[mutter/gbsneto/graphene: 2/2] cogl/matrix-stack: Use graphene types on entries

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit ee0198c5db7cc320d9380f5f7c0067dce2915020
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Thu Feb 21 09:56:51 2019 -0300

    cogl/matrix-stack: Use graphene types on entries
    
    This will help moving to graphene_matrix_t, since the convertions
    between nodes and graphene types won't be necessary anymore.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/458

 cogl/cogl/cogl-matrix-stack-private.h |  8 ++----
 cogl/cogl/cogl-matrix-stack.c         | 53 +++++++++++++++--------------------
 2 files changed, 25 insertions(+), 36 deletions(-)
---
diff --git a/cogl/cogl/cogl-matrix-stack-private.h b/cogl/cogl/cogl-matrix-stack-private.h
index 0678d199e..c442782cf 100644
--- a/cogl/cogl/cogl-matrix-stack-private.h
+++ b/cogl/cogl/cogl-matrix-stack-private.h
@@ -68,9 +68,7 @@ typedef struct _CoglMatrixEntryTranslate
 {
   CoglMatrixEntry _parent_data;
 
-  float x;
-  float y;
-  float z;
+  graphene_point3d_t translate;
 
 } CoglMatrixEntryTranslate;
 
@@ -79,9 +77,7 @@ typedef struct _CoglMatrixEntryRotate
   CoglMatrixEntry _parent_data;
 
   float angle;
-  float x;
-  float y;
-  float z;
+  graphene_vec3_t axis;
 
 } CoglMatrixEntryRotate;
 
diff --git a/cogl/cogl/cogl-matrix-stack.c b/cogl/cogl/cogl-matrix-stack.c
index 3b9300f05..fb0330089 100644
--- a/cogl/cogl/cogl-matrix-stack.c
+++ b/cogl/cogl/cogl-matrix-stack.c
@@ -158,9 +158,7 @@ cogl_matrix_stack_translate (CoglMatrixStack *stack,
 
   entry = _cogl_matrix_stack_push_operation (stack, COGL_MATRIX_OP_TRANSLATE);
 
-  entry->x = x;
-  entry->y = y;
-  entry->z = z;
+  graphene_point3d_init (&entry->translate, x, y, z);
 }
 
 void
@@ -175,9 +173,7 @@ cogl_matrix_stack_rotate (CoglMatrixStack *stack,
   entry = _cogl_matrix_stack_push_operation (stack, COGL_MATRIX_OP_ROTATE);
 
   entry->angle = angle;
-  entry->x = x;
-  entry->y = y;
-  entry->z = z;
+  graphene_vec3_init (&entry->axis, x, y, z);
 }
 
 void
@@ -540,9 +536,9 @@ initialized:
             CoglMatrixEntryTranslate *translate =
               (CoglMatrixEntryTranslate *)children[i];
             cogl_matrix_translate (matrix,
-                                   translate->x,
-                                   translate->y,
-                                   translate->z);
+                                   translate->translate.x,
+                                   translate->translate.y,
+                                   translate->translate.z);
             continue;
           }
         case COGL_MATRIX_OP_ROTATE:
@@ -551,9 +547,9 @@ initialized:
               (CoglMatrixEntryRotate *)children[i];
             cogl_matrix_rotate (matrix,
                                 rotate->angle,
-                                rotate->x,
-                                rotate->y,
-                                rotate->z);
+                                graphene_vec3_get_x (&rotate->axis),
+                                graphene_vec3_get_y (&rotate->axis),
+                                graphene_vec3_get_z (&rotate->axis));
             continue;
           }
         case COGL_MATRIX_OP_ROTATE_EULER:
@@ -756,9 +752,9 @@ cogl_matrix_entry_calculate_translation (CoglMatrixEntry *entry0,
 
       translate = (CoglMatrixEntryTranslate *)node0;
 
-      *x = *x - translate->x;
-      *y = *y - translate->y;
-      *z = *z - translate->z;
+      *x = *x - translate->translate.x;
+      *y = *y - translate->translate.y;
+      *z = *z - translate->translate.z;
     }
   for (head1 = common_ancestor1->next; head1; head1 = head1->next)
     {
@@ -771,9 +767,9 @@ cogl_matrix_entry_calculate_translation (CoglMatrixEntry *entry0,
 
       translate = (CoglMatrixEntryTranslate *)node1;
 
-      *x = *x + translate->x;
-      *y = *y + translate->y;
-      *z = *z + translate->z;
+      *x = *x + translate->translate.x;
+      *y = *y + translate->translate.y;
+      *z = *z + translate->translate.z;
     }
 
   return TRUE;
@@ -936,9 +932,8 @@ cogl_matrix_entry_equal (CoglMatrixEntry *entry0,
             /* We could perhaps use an epsilon to compare here?
              * I expect the false negatives are probaly never going to
              * be a problem and this is a bit cheaper. */
-            if (translate0->x != translate1->x ||
-                translate0->y != translate1->y ||
-                translate0->z != translate1->z)
+            if (!graphene_point3d_equal (&translate0->translate,
+                                         &translate1->translate))
               return FALSE;
           }
           break;
@@ -949,9 +944,7 @@ cogl_matrix_entry_equal (CoglMatrixEntry *entry0,
             CoglMatrixEntryRotate *rotate1 =
               (CoglMatrixEntryRotate *)entry1;
             if (rotate0->angle != rotate1->angle ||
-                rotate0->x != rotate1->x ||
-                rotate0->y != rotate1->y ||
-                rotate0->z != rotate1->z)
+                !graphene_vec3_equal (&rotate0->axis, &rotate1->axis))
               return FALSE;
           }
           break;
@@ -1038,9 +1031,9 @@ cogl_debug_matrix_entry_print (CoglMatrixEntry *entry)
             CoglMatrixEntryTranslate *translate =
               (CoglMatrixEntryTranslate *)entry;
             g_print ("  TRANSLATE X=%f Y=%f Z=%f\n",
-                     translate->x,
-                     translate->y,
-                     translate->z);
+                     translate->translate.x,
+                     translate->translate.y,
+                     translate->translate.z);
             continue;
           }
         case COGL_MATRIX_OP_ROTATE:
@@ -1049,9 +1042,9 @@ cogl_debug_matrix_entry_print (CoglMatrixEntry *entry)
               (CoglMatrixEntryRotate *)entry;
             g_print ("  ROTATE ANGLE=%f X=%f Y=%f Z=%f\n",
                      rotate->angle,
-                     rotate->x,
-                     rotate->y,
-                     rotate->z);
+                     graphene_vec3_get_x (&rotate->axis),
+                     graphene_vec3_get_y (&rotate->axis),
+                     graphene_vec3_get_z (&rotate->axis));
             continue;
           }
         case COGL_MATRIX_OP_ROTATE_EULER: