ai_cameras.h

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// Copyright 2021 Autodesk, Inc.  All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk license
// agreement provided at the time of installation or download, or which
// otherwise accompanies this software in either electronic or hard copy form.
 
#pragma once
#include "ai_nodes.h"
#include "ai_vector.h"
 
struct AtCameraInput {
   float sx, sy;                     
   float dsx, dsy;                   
   float lensx, lensy;               
   float relative_time;              
};
 
struct AtCameraOutput {
   AtVector origin;                  
   AtVector dir;                     
   AtVector dOdx, dOdy;              
   AtVector dDdx, dDdy;              
   AtRGB    weight;                  
};
 
struct AtCameraNodeMethods {
   void (*CreateRay)(const AtNode*, const AtCameraInput&, AtCameraOutput&, uint16_t tid);
   bool (*ReverseRay)(const AtNode* node, const AtVector &Po, float relative_time, AtVector2 &Ps);
};
 
#define AI_CAMERA_NODE_EXPORT_METHODS(tag)   \
AI_INSTANCE_COMMON_METHODS                   \
camera_create_ray;                           \
camera_reverse_ray;                          \
static AtCameraNodeMethods ai_cam_mtds = {   \
   CameraCreateRay,                          \
   CameraReverseRay                          \
};                                           \
static AtNodeMethods ai_node_mtds = {        \
   &ai_common_mtds,                          \
   &ai_cam_mtds                              \
};                                           \
const AtNodeMethods* tag = &ai_node_mtds;
 
 
AI_API void AiCameraInitialize(AtNode* node);
AI_API void AiCameraUpdate(AtNode* node, bool plane_distance);
/*\}*/
 
#define camera_create_ray \
static void CameraCreateRay(const AtNode* node, const AtCameraInput& input, AtCameraOutput& output, uint16_t tid)
 
#define camera_reverse_ray \
static bool CameraReverseRay(const AtNode* node, const AtVector &Po, float relative_time, AtVector2 &Ps)
 
/* \}*/
 
/*\}*/