This example imports a partial scene containing definitions for the camera, a light, and some geometry (a ground plane and a yellow cube). It then creates via the API a subdivision surface and three instances of it with different approximation levels.
#include "example_shared.h"
#include "example_render_target_simple.h"
#include <iostream>
{
{ 0, 1, 5, 4 },
{ 4, 5, 6, 7 },
{ 7, 6, 2, 3 },
{ 3, 2, 1, 0 },
{ 1, 2, 6, 5 },
{ 3, 0, 4, 7 } };
mi::Float32 crease_values[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
return mesh;
}
{
group->detach( "cube_instance");
group = 0;
transaction->
store( mesh.get(),
"mesh");
const char* names[3] = { "instance0", "instance1", "instance2" };
const char* materials[3] = { "red_material", "green_material", "blue_material" };
mi::Float32 approximation_level[3] = { 0.0f, 1.0f, 2.0f };
};
instance->attach( "mesh");
matrix.translate( translation[i]);
matrix.rotate( 0.0, 0.25 *
MI_PI_2, 0.0);
instance->set_matrix( matrix);
instance->create_attribute<
mi::IBoolean>(
"visible",
"Boolean"));
visible->set_value( true);
instance->create_attribute<
mi::IRef>(
"material",
"Ref"));
material->set_reference( materials[i]);
method->set_value( 0);
const_u->set_value( approximation_level[i]);
transaction->
store( instance.get(), names[i]);
group->attach( names[i]);
}
}
{
check_success( rc->add_mdl_path( mdl_path) == 0);
check_success( rc->add_mdl_path( ".") == 0);
}
{
check_success( database.is_valid_interface());
database->get_global_scope());
scope->create_transaction());
check_success( transaction.is_valid_interface());
check_success( import_api.is_valid_interface());
import_api->import_elements( transaction.get(), "file:main.mi"));
check_success( import_result->get_error_number() == 0);
setup_scene( transaction.get(), import_result->get_rootgroup());
scene->set_rootgroup( import_result->get_rootgroup());
scene->set_options( import_result->get_options());
scene->set_camera_instance( import_result->get_camera_inst());
transaction->
store( scene.get(),
"the_scene");
scene->create_render_context( transaction.get(), "iray"));
check_success( render_context.is_valid_interface());
scheduler_mode->set_c_str( "batch");
render_context->set_option( "scheduler_mode", scheduler_mode.get());
scene = 0;
new Render_target( image_api.get(), "Color", 512, 384));
check_success( render_context->render( transaction.get(), render_target.get(), 0) >= 0);
check_success( export_api.is_valid_interface());
export_api->export_canvas( "file:example_subdivision_surface.png", canvas.get());
}
int main( int argc, char* argv[])
{
if( argc != 2) {
std::cerr << "Usage: example_subdivision_surface <mdl_path>" << std::endl;
keep_console_open();
return EXIT_FAILURE;
}
const char* mdl_path = argv[1];
check_success( neuray.is_valid_interface());
configuration( neuray.get(), mdl_path);
check_start_success( result);
rendering( neuray.get());
check_success( neuray->
shutdown() == 0);
neuray = 0;
check_success( unload());
keep_console_open();
return EXIT_SUCCESS;
}
This interface represents bool.
Definition: inumber.h:122
This interface represents mi::Float32.
Definition: inumber.h:221
A reference is an object that acts as a pointer to other database elements.
Definition: iref.h:25
This interface represents mi::Sint8.
Definition: inumber.h:177
A simple string class.
Definition: istring.h:22
This interface represents structures, i.e., a key-value based data structure.
Definition: istructure.h:44
Handle class template for interfaces, automatizing the lifetime control via reference counting.
Definition: handle.h:113
NxM-dimensional matrix class template of fixed dimensions.
Definition: matrix.h:367
Fixed-size math vector class template with generic operations.
Definition: vector.h:286
This interface is used to interact with the distributed database.
Definition: idatabase.h:293
This interface is used to export files.
Definition: iexport_api.h:38
A group is a container for other scene elements.
Definition: igroup.h:39
This interface provides various utilities related to canvases and buffers.
Definition: iimage_api.h:49
This interface is used to import files.
Definition: iimport_api.h:100
An instance is a scene element that adds a transformation and attributes to another scene element.
Definition: iinstance.h:117
This is an object representing the Iray library.
Definition: ineuray.h:44
virtual Sint32 shutdown(bool blocking=true)=0
Shuts down the library.
virtual base::IInterface * get_api_component(const base::Uuid &uuid) const =0
Returns an API component from the Iray SDK API.
virtual Sint32 start(bool blocking=true)=0
Starts the operation of the Iray library.
This interface is used to load plugins and to query information about loaded plugins.
Definition: iplugin_configuration.h:24
virtual Uint32 append_point(const Float32_3_struct &p)=0
Adds a point p to the end of all points and returns the index of the new point.
virtual Polygon_handle_struct add_polygon(Uint32 num_vertices, bool hole=false)=0
Adds a polygon to the mesh.
virtual Sint32 attach_mesh_connectivity(IPolygon_connectivity *connectivity)=0
Attaches the mesh connectivity to the mesh.
virtual IPolygon_connectivity * edit_mesh_connectivity()=0
Detaches and returns the mesh connectivity.
virtual void reserve_points(Uint32 n)=0
Reserves space for at least n points.
This interface is used to query and change the rendering configuration.
Definition: irendering_configuration.h:109
The scene is the top-level element describing a subset of DB elements to be rendered.
Definition: iscene.h:44
Interface representing a subdivision surface.
Definition: isubdivision_surface.h:58
virtual Sint32 set_crease_values(Polygon_handle_struct p, const Float32 *values)=0
Sets crease values for all edges of a polygon.
A transaction provides a consistent view on the database.
Definition: itransaction.h:81
virtual base::IInterface * create(const char *type_name, Uint32 argc=0, const base::IInterface *argv[]=0)=0
Creates an object of the type type_name.
virtual base::IInterface * edit(const char *name)=0
Retrieves an element from the database and returns it ready for editing.
virtual Sint32 commit()=0
Commits the transaction.
virtual Sint32 store(base::IInterface *db_element, const char *name, Uint8 privacy=LOCAL_SCOPE)=0
Stores the element db_element in the database under the name name and with the privacy level privacy.
Handle class for type-safety.
Definition: identifier.h:66
#define MI_BASE_DLL_FILE_EXT
The operating system specific default filename extension for shared libraries (DLLs)
Definition: config.h:340
unsigned int Uint32
32-bit unsigned integer.
Definition: types.h:49
#define MI_PI_2
Value of Pi / 2.
Definition: types.h:194
Uint64 Size
Unsigned integral type that is large enough to hold the size of all types.
Definition: types.h:112
float Float32
32-bit float.
Definition: types.h:51
signed int Sint32
32-bit signed integer.
Definition: types.h:46
math::Vector<Float32, 3> Float32_3
Vector of three Float32.
Definition: vector_typedefs.h:90