Cleanup: use M_PI_2 and M_PI_4 where possible

The constant M_PI_4 is added to GLSL to ensure it works there too.

Differential Revision: https://developer.blender.org/D14288

3 files changed, 4 insertions, 4 deletions

diff --git a/source/blender/blenkernel/intern/armature_test.cc b/source/blender/blenkernel/intern/armature_test.cc
index 7475e6f36d4..4d266c8493a 100644
--- a/source/blender/blenkernel/intern/armature_test.cc
+++ b/source/blender/blenkernel/intern/armature_test.cc
@@ -285,7 +285,7 @@ TEST(vec_roll_to_mat3_normalized, Roll1)
   const float expected_roll_mat[3][3] = {{0.211324856f, 0.577350259f, -0.788675129f},
                                          {0.577350259f, 0.577350259f, 0.577350259f},
                                          {0.788675129f, -0.577350259f, -0.211324856f}};
-  test_vec_roll_to_mat3_normalized(input, float(M_PI * 0.5), expected_roll_mat);
+  test_vec_roll_to_mat3_normalized(input, float(M_PI_2), expected_roll_mat);
 }
 
 /** Test that the matrix is orthogonal for an input close to -Y. */
diff --git a/source/blender/blenkernel/intern/mask.c b/source/blender/blenkernel/intern/mask.c
index da0f899001c..42e65a95404 100644
--- a/source/blender/blenkernel/intern/mask.c
+++ b/source/blender/blenkernel/intern/mask.c
@@ -609,7 +609,7 @@ float BKE_mask_spline_project_co(MaskSpline *spline,
 
         if (len_squared_v2(v1) > proj_eps_sq) {
           ang1 = angle_v2v2(v1, n1);
-          if (ang1 > (float)M_PI / 2.0f) {
+          if (ang1 > (float)M_PI_2) {
             ang1 = (float)M_PI - ang1;
           }
 
@@ -635,7 +635,7 @@ float BKE_mask_spline_project_co(MaskSpline *spline,
 
         if (len_squared_v2(v2) > proj_eps_sq) {
           ang2 = angle_v2v2(v2, n2);
-          if (ang2 > (float)M_PI / 2.0f) {
+          if (ang2 > (float)M_PI_2) {
             ang2 = (float)M_PI - ang2;
           }
 
diff --git a/source/blender/blenkernel/intern/particle_child.c b/source/blender/blenkernel/intern/particle_child.c
index 7a2e4eb4ac9..8106ae8b302 100644
--- a/source/blender/blenkernel/intern/particle_child.c
+++ b/source/blender/blenkernel/intern/particle_child.c
@@ -85,7 +85,7 @@ static void do_kink_spiral_deform(ParticleKey *state,
      * and goes up to the Golden Spiral for 1.0
      * https://en.wikipedia.org/wiki/Golden_spiral
      */
-    const float b = shape * (1.0f + sqrtf(5.0f)) / (float)M_PI * 0.25f;
+    const float b = shape * (1.0f + sqrtf(5.0f)) / (float)M_PI_4;
     /* angle of the spiral against the curve (rotated opposite to make a smooth transition) */
     const float start_angle = ((b != 0.0f) ? atanf(1.0f / b) : (float)-M_PI_2) +
                               (b > 0.0f ? -(float)M_PI_2 : (float)M_PI_2);