'>x</span> <span class='op'>-</span> <span class='self'>self</span>.<span class='ident'>x</span> <span class='op'>*</span> <span class='ident'>other</span>.<span class='ident'>z</span>,
<span class='self'>self</span>.<span class='ident'>x</span> <span class='op'>*</span> <span class='ident'>other</span>.<span class='ident'>y</span> <span class='op'>-</span> <span class='self'>self</span>.<span class='ident'>y</span> <span class='op'>*</span> <span class='ident'>other</span>.<span class='ident'>x</span>
)
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>Neg</span><span class='op'><</span><span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>N</span><span class='op'>></span> <span class='op'>+</span> <span class='ident'>Zero</span> <span class='op'>+</span> <span class='ident'>Copy</span><span class='op'>></span> <span class='ident'>CrossMatrix</span><span class='op'><</span><span class='ident'>Matrix3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>>></span> <span class='kw'>for</span> <span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>cross_matrix</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Matrix3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='ident'>Matrix3</span>::<span class='ident'>new</span>(
::<span class='ident'>zero</span>(), <span class='op'>-</span><span class='self'>self</span>.<span class='ident'>z</span>, <span class='self'>self</span>.<span class='ident'>y</span>,
<span class='self'>self</span>.<span class='ident'>z</span>, ::<span class='ident'>zero</span>(), <span class='op'>-</span><span class='self'>self</span>.<span class='ident'>x</span>,
<span class='op'>-</span><span class='self'>self</span>.<span class='ident'>y</span>, <span class='self'>self</span>.<span class='ident'>x</span>, ::<span class='ident'>zero</span>()
)
}
}
<span class='comment'>// FIXME: implement this for all other vectors</span>
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>Copy</span><span class='op'>></span> <span class='ident'>Row</span><span class='op'><</span><span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>>></span> <span class='kw'>for</span> <span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>nrows</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> {
<span class='number'>2</span>
}
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>row</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>i</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='ident'>i</span> {
<span class='number'>0</span> <span class='op'>=></span> <span class='ident'>Vector1</span>::<span class='ident'>new</span>(<span class='self'>self</span>.<span class='ident'>x</span>),
<span class='number'>1</span> <span class='op'>=></span> <span class='ident'>Vector1</span>::<span class='ident'>new</span>(<span class='self'>self</span>.<span class='ident'>y</span>),
_ <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"Index out of range: 2d vectors do not have {} rows. "</span>, <span class='ident'>i</span>))
}
}
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>set_row</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>i</span>: <span class='ident'>usize</span>, <span class='ident'>r</span>: <span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>) {
<span class='kw'>match</span> <span class='ident'>i</span> {
<span class='number'>0</span> <span class='op'>=></span> <span class='self'>self</span>.<span class='ident'>x</span> <span class='op'>=</span> <span class='ident'>r</span>.<span class='ident'>x</span>,
<span class='number'>1</span> <span class='op'>=></span> <span class='self'>self</span>.<span class='ident'>y</span> <span class='op'>=</span> <span class='ident'>r</span>.<span class='ident'>x</span>,
_ <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"Index out of range: 2d vectors do not have {} rows."</span>, <span class='ident'>i</span>))
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>One</span><span class='op'>></span> <span class='ident'>Basis</span> <span class='kw'>for</span> <span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>(<span class='ident'>always</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>canonical_basis</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>bool</span><span class='op'>></span>(<span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) {
<span class='ident'>f</span>(<span class='ident'>Vector1</span>::<span class='ident'>new</span>(::<span class='ident'>one</span>()));
}
<span class='attribute'>#[<span class='ident'>inline</span>(<span class='ident'>always</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>orthonormal_subspace_basis</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>bool</span><span class='op'>></span>(_: <span class='kw-2'>&</span><span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>, _: <span class='ident'>F</span>) { }
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>canonical_basis_element</span>(<span class='ident'>i</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>>></span> {
<span class='kw'>if</span> <span class='ident'>i</span> <span class='op'>==</span> <span class='number'>0</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>Vector1</span>::<span class='ident'>new</span>(::<span class='ident'>one</span>()))
}
<span class='kw'>else</span> {
<span class='prelude-val'>None</span>
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>Copy</span> <span class='op'>+</span> <span class='ident'>One</span> <span class='op'>+</span> <span class='ident'>Zero</span> <span class='op'>+</span> <span class='ident'>Neg</span><span class='op'><</span><span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>N</span><span class='op'>>></span> <span class='ident'>Basis</span> <span class='kw'>for</span> <span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>(<span class='ident'>always</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>canonical_basis</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>bool</span><span class='op'>></span>(<span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) {
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>f</span>(<span class='ident'>Vector2</span>::<span class='ident'>new</span>(::<span class='ident'>one</span>(), ::<span class='ident'>zero</span>())) { <span class='kw'>return</span> };
<span class='ident'>f</span>(<span class='ident'>Vector2</span>::<span class='ident'>new</span>(::<span class='ident'>zero</span>(), ::<span class='ident'>one</span>()));
}
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>orthonormal_subspace_basis</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>bool</span><span class='op'>></span>(<span class='ident'>n</span>: <span class='kw-2'>&</span><span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>, <span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) {
<span class='ident'>f</span>(<span class='ident'>Vector2</span>::<span class='ident'>new</span>(<span class='op'>-</span><span class='ident'>n</span>.<span class='ident'>y</span>, <span class='ident'>n</span>.<span class='ident'>x</span>));
}
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>canonical_basis_element</span>(<span class='ident'>i</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>>></span> {
<span class='kw'>if</span> <span class='ident'>i</span> <span class='op'>==</span> <span class='number'>0</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>Vector2</span>::<span class='ident'>new</span>(::<span class='ident'>one</span>(), ::<span class='ident'>zero</span>()))
}
<span class='kw'>else</span> <span class='kw'>if</span> <span class='ident'>i</span> <span class='op'>==</span> <span class='number'>1</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>Vector2</span>::<span class='ident'>new</span>(::<span class='ident'>zero</span>(), ::<span class='ident'>one</span>()))
}
<span class='kw'>else</span> {
<span class='prelude-val'>None</span>
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>BaseFloat</span><span class='op'>></span> <span class='ident'>Basis</span> <span class='kw'>for</span> <span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>(<span class='ident'>always</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>canonical_basis</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>bool</span><span class='op'>></span>(<span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) {
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>f</span>(<span class='ident'>Vector3</span>::<span class='ident'>new</span>(::<span class='ident'>one</span>(), ::<span class='ident'>zero</span>(), ::<span class='ident'>zero</span>())) { <span class='kw'>return</span> };
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>f</span>(<span class='ident'>Vector3</span>::<span class='ident'>new</span>(::<span class='ident'>zero</span>(), ::<span class='ident'>one</span>(), ::<span class='ident'>zero</span>())) { <span class='kw'>return</span> };
<span class='ident'>f</span>(<span class='ident'>Vector3</span>::<span class='ident'>new</span>(::<span class='ident'>zero</span>(), ::<span class='ident'>zero</span>(), ::<span class='ident'>one</span>()));
}
<span class='attribute'>#[<span class='ident'>inline</span>(<span class='ident'>always</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>orthonormal_subspace_basis</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>bool</span><span class='op'>></span>(<span class='ident'>n</span>: <span class='kw-2'>&</span><span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>, <span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) {
<span class='kw'>let</span> <span class='ident'>a</span> <span class='op'>=</span>
<span class='kw'>if</span> <span class='ident'>n</span>.<span class='ident'>x</span>.<span class='ident'>abs</span>() <span class='op'>></span> <span class='ident'>n</span>.<span class='ident'>y</span>.<span class='ident'>abs</span>() {
<span class='ident'>Norm</span>::<span class='ident'>normalize</span>(<span class='kw-2'>&</span><span class='ident'>Vector3</span>::<span class='ident'>new</span>(<span class='ident'>n</span>.<span class='ident'>z</span>, ::<span class='ident'>zero</span>(), <span class='op'>-</span><span class='ident'>n</span>.<span class='ident'>x</span>))
}
<span class='kw'>else</span> {
<span class='ident'>Norm</span>::<span class='ident'>normalize</span>(<span class='kw-2'>&</span><span class='ident'>Vector3</span>::<span class='ident'>new</span>(::<span class='ident'>zero</span>(), <span class='op'>-</span><span class='ident'>n</span>.<span class='ident'>z</span>, <span class='ident'>n</span>.<span class='ident'>y</span>))
};
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>f</span>(<span class='ident'>Cross</span>::<span class='ident'>cross</span>(<span class='kw-2'>&</span><span class='ident'>a</span>, <span class='ident'>n</span>)) { <span class='kw'>return</span> };
<span class='ident'>f</span>(<span class='ident'>a</span>);
}
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>canonical_basis_element</span>(<span class='ident'>i</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>>></span> {
<span class='kw'>if</span> <span class='ident'>i</span> <span class='op'>==</span> <span class='number'>0</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>Vector3</span>::<span class='ident'>new</span>(::<span class='ident'>one</span>(), ::<span class='ident'>zero</span>(), ::<span class='ident'>zero</span>()))
}
<span class='kw'>else</span> <span class='kw'>if</span> <span class='ident'>i</span> <span class='op'>==</span> <span class='number'>1</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>Vector3</span>::<span class='ident'>new</span>(::<span class='ident'>zero</span>(), ::<span class='ident'>one</span>(), ::<span class='ident'>zero</span>()))
}
<span class='kw'>else</span> <span class='kw'>if</span> <span class='ident'>i</span> <span class='op'>==</span> <span class='number'>2</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>Vector3</span>::<span class='ident'>new</span>(::<span class='ident'>zero</span>(), ::<span class='ident'>zero</span>(), ::<span class='ident'>one</span>()))
}
<span class='kw'>else</span> {
<span class='prelude-val'>None</span>
}
}
}
<span class='comment'>// FIXME: this bad: this fixes definitly the number of samples…</span>
<span class='kw'>static</span> <span class='ident'>SAMPLES_2_F64</span>: [<span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>f64</span><span class='op'>></span>; <span class='number'>21</span>] <span class='op'>=</span> [
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>1.0</span>, <span class='ident'>y</span>: <span class='number'>0.0</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.95557281</span>, <span class='ident'>y</span>: <span class='number'>0.29475517</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.82623877</span>, <span class='ident'>y</span>: <span class='number'>0.56332006</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.6234898</span>, <span class='ident'>y</span>: <span class='number'>0.78183148</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.36534102</span>, <span class='ident'>y</span>: <span class='number'>0.93087375</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.07473009</span>, <span class='ident'>y</span>: <span class='number'>0.9972038</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.22252093</span>, <span class='ident'>y</span>: <span class='number'>0.97492791</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.5</span>, <span class='ident'>y</span>: <span class='number'>0.8660254</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.73305187</span>, <span class='ident'>y</span>: <span class='number'>0.68017274</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.90096887</span>, <span class='ident'>y</span>: <span class='number'>0.43388374</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.98883083</span>, <span class='ident'>y</span>: <span class='number'>0.14904227</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.98883083</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.14904227</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.90096887</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.43388374</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.73305187</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.68017274</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.5</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.8660254</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.22252093</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.97492791</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.07473009</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.9972038</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.36534102</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.93087375</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.6234898</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.78183148</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.82623877</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.56332006</span> },
<span class='ident'>Vector2</span> { <span class='ident'>x</span>: <span class='number'>0.95557281</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.29475517</span> },
];
<span class='comment'>// Those vectors come from bullet 3d</span>
<span class='kw'>static</span> <span class='ident'>SAMPLES_3_F64</span>: [<span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>f64</span><span class='op'>></span>; <span class='number'>42</span>] <span class='op'>=</span> [
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.000000</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.000000</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>1.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.723608</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.525725</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.447219</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.276388</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.850649</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.447219</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.894426</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.000000</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.447216</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.276388</span>, <span class='ident'>y</span>: <span class='number'>0.850649</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.447220</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.723608</span> , <span class='ident'>y</span>: <span class='number'>0.525725</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.447219</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.276388</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.850649</span>, <span class='ident'>z</span>: <span class='number'>0.447220</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.723608</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.525725</span>, <span class='ident'>z</span>: <span class='number'>0.447219</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.723608</span>, <span class='ident'>y</span>: <span class='number'>0.525725</span> , <span class='ident'>z</span>: <span class='number'>0.447219</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.276388</span> , <span class='ident'>y</span>: <span class='number'>0.850649</span> , <span class='ident'>z</span>: <span class='number'>0.447219</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.894426</span> , <span class='ident'>y</span>: <span class='number'>0.000000</span> , <span class='ident'>z</span>: <span class='number'>0.447216</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.000000</span>, <span class='ident'>y</span>: <span class='number'>0.000000</span> , <span class='ident'>z</span>: <span class='number'>1.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.425323</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.309011</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.850654</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.162456</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.499995</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.850654</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.262869</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.809012</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.525738</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.425323</span> , <span class='ident'>y</span>: <span class='number'>0.309011</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.850654</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.850648</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.000000</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.525736</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.525730</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.000000</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.850652</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.688190</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.499997</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.525736</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.162456</span>, <span class='ident'>y</span>: <span class='number'>0.499995</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.850654</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.688190</span>, <span class='ident'>y</span>: <span class='number'>0.499997</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.525736</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.262869</span> , <span class='ident'>y</span>: <span class='number'>0.809012</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.525738</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.951058</span> , <span class='ident'>y</span>: <span class='number'>0.309013</span> , <span class='ident'>z</span>: <span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.951058</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.309013</span>, <span class='ident'>z</span>: <span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.587786</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.809017</span>, <span class='ident'>z</span>: <span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.000000</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>1.000000</span>, <span class='ident'>z</span>: <span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.587786</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.809017</span>, <span class='ident'>z</span>: <span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.951058</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.309013</span>, <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.951058</span>, <span class='ident'>y</span>: <span class='number'>0.309013</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.587786</span>, <span class='ident'>y</span>: <span class='number'>0.809017</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.000000</span>, <span class='ident'>y</span>: <span class='number'>1.000000</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.587786</span> , <span class='ident'>y</span>: <span class='number'>0.809017</span> , <span class='ident'>z</span>: <span class='op'>-</span><span class='number'>0.000000</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.688190</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.499997</span>, <span class='ident'>z</span>: <span class='number'>0.525736</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.262869</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.809012</span>, <span class='ident'>z</span>: <span class='number'>0.525738</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.850648</span>, <span class='ident'>y</span>: <span class='number'>0.000000</span> , <span class='ident'>z</span>: <span class='number'>0.525736</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.262869</span>, <span class='ident'>y</span>: <span class='number'>0.809012</span> , <span class='ident'>z</span>: <span class='number'>0.525738</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.688190</span> , <span class='ident'>y</span>: <span class='number'>0.499997</span> , <span class='ident'>z</span>: <span class='number'>0.525736</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.525730</span> , <span class='ident'>y</span>: <span class='number'>0.000000</span> , <span class='ident'>z</span>: <span class='number'>0.850652</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.162456</span> , <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.499995</span>, <span class='ident'>z</span>: <span class='number'>0.850654</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.425323</span>, <span class='ident'>y</span>: <span class='op'>-</span><span class='number'>0.309011</span>, <span class='ident'>z</span>: <span class='number'>0.850654</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='op'>-</span><span class='number'>0.425323</span>, <span class='ident'>y</span>: <span class='number'>0.309011</span> , <span class='ident'>z</span>: <span class='number'>0.850654</span> },
<span class='ident'>Vector3</span> { <span class='ident'>x</span>: <span class='number'>0.162456</span> , <span class='ident'>y</span>: <span class='number'>0.499995</span> , <span class='ident'>z</span>: <span class='number'>0.850654</span> }
];
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> <span class='ident'>UniformSphereSample</span> <span class='kw'>for</span> <span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>
<span class='kw'>where</span> <span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>: <span class='ident'>One</span> {
<span class='attribute'>#[<span class='ident'>inline</span>(<span class='ident'>always</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>sample</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector1</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>)<span class='op'>></span>(<span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) {
<span class='ident'>f</span>(::<span class='ident'>one</span>())
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>Cast</span><span class='op'><</span><span class='ident'>f64</span><span class='op'>></span> <span class='op'>+</span> <span class='ident'>Copy</span><span class='op'>></span> <span class='ident'>UniformSphereSample</span> <span class='kw'>for</span> <span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>(<span class='ident'>always</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>sample</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector2</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>)<span class='op'>></span>(<span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) {
<span class='kw'>for</span> <span class='ident'>sample</span> <span class='kw'>in</span> <span class='ident'>SAMPLES_2_F64</span>.<span class='ident'>iter</span>() {
<span class='ident'>f</span>(<span class='ident'>Cast</span>::<span class='ident'>from</span>(<span class='op'>*</span><span class='ident'>sample</span>))
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>Cast</span><span class='op'><</span><span class='ident'>f64</span><span class='op'>></span> <span class='op'>+</span> <span class='ident'>Copy</span><span class='op'>></span> <span class='ident'>UniformSphereSample</span> <span class='kw'>for</span> <span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>(<span class='ident'>always</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>sample</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector3</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>)<span class='op'>></span>(<span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) {
<span class='kw'>for</span> <span class='ident'>sample</span> <span class='kw'>in</span> <span class='ident'>SAMPLES_3_F64</span>.<span class='ident'>iter</span>() {
<span class='ident'>f</span>(<span class='ident'>Cast</span>::<span class='ident'>from</span>(<span class='op'>*</span><span class='ident'>sample</span>))
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>N</span>: <span class='ident'>Cast</span><span class='op'><</span><span class='ident'>f64</span><span class='op'>></span> <span class='op'>+</span> <span class='ident'>Copy</span><span class='op'>></span> <span class='ident'>UniformSphereSample</span> <span class='kw'>for</span> <span class='ident'>Vector4</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>(<span class='ident'>always</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>sample</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='ident'>Vector4</span><span class='op'><</span><span class='ident'>N</span><span class='op'>></span>)<span class='op'>></span>(_: <span class='ident'>F</span>) {
<span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"UniformSphereSample::<Vector4<N>>::sample : Not yet implemented."</span>)
<span class='comment'>// for sample in SAMPLES_3_F32.iter() {</span>
<span class='comment'>// f(Cast::from(*sample))</span>
<span class='comment'>// }</span>
}
}
</pre>
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