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Use f64 for Quaternion.

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The unit of gfxQuaternion in Gecko is gfxFloat, which is "double", so
it's better to use f64 to match the precision of Gecko.
This commit is contained in:
Boris Chiou 2017-08-10 11:38:11 +08:00
parent a5433ad68a
commit 03e1794c12
1 changed files with 17 additions and 17 deletions
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34
components/style/properties/helpers/animated_properties.mako.rs
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@ -1776,7 +1776,7 @@ pub struct Perspective(f32, f32, f32, f32);
/// A quaternion used to represent a rotation.
#[derive(Clone, Copy, Debug)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
pub struct Quaternion(f32, f32, f32, f32);
pub struct Quaternion(f64, f64, f64, f64);
/// A decomposed 3d matrix.
#[derive(Clone, Copy, Debug)]
@ -1914,10 +1914,10 @@ fn decompose_3d_matrix(mut matrix: ComputedMatrix) -> Result<MatrixDecomposed3D,
// Now, get the rotations out
let mut quaternion = Quaternion (
0.5 * ((1.0 + row[0][0] - row[1][1] - row[2][2]).max(0.0)).sqrt(),
0.5 * ((1.0 - row[0][0] + row[1][1] - row[2][2]).max(0.0)).sqrt(),
0.5 * ((1.0 - row[0][0] - row[1][1] + row[2][2]).max(0.0)).sqrt(),
0.5 * ((1.0 + row[0][0] + row[1][1] + row[2][2]).max(0.0)).sqrt()
0.5 * ((1.0 + row[0][0] - row[1][1] - row[2][2]).max(0.0) as f64).sqrt(),
0.5 * ((1.0 - row[0][0] + row[1][1] - row[2][2]).max(0.0) as f64).sqrt(),
0.5 * ((1.0 - row[0][0] - row[1][1] + row[2][2]).max(0.0) as f64).sqrt(),
0.5 * ((1.0 + row[0][0] + row[1][1] + row[2][2]).max(0.0) as f64).sqrt()
);
if row[2][1] > row[1][2] {
@ -2034,7 +2034,7 @@ impl Animatable for MatrixDecomposed3D {
// Determine the scale factor.
let mut theta = clamped_w.acos();
let mut scale = if theta == 0.0 { 0.0 } else { 1.0 / theta.sin() };
theta *= self_portion as f32;
theta *= self_portion;
scale *= theta.sin();
// Scale the self matrix by self_portion.
@ -2068,12 +2068,12 @@ impl Animatable for MatrixDecomposed3D {
}
let theta = product.acos();
let w = (other_portion as f32 * theta).sin() * 1.0 / (1.0 - product * product).sqrt();
let w = (other_portion * theta).sin() * 1.0 / (1.0 - product * product).sqrt();
let mut a = *self;
let mut b = *other;
% for i in range(4):
a.quaternion.${i} *= (other_portion as f32 * theta).cos() - product * w;
a.quaternion.${i} *= (other_portion * theta).cos() - product * w;
b.quaternion.${i} *= w;
sum.quaternion.${i} = a.quaternion.${i} + b.quaternion.${i};
% endfor
@ -2110,15 +2110,15 @@ impl From<MatrixDecomposed3D> for ComputedMatrix {
// Construct a composite rotation matrix from the quaternion values
// rotationMatrix is a identity 4x4 matrix initially
let mut rotation_matrix = ComputedMatrix::identity();
rotation_matrix.m11 = 1.0 - 2.0 * (y * y + z * z);
rotation_matrix.m12 = 2.0 * (x * y + z * w);
rotation_matrix.m13 = 2.0 * (x * z - y * w);
rotation_matrix.m21 = 2.0 * (x * y - z * w);
rotation_matrix.m22 = 1.0 - 2.0 * (x * x + z * z);
rotation_matrix.m23 = 2.0 * (y * z + x * w);
rotation_matrix.m31 = 2.0 * (x * z + y * w);
rotation_matrix.m32 = 2.0 * (y * z - x * w);
rotation_matrix.m33 = 1.0 - 2.0 * (x * x + y * y);
rotation_matrix.m11 = 1.0 - 2.0 * (y * y + z * z) as f32;
rotation_matrix.m12 = 2.0 * (x * y + z * w) as f32;
rotation_matrix.m13 = 2.0 * (x * z - y * w) as f32;
rotation_matrix.m21 = 2.0 * (x * y - z * w) as f32;
rotation_matrix.m22 = 1.0 - 2.0 * (x * x + z * z) as f32;
rotation_matrix.m23 = 2.0 * (y * z + x * w) as f32;
rotation_matrix.m31 = 2.0 * (x * z + y * w) as f32;
rotation_matrix.m32 = 2.0 * (y * z - x * w) as f32;
rotation_matrix.m33 = 1.0 - 2.0 * (x * x + y * y) as f32;
matrix = multiply(rotation_matrix, matrix);