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LibWeb: Add DOMMatrix scale and scale3d

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Bastiaan van der Plaat 2023-09-07 21:27:34 +02:00 • committed by Andrew Kaster
parent 67f6a9ee12
commit 42c2a67c83
8 changed files with 125 additions and 5 deletions
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45
Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp
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@ -326,6 +326,51 @@ JS::NonnullGCPtr<DOMMatrix> DOMMatrix::translate_self(Optional<double> tx, Optio
return *this;
}
// https://drafts.fxtf.org/geometry/#dom-dommatrix-scaleself
JS::NonnullGCPtr<DOMMatrix> DOMMatrix::scale_self(Optional<double> scale_x, Optional<double> scale_y, Optional<double> scale_z, Optional<double> origin_x, Optional<double> origin_y, Optional<double> origin_z)
{
// 1. Perform a translateSelf() transformation on the current matrix with the arguments originX, originY, originZ.
translate_self(origin_x, origin_y, origin_z);
// 2. If scaleY is missing, set scaleY to the value of scaleX.
if (!scale_y.has_value())
scale_y = scale_x.value_or(1);
// 3. Post-multiply a non-uniform scale transformation on the current matrix. The 3D scale matrix is described in CSS Transforms with sx = scaleX, sy = scaleY and sz = scaleZ. [CSS3-TRANSFORMS]
m_matrix = m_matrix * Gfx::scale_matrix(Vector3<double> { scale_x.value_or(1), scale_y.value(), scale_z.value_or(1) });
// 4. Negate originX, originY and originZ.
// 5. Perform a translateSelf() transformation on the current matrix with the arguments originX, originY, originZ.
translate_self(-origin_x.value_or(0), -origin_y.value_or(0), -origin_z.value_or(0));
// 6. If scaleZ is not 1, set is 2D of the current matrix to false.
if (scale_z != 1)
m_is_2d = false;
// 7. Return the current matrix.
return *this;
}
// https://drafts.fxtf.org/geometry/#dom-dommatrix-scale3dself
JS::NonnullGCPtr<DOMMatrix> DOMMatrix::scale3d_self(Optional<double> scale, Optional<double> origin_x, Optional<double> origin_y, Optional<double> origin_z)
{
// 1. Apply a translateSelf() transformation to the current matrix with the arguments originX, originY, originZ.
translate_self(origin_x, origin_y, origin_z);
// 2. Post-multiply a uniform 3D scale transformation (m11 = m22 = m33 = scale) on the current matrix. The 3D scale matrix is described in CSS Transforms with sx = sy = sz = scale. [CSS3-TRANSFORMS]
m_matrix = m_matrix * Gfx::scale_matrix(Vector3<double> { scale.value_or(1), scale.value_or(1), scale.value_or(1) });
// 3. Apply a translateSelf() transformation to the current matrix with the arguments -originX, -originY, -originZ.
translate_self(-origin_x.value_or(0), -origin_y.value_or(0), -origin_z.value_or(0));
// 4. If scale is not 1, set is 2D of the current matrix to false.
if (scale != 1)
m_is_2d = false;
// 5. Return the current matrix.
return *this;
}
// https://drafts.fxtf.org/geometry/#dom-dommatrix-skewxself
JS::NonnullGCPtr<DOMMatrix> DOMMatrix::skew_x_self(double sx)
{