nalgebra/nalgebra-glm/src/gtx/transform2d.rs

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use na::{Real, UnitComplex};
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use traits::Number;
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use aliases::{TMat3, TVec2};
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/// Builds a 2D rotation matrix from an angle and right-multiply it to `m`.
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pub fn rotate2d<N: Real>(m: &TMat3<N>, angle: N) -> TMat3<N> {
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m * UnitComplex::new(angle).to_homogeneous()
}
/// Builds a 2D scaling matrix and right-multiply it to `m`.
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pub fn scale2d<N: Number>(m: &TMat3<N>, v: &TVec2<N>) -> TMat3<N> {
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m.prepend_nonuniform_scaling(v)
}
/// Builds a translation matrix and right-multiply it to `m`.
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pub fn translate2d<N: Number>(m: &TMat3<N>, v: &TVec2<N>) -> TMat3<N> {
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m.prepend_translation(v)
}