rna function:

  vecs = Camera.view_frame(scene)

returns 4 points for the camera frame, without this its very hard to know if a point is in the camera view or not, without rewriting blenders internal logic in python.

1 files changed, 88 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_camera_api.c b/source/blender/makesrna/intern/rna_camera_api.c
new file mode 100644
index 00000000000..9e92527aef7
--- /dev/null
+++ b/source/blender/makesrna/intern/rna_camera_api.c
@@ -0,0 +1,88 @@
+/*
+ * $Id:
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version. 
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor(s): Campbell Barton
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/makesrna/intern/rna_camera_api.c
+ *  \ingroup RNA
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+
+#include "RNA_define.h"
+#include "BKE_utildefines.h"
+
+#ifdef RNA_RUNTIME
+
+#include "DNA_scene_types.h"
+#include "BKE_context.h"
+#include "BKE_object.h"
+
+void rna_camera_view_frame(struct Camera *camera, struct Scene *scene,
+                           float vec1_r[3], float vec2_r[3], float vec3_r[3], float vec4_r[3])
+{
+	float vec[4][3];
+
+	camera_view_frame(scene, camera, vec);
+
+	copy_v3_v3(vec1_r, vec[0]);
+	copy_v3_v3(vec2_r, vec[1]);
+	copy_v3_v3(vec3_r, vec[2]);
+	copy_v3_v3(vec4_r, vec[3]);
+}
+
+#else
+
+void RNA_api_camera(StructRNA *srna)
+{
+	FunctionRNA *func;
+	PropertyRNA *parm;
+
+	func= RNA_def_function(srna, "view_frame", "rna_camera_view_frame");
+	RNA_def_function_ui_description(func, "Return 4 points for the cameras frame (before object transformation)");
+
+	RNA_def_pointer(func, "scene", "Scene", "", "Scene to use for aspect calculation, when omitted 1:1 aspect is used");
+
+	/* return location and normal */
+	parm= RNA_def_float_vector(func, "result_1", 3, NULL, -FLT_MAX, FLT_MAX, "Result", NULL, -1e4, 1e4);
+	RNA_def_property_flag(parm, PROP_THICK_WRAP);
+	RNA_def_function_output(func, parm);
+
+	parm= RNA_def_float_vector(func, "result_2", 3, NULL, -FLT_MAX, FLT_MAX, "Result", NULL, -1e4, 1e4);
+	RNA_def_property_flag(parm, PROP_THICK_WRAP);
+	RNA_def_function_output(func, parm);
+
+	parm= RNA_def_float_vector(func, "result_3", 3, NULL, -FLT_MAX, FLT_MAX, "Result", NULL, -1e4, 1e4);
+	RNA_def_property_flag(parm, PROP_THICK_WRAP);
+	RNA_def_function_output(func, parm);
+
+	parm= RNA_def_float_vector(func, "result_4", 3, NULL, -FLT_MAX, FLT_MAX, "Result", NULL, -1e4, 1e4);
+	RNA_def_property_flag(parm, PROP_THICK_WRAP);
+	RNA_def_function_output(func, parm);
+}
+
+#endif
+