static float blender_camera_focal_distance(BL::RenderEngine b_engine, BL::Object b_ob, BL::Camera b_camera)
{
BL::Object b_dof_object = b_camera.dof_object();
if(!b_dof_object)
return b_camera.dof_distance();
/* for dof object, return distance along camera Z direction */
BL::Array<float, 16> b_ob_matrix;
b_engine.camera_model_matrix(b_ob, b_ob_matrix);
Transform obmat = get_transform(b_ob_matrix);
Transform dofmat = get_transform(b_dof_object.matrix_world());
float3 view_dir = normalize(transform_get_column(&obmat, 2));
float3 dof_dir = transform_get_column(&obmat, 3) - transform_get_column(&dofmat, 3);
return fabsf(dot(view_dir, dof_dir));
}
static float blender_camera_focal_distance(BL::Object b_ob, BL::Camera b_camera)
{
BL::Object b_dof_object = b_camera.dof_object();
if(!b_dof_object)
return b_camera.dof_distance();
/* for dof object, return distance along camera Z direction */
Transform obmat = transform_clear_scale(get_transform(b_ob.matrix_world()));
Transform dofmat = get_transform(b_dof_object.matrix_world());
Transform mat = transform_inverse(obmat) * dofmat;
return fabsf(transform_get_column(&mat, 3).z);
}
static float blender_camera_focal_distance(BL::RenderEngine b_engine, BL::Object b_ob, BL::Camera b_camera)
{
BL::Object b_dof_object = b_camera.dof_object();
if(!b_dof_object)
return b_camera.dof_distance();
/* for dof object, return distance along camera Z direction */
BL::Array<float, 16> b_ob_matrix;
b_engine.camera_model_matrix(b_ob, b_ob_matrix);
Transform obmat = get_transform(b_ob_matrix);
Transform dofmat = get_transform(b_dof_object.matrix_world());
Transform mat = transform_inverse(obmat) * dofmat;
return fabsf(transform_get_column(&mat, 3).z);
}
bool BlenderObjectCulling::test_distance(Scene *scene, float3 bb[8])
{
float3 camera_position = transform_get_column(&scene->camera->matrix, 3);
float3 bb_min = make_float3(FLT_MAX, FLT_MAX, FLT_MAX),
bb_max = make_float3(-FLT_MAX, -FLT_MAX, -FLT_MAX);
/* Find min & max points for x & y & z on bounding box */
for(int i = 0; i < 8; ++i) {
float3 p = bb[i];
bb_min = min(bb_min, p);
bb_max = max(bb_max, p);
}
float3 closest_point = max(min(bb_max,camera_position),bb_min);
return (len_squared(camera_position - closest_point) >
distance_cull_margin_ * distance_cull_margin_);
}
void BlenderSync::sync_light(BL::Object& b_parent,
int persistent_id[OBJECT_PERSISTENT_ID_SIZE],
BL::Object& b_ob,
BL::DupliObject& b_dupli_ob,
Transform& tfm,
bool *use_portal)
{
/* test if we need to sync */
Light *light;
ObjectKey key(b_parent, persistent_id, b_ob);
if(!light_map.sync(&light, b_ob, b_parent, key)) {
if(light->is_portal)
*use_portal = true;
return;
}
BL::Lamp b_lamp(b_ob.data());
/* type */
switch(b_lamp.type()) {
case BL::Lamp::type_POINT: {
BL::PointLamp b_point_lamp(b_lamp);
light->size = b_point_lamp.shadow_soft_size();
light->type = LIGHT_POINT;
break;
}
case BL::Lamp::type_SPOT: {
BL::SpotLamp b_spot_lamp(b_lamp);
light->size = b_spot_lamp.shadow_soft_size();
light->type = LIGHT_SPOT;
light->spot_angle = b_spot_lamp.spot_size();
light->spot_smooth = b_spot_lamp.spot_blend();
break;
}
case BL::Lamp::type_HEMI: {
light->type = LIGHT_DISTANT;
light->size = 0.0f;
break;
}
case BL::Lamp::type_SUN: {
BL::SunLamp b_sun_lamp(b_lamp);
light->size = b_sun_lamp.shadow_soft_size();
light->type = LIGHT_DISTANT;
break;
}
case BL::Lamp::type_AREA: {
BL::AreaLamp b_area_lamp(b_lamp);
light->size = 1.0f;
light->axisu = transform_get_column(&tfm, 0);
light->axisv = transform_get_column(&tfm, 1);
light->sizeu = b_area_lamp.size();
if(b_area_lamp.shape() == BL::AreaLamp::shape_RECTANGLE)
light->sizev = b_area_lamp.size_y();
else
light->sizev = light->sizeu;
light->type = LIGHT_AREA;
break;
}
}
/* location and (inverted!) direction */
light->co = transform_get_column(&tfm, 3);
light->dir = -transform_get_column(&tfm, 2);
light->tfm = tfm;
/* shader */
vector<Shader*> used_shaders;
find_shader(b_lamp, used_shaders, scene->default_light);
light->shader = used_shaders[0];
/* shadow */
PointerRNA cscene = RNA_pointer_get(&b_scene.ptr, "cycles");
PointerRNA clamp = RNA_pointer_get(&b_lamp.ptr, "cycles");
light->cast_shadow = get_boolean(clamp, "cast_shadow");
light->use_mis = get_boolean(clamp, "use_multiple_importance_sampling");
int samples = get_int(clamp, "samples");
if(get_boolean(cscene, "use_square_samples"))
light->samples = samples * samples;
else
light->samples = samples;
light->max_bounces = get_int(clamp, "max_bounces");
if(b_dupli_ob) {
light->random_id = b_dupli_ob.random_id();
}
else {
light->random_id = hash_int_2d(hash_string(b_ob.name().c_str()), 0);
}
if(light->type == LIGHT_AREA)
light->is_portal = get_boolean(clamp, "is_portal");
else
light->is_portal = false;
if(light->is_portal)
*use_portal = true;
/* visibility */
uint visibility = object_ray_visibility(b_ob);
light->use_diffuse = (visibility & PATH_RAY_DIFFUSE) != 0;
light->use_glossy = (visibility & PATH_RAY_GLOSSY) != 0;
light->use_transmission = (visibility & PATH_RAY_TRANSMIT) != 0;
light->use_scatter = (visibility & PATH_RAY_VOLUME_SCATTER) != 0;
/* tag */
light->tag_update(scene);
}
void BlenderSync::sync_light(BL::Object b_parent, int persistent_id[OBJECT_PERSISTENT_ID_SIZE], BL::Object b_ob, Transform& tfm)
{
/* test if we need to sync */
Light *light;
ObjectKey key(b_parent, persistent_id, b_ob);
if(!light_map.sync(&light, b_ob, b_parent, key))
return;
BL::Lamp b_lamp(b_ob.data());
/* type */
switch(b_lamp.type()) {
case BL::Lamp::type_POINT: {
BL::PointLamp b_point_lamp(b_lamp);
light->size = b_point_lamp.shadow_soft_size();
light->type = LIGHT_POINT;
break;
}
case BL::Lamp::type_SPOT: {
BL::SpotLamp b_spot_lamp(b_lamp);
light->size = b_spot_lamp.shadow_soft_size();
light->type = LIGHT_SPOT;
light->spot_angle = b_spot_lamp.spot_size();
light->spot_smooth = b_spot_lamp.spot_blend();
break;
}
case BL::Lamp::type_HEMI: {
light->type = LIGHT_DISTANT;
light->size = 0.0f;
break;
}
case BL::Lamp::type_SUN: {
BL::SunLamp b_sun_lamp(b_lamp);
light->size = b_sun_lamp.shadow_soft_size();
light->type = LIGHT_DISTANT;
break;
}
case BL::Lamp::type_AREA: {
BL::AreaLamp b_area_lamp(b_lamp);
light->size = 1.0f;
light->axisu = transform_get_column(&tfm, 0);
light->axisv = transform_get_column(&tfm, 1);
light->sizeu = b_area_lamp.size();
if(b_area_lamp.shape() == BL::AreaLamp::shape_RECTANGLE)
light->sizev = b_area_lamp.size_y();
else
light->sizev = light->sizeu;
light->type = LIGHT_AREA;
break;
}
}
/* location and (inverted!) direction */
light->co = transform_get_column(&tfm, 3);
light->dir = -transform_get_column(&tfm, 2);
/* shader */
vector<uint> used_shaders;
find_shader(b_lamp, used_shaders, scene->default_light);
if(used_shaders.size() == 0)
used_shaders.push_back(scene->default_light);
light->shader = used_shaders[0];
/* shadow */
PointerRNA clamp = RNA_pointer_get(&b_lamp.ptr, "cycles");
light->cast_shadow = get_boolean(clamp, "cast_shadow");
light->use_mis = get_boolean(clamp, "use_multiple_importance_sampling");
light->samples = get_int(clamp, "samples");
/* tag */
light->tag_update(scene);
}
