[clutter/fosdem-2012] Remove use of CoglVector3

[Neil Roberts <nroberts src gnome org>]

commit 6f3b4b3f4794d857cfdc54eeec207f61ef699245
Author: Neil Roberts <neil linux intel com>
Date:   Mon Jan 16 15:22:43 2012 +0000

    Remove use of CoglVector3
    
    Cogl has removed the CoglVector3 type in favour of directly using an
    array of 3 floats.

 clutter/clutter-paint-volume.c |   11 ++++++-----
 clutter/clutter-private.h      |    4 ++--
 clutter/clutter-stage.c        |   32 ++++++++++++++++----------------
 3 files changed, 24 insertions(+), 23 deletions(-)
---
diff --git a/clutter/clutter-paint-volume.c b/clutter/clutter-paint-volume.c
index 512c49c..5b54274 100644
--- a/clutter/clutter-paint-volume.c
+++ b/clutter/clutter-paint-volume.c
@@ -1063,12 +1063,13 @@ _clutter_paint_volume_cull (ClutterPaintVolume *pv,
           /* XXX: for perspective projections this can be optimized
            * out because all the planes should pass through the origin
            * so (0,0,0) is a valid v0. */
-          p.x = vertices[j].x - planes[i].v0.x;
-          p.y = vertices[j].y - planes[i].v0.y;
-          p.z = vertices[j].z - planes[i].v0.z;
+          p.x = vertices[j].x - planes[i].v0[0];
+          p.y = vertices[j].y - planes[i].v0[1];
+          p.z = vertices[j].z - planes[i].v0[2];
 
-          distance =
-            planes[i].n.x * p.x + planes[i].n.y * p.y + planes[i].n.z * p.z;
+          distance = (planes[i].n[0] * p.x +
+                      planes[i].n[1] * p.y +
+                      planes[i].n[2] * p.z);
 
           if (distance < 0)
             out++;
diff --git a/clutter/clutter-private.h b/clutter/clutter-private.h
index 51841cf..df17d6a 100644
--- a/clutter/clutter-private.h
+++ b/clutter/clutter-private.h
@@ -253,8 +253,8 @@ void _clutter_util_rectangle_union (const cairo_rectangle_int_t *src1,
 
 typedef struct _ClutterPlane
 {
-  CoglVector3 v0;
-  CoglVector3 n;
+  float v0[3];
+  float n[3];
 } ClutterPlane;
 
 typedef enum _ClutterCullResult
diff --git a/clutter/clutter-stage.c b/clutter/clutter-stage.c
index 47539b0..ac503c0 100644
--- a/clutter/clutter-stage.c
+++ b/clutter/clutter-stage.c
@@ -439,8 +439,8 @@ _cogl_util_get_eye_planes_for_screen_poly (float *polygon,
   Vector4 *tmp_poly;
   ClutterPlane *plane;
   int i;
-  CoglVector3 b;
-  CoglVector3 c;
+  float b[3];
+  float c[3];
   int count;
 
   tmp_poly = g_alloca (sizeof (Vector4) * n_vertices * 2);
@@ -507,23 +507,23 @@ _cogl_util_get_eye_planes_for_screen_poly (float *polygon,
   for (i = 0; i < count; i++)
     {
       plane = &planes[i];
-      plane->v0 = *(CoglVector3 *)&tmp_poly[i];
-      b = *(CoglVector3 *)&tmp_poly[n_vertices + i];
-      c = *(CoglVector3 *)&tmp_poly[n_vertices + i + 1];
-      cogl_vector3_subtract (&b, &b, &plane->v0);
-      cogl_vector3_subtract (&c, &c, &plane->v0);
-      cogl_vector3_cross_product (&plane->n, &b, &c);
-      cogl_vector3_normalize (&plane->n);
+      memcpy (plane->v0, tmp_poly + i, sizeof (float) * 3);
+      memcpy (b, tmp_poly + n_vertices + i, sizeof (float) * 3);
+      memcpy (c, tmp_poly + n_vertices + i + 1, sizeof (float) * 3);
+      cogl_vector3_subtract (b, b, plane->v0);
+      cogl_vector3_subtract (c, c, plane->v0);
+      cogl_vector3_cross_product (plane->n, b, c);
+      cogl_vector3_normalize (plane->n);
     }
 
   plane = &planes[n_vertices - 1];
-  plane->v0 = *(CoglVector3 *)&tmp_poly[0];
-  b = *(CoglVector3 *)&tmp_poly[2 * n_vertices - 1];
-  c = *(CoglVector3 *)&tmp_poly[n_vertices];
-  cogl_vector3_subtract (&b, &b, &plane->v0);
-  cogl_vector3_subtract (&c, &c, &plane->v0);
-  cogl_vector3_cross_product (&plane->n, &b, &c);
-  cogl_vector3_normalize (&plane->n);
+  memcpy (plane->v0, tmp_poly + 0, sizeof (float) * 3);
+  memcpy (b, tmp_poly + (2 * n_vertices - 1), sizeof (float) * 3);
+  memcpy (c, tmp_poly + n_vertices, sizeof (float) * 3);
+  cogl_vector3_subtract (b, b, plane->v0);
+  cogl_vector3_subtract (c, c, plane->v0);
+  cogl_vector3_cross_product (plane->n, b, c);
+  cogl_vector3_normalize (plane->n);
 }
 
 static void