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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __CAMERA_H__
#define __CAMERA_H__
#include "kernel/types.h"
#include "graph/node.h"
#include "util/array.h"
#include "util/boundbox.h"
#include "util/projection.h"
#include "util/transform.h"
#include "util/types.h"
CCL_NAMESPACE_BEGIN
class Device;
class DeviceScene;
class Scene;
/* Camera
*
* The camera parameters are quite standard, tested to be both compatible with
* Renderman, and Blender after remapping.
*/
class Camera : public Node {
public:
NODE_DECLARE
/* Specifies an offset for the shutter's time interval. */
enum MotionPosition {
/* Shutter opens at the current frame. */
MOTION_POSITION_START = 0,
/* Shutter is fully open at the current frame. */
MOTION_POSITION_CENTER = 1,
/* Shutter closes at the current frame. */
MOTION_POSITION_END = 2,
MOTION_NUM_POSITIONS,
};
/* Specifies rolling shutter effect. */
enum RollingShutterType {
/* No rolling shutter effect. */
ROLLING_SHUTTER_NONE = 0,
/* Sensor is being scanned vertically from top to bottom. */
ROLLING_SHUTTER_TOP = 1,
ROLLING_SHUTTER_NUM_TYPES,
};
/* Stereo Type */
enum StereoEye {
STEREO_NONE,
STEREO_LEFT,
STEREO_RIGHT,
};
/* motion blur */
NODE_SOCKET_API(float, shuttertime)
NODE_SOCKET_API(MotionPosition, motion_position)
NODE_SOCKET_API_ARRAY(array<float>, shutter_curve)
size_t shutter_table_offset;
/* ** Rolling shutter effect. ** */
/* Defines rolling shutter effect type. */
NODE_SOCKET_API(RollingShutterType, rolling_shutter_type)
/* Specifies exposure time of scan-lines when using
* rolling shutter effect.
*/
NODE_SOCKET_API(float, rolling_shutter_duration)
/* depth of field */
NODE_SOCKET_API(float, focaldistance)
NODE_SOCKET_API(float, aperturesize)
NODE_SOCKET_API(uint, blades)
NODE_SOCKET_API(float, bladesrotation)
/* type */
NODE_SOCKET_API(CameraType, camera_type)
NODE_SOCKET_API(float, fov)
/* panorama */
NODE_SOCKET_API(PanoramaType, panorama_type)
NODE_SOCKET_API(float, fisheye_fov)
NODE_SOCKET_API(float, fisheye_lens)
NODE_SOCKET_API(float, latitude_min)
NODE_SOCKET_API(float, latitude_max)
NODE_SOCKET_API(float, longitude_min)
NODE_SOCKET_API(float, longitude_max)
NODE_SOCKET_API(float, fisheye_polynomial_k0)
NODE_SOCKET_API(float, fisheye_polynomial_k1)
NODE_SOCKET_API(float, fisheye_polynomial_k2)
NODE_SOCKET_API(float, fisheye_polynomial_k3)
NODE_SOCKET_API(float, fisheye_polynomial_k4)
/* panorama stereo */
NODE_SOCKET_API(StereoEye, stereo_eye)
NODE_SOCKET_API(bool, use_spherical_stereo)
NODE_SOCKET_API(float, interocular_distance)
NODE_SOCKET_API(float, convergence_distance)
NODE_SOCKET_API(bool, use_pole_merge)
NODE_SOCKET_API(float, pole_merge_angle_from)
NODE_SOCKET_API(float, pole_merge_angle_to)
/* anamorphic lens bokeh */
NODE_SOCKET_API(float, aperture_ratio)
/* sensor */
NODE_SOCKET_API(float, sensorwidth)
NODE_SOCKET_API(float, sensorheight)
/* clipping */
NODE_SOCKET_API(float, nearclip)
NODE_SOCKET_API(float, farclip)
/* screen */
BoundBox2D viewplane;
NODE_SOCKET_API_STRUCT_MEMBER(float, viewplane, left)
NODE_SOCKET_API_STRUCT_MEMBER(float, viewplane, right)
NODE_SOCKET_API_STRUCT_MEMBER(float, viewplane, bottom)
NODE_SOCKET_API_STRUCT_MEMBER(float, viewplane, top)
/* width and height change during preview, so we need these for calculating dice rates. */
NODE_SOCKET_API(int, full_width)
NODE_SOCKET_API(int, full_height)
/* controls how fast the dicing rate falls off for geometry out side of view */
NODE_SOCKET_API(float, offscreen_dicing_scale)
/* border */
BoundBox2D border;
NODE_SOCKET_API_STRUCT_MEMBER(float, border, left)
NODE_SOCKET_API_STRUCT_MEMBER(float, border, right)
NODE_SOCKET_API_STRUCT_MEMBER(float, border, bottom)
NODE_SOCKET_API_STRUCT_MEMBER(float, border, top)
BoundBox2D viewport_camera_border;
NODE_SOCKET_API_STRUCT_MEMBER(float, viewport_camera_border, left)
NODE_SOCKET_API_STRUCT_MEMBER(float, viewport_camera_border, right)
NODE_SOCKET_API_STRUCT_MEMBER(float, viewport_camera_border, bottom)
NODE_SOCKET_API_STRUCT_MEMBER(float, viewport_camera_border, top)
/* transformation */
NODE_SOCKET_API(Transform, matrix)
/* motion */
NODE_SOCKET_API_ARRAY(array<Transform>, motion)
NODE_SOCKET_API(bool, use_perspective_motion)
NODE_SOCKET_API(float, fov_pre)
NODE_SOCKET_API(float, fov_post)
/* computed camera parameters */
ProjectionTransform screentoworld;
ProjectionTransform rastertoworld;
ProjectionTransform ndctoworld;
Transform cameratoworld;
ProjectionTransform worldtoraster;
ProjectionTransform worldtoscreen;
ProjectionTransform worldtondc;
Transform worldtocamera;
ProjectionTransform rastertocamera;
ProjectionTransform cameratoraster;
ProjectionTransform full_rastertocamera;
float3 dx;
float3 dy;
float3 full_dx;
float3 full_dy;
float3 frustum_right_normal;
float3 frustum_top_normal;
float3 frustum_left_normal;
float3 frustum_bottom_normal;
/* update */
bool need_device_update;
bool need_flags_update;
int previous_need_motion;
/* Kernel camera data, copied here for dicing. */
KernelCamera kernel_camera;
array<DecomposedTransform> kernel_camera_motion;
private:
int width;
int height;
public:
/* functions */
Camera();
~Camera();
void compute_auto_viewplane();
void update(Scene *scene);
void device_update(Device *device, DeviceScene *dscene, Scene *scene);
void device_update_volume(Device *device, DeviceScene *dscene, Scene *scene);
void device_free(Device *device, DeviceScene *dscene, Scene *scene);
/* Public utility functions. */
BoundBox viewplane_bounds_get();
/* Calculates the width of a pixel at point in world space. */
float world_to_raster_size(float3 P);
/* Motion blur. */
float motion_time(int step) const;
int motion_step(float time) const;
bool use_motion() const;
void set_screen_size(int width_, int height_);
private:
/* Private utility functions. */
float3 transform_raster_to_world(float raster_x, float raster_y);
};
CCL_NAMESPACE_END
#endif /* __CAMERA_H__ */
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