diff options
Diffstat (limited to 'source/blender/render/intern/raytrace/rayobject_instance.cpp')
| -rw-r--r-- | source/blender/render/intern/raytrace/rayobject_instance.cpp | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/source/blender/render/intern/raytrace/rayobject_instance.cpp b/source/blender/render/intern/raytrace/rayobject_instance.cpp deleted file mode 100644 index 349f0fc6844..00000000000 --- a/source/blender/render/intern/raytrace/rayobject_instance.cpp +++ /dev/null @@ -1,211 +0,0 @@ -/* - * ***** 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. - * - * The Original Code is Copyright (C) 2009 Blender Foundation. - * All rights reserved. - * - * The Original Code is: all of this file. - * - * Contributor(s): André Pinto. - * - * ***** END GPL LICENSE BLOCK ***** - */ - -/** \file blender/render/intern/raytrace/rayobject_instance.cpp - * \ingroup render - */ - - -#include <assert.h> - -#include "MEM_guardedalloc.h" - -#include "BLI_math.h" -#include "BLI_utildefines.h" - -#include "rayintersection.h" -#include "rayobject.h" - -#define RE_COST_INSTANCE (1.0f) - -static int RE_rayobject_instance_intersect(RayObject *o, Isect *isec); -static void RE_rayobject_instance_free(RayObject *o); -static void RE_rayobject_instance_bb(RayObject *o, float *min, float *max); -static float RE_rayobject_instance_cost(RayObject *o); - -static void RE_rayobject_instance_hint_bb(RayObject *UNUSED(o), RayHint *UNUSED(hint), - float *UNUSED(min), float *UNUSED(max)) -{} - -static RayObjectAPI instance_api = -{ - RE_rayobject_instance_intersect, - NULL, //static void RE_rayobject_instance_add(RayObject *o, RayObject *ob); - NULL, //static void RE_rayobject_instance_done(RayObject *o); - RE_rayobject_instance_free, - RE_rayobject_instance_bb, - RE_rayobject_instance_cost, - RE_rayobject_instance_hint_bb -}; - -typedef struct InstanceRayObject { - RayObject rayobj; - RayObject *target; - - void *ob; //Object represented by this instance - void *target_ob; //Object represented by the inner RayObject, needed to handle self-intersection - - float global2target[4][4]; - float target2global[4][4]; - -} InstanceRayObject; - - -RayObject *RE_rayobject_instance_create(RayObject *target, float transform[4][4], void *ob, void *target_ob) -{ - InstanceRayObject *obj = (InstanceRayObject *)MEM_callocN(sizeof(InstanceRayObject), "InstanceRayObject"); - assert(RE_rayobject_isAligned(obj) ); /* RayObject API assumes real data to be 4-byte aligned */ - - obj->rayobj.api = &instance_api; - obj->target = target; - obj->ob = ob; - obj->target_ob = target_ob; - - copy_m4_m4(obj->target2global, transform); - invert_m4_m4(obj->global2target, obj->target2global); - - return RE_rayobject_unalignRayAPI((RayObject *) obj); -} - -static int RE_rayobject_instance_intersect(RayObject *o, Isect *isec) -{ - InstanceRayObject *obj = (InstanceRayObject *)o; - float start[3], dir[3], idot_axis[3], dist; - int changed = 0, i, res; - - // TODO - this is disabling self intersection on instances - if (isec->orig.ob == obj->ob && obj->ob) { - changed = 1; - isec->orig.ob = obj->target_ob; - } - - // backup old values - copy_v3_v3(start, isec->start); - copy_v3_v3(dir, isec->dir); - copy_v3_v3(idot_axis, isec->idot_axis); - dist = isec->dist; - - // transform to target coordinates system - mul_m4_v3(obj->global2target, isec->start); - mul_mat3_m4_v3(obj->global2target, isec->dir); - isec->dist *= normalize_v3(isec->dir); - - // update idot_axis and bv_index - for (i = 0; i < 3; i++) { - isec->idot_axis[i] = 1.0f / isec->dir[i]; - - isec->bv_index[2 * i] = isec->idot_axis[i] < 0.0f ? 1 : 0; - isec->bv_index[2 * i + 1] = 1 - isec->bv_index[2 * i]; - - isec->bv_index[2 * i] = i + 3 * isec->bv_index[2 * i]; - isec->bv_index[2 * i + 1] = i + 3 * isec->bv_index[2 * i + 1]; - } - - // Pre-calculate orientation for watertight intersection checks. - isect_ray_tri_watertight_v3_precalc(&isec->isect_precalc, isec->dir); - - // raycast - res = RE_rayobject_intersect(obj->target, isec); - - // map dist into original coordinate space - if (res == 0) { - isec->dist = dist; - } - else { - // note we don't just multiply dist, because of possible - // non-uniform scaling in the transform matrix - float vec[3]; - - mul_v3_v3fl(vec, isec->dir, isec->dist); - mul_mat3_m4_v3(obj->target2global, vec); - - isec->dist = len_v3(vec); - isec->hit.ob = obj->ob; - -#ifdef RT_USE_LAST_HIT - // TODO support for last hit optimization in instances that can jump - // directly to the last hit face. - // For now it jumps directly to the last-hit instance root node. - isec->last_hit = RE_rayobject_unalignRayAPI((RayObject *) obj); -#endif - } - - // restore values - copy_v3_v3(isec->start, start); - copy_v3_v3(isec->dir, dir); - copy_v3_v3(isec->idot_axis, idot_axis); - - if (changed) - isec->orig.ob = obj->ob; - - // restore bv_index - for (i = 0; i < 3; i++) { - isec->bv_index[2 * i] = isec->idot_axis[i] < 0.0f ? 1 : 0; - isec->bv_index[2 * i + 1] = 1 - isec->bv_index[2 * i]; - - isec->bv_index[2 * i] = i + 3 * isec->bv_index[2 * i]; - isec->bv_index[2 * i + 1] = i + 3 * isec->bv_index[2 * i + 1]; - } - - // Pre-calculate orientation for watertight intersection checks. - isect_ray_tri_watertight_v3_precalc(&isec->isect_precalc, isec->dir); - - return res; -} - -static void RE_rayobject_instance_free(RayObject *o) -{ - InstanceRayObject *obj = (InstanceRayObject *)o; - MEM_freeN(obj); -} - -static float RE_rayobject_instance_cost(RayObject *o) -{ - InstanceRayObject *obj = (InstanceRayObject *)o; - return RE_rayobject_cost(obj->target) + RE_COST_INSTANCE; -} - -static void RE_rayobject_instance_bb(RayObject *o, float *min, float *max) -{ - //TODO: - // *better bb.. calculated without rotations of bb - // *maybe cache that better-fitted-BB at the InstanceRayObject - InstanceRayObject *obj = (InstanceRayObject *)o; - - float m[3], M[3], t[3]; - int i, j; - INIT_MINMAX(m, M); - RE_rayobject_merge_bb(obj->target, m, M); - - //There must be a faster way than rotating all the 8 vertexs of the BB - for (i = 0; i < 8; i++) { - for (j = 0; j < 3; j++) t[j] = (i & (1 << j)) ? M[j] : m[j]; - mul_m4_v3(obj->target2global, t); - DO_MINMAX(t, min, max); - } -} - |