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LibGfx: Use some AK/Math helpers in AffineTransform

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This makes us use AK::sincos and AK::hypot
This commit is contained in:
Hendiadyoin1 2022-04-13 21:56:13 +02:00 • committed by Linus Groh
parent 5fd49b9d9f
commit db0ba9f647
1 changed files with 5 additions and 10 deletions
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15
Userland/Libraries/LibGfx/AffineTransform.cpp
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@ -21,20 +21,14 @@ bool AffineTransform::is_identity_or_translation() const
return a() == 1 && b() == 0 && c() == 0 && d() == 1;
}
static float hypotenuse(float x, float y)
{
// FIXME: This won't handle overflow :(
return sqrtf(x * x + y * y);
}
float AffineTransform::x_scale() const
{
return hypotenuse(m_values[0], m_values[1]);
return AK::hypot(m_values[0], m_values[1]);
}
float AffineTransform::y_scale() const
{
return hypotenuse(m_values[2], m_values[3]);
return AK::hypot(m_values[2], m_values[3]);
}
FloatPoint AffineTransform::scale() const
@ -124,8 +118,9 @@ AffineTransform& AffineTransform::multiply(AffineTransform const& other)
AffineTransform& AffineTransform::rotate_radians(float radians)
{
float sin_angle = sinf(radians);
float cos_angle = cosf(radians);
float sin_angle;
float cos_angle;
AK::sincos(radians, sin_angle, cos_angle);
AffineTransform rotation(cos_angle, sin_angle, -sin_angle, cos_angle, 0, 0);
multiply(rotation);
return *this;