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#ifndef gra_WatchBall_H__
#define gra_WatchBall_H__
#include "Camera.h"
#include "../Self.h"
#include "../geo/Vectors.h"
#include "../math/LinearTransformations.h"
#include "../oo/ObjBase.h"
#include <cmath>
#include <vector>
namespace meow {
/*!
* @brief \b 多個camera, 一個offset, 一個rotation
*
* @author cat_leopard
*/
template<class Pixel>
class WatchBall: public ObjBase {
public:
typedef std::vector<Camera<Pixel> > Cameras;
private:
struct Myself {
Cameras cameras_;
Vector3D<double> offset_;
Myself() {
}
~Myself() {
}
Myself& copyFrom(Myself const& b) {
cameras_ = b.cameras_;
offset_ = b. offset_;
return *this;
}
};
Self<Myself> const self;
public:
/*!
* @brief constructor
*/
WatchBall(): self(true) {
}
/*!
* @brief copy constructor
*/
WatchBall(WatchBall const& b): self(false) {
copyFrom(b);
}
/*!
* @brief destructor
*/
~WatchBall() {
}
/*!
* @brief copy data
*/
WatchBall& copyFrom(WatchBall const& b) {
self().copyFrom(b.self);
return *this;
}
/*!
* @brief reference
*/
WatchBall& referenceFrom(WatchBall const& b) {
self().referenceFrom(b.self);
return *this;
}
/*!
* @brief 取得有幾個camera
*/
size_t cameraSize() const {
return self->cameras_.size();
}
/*!
* @brief 取得 cameras
*/
Cameras const& cameras() const {
return self->cameras_;
}
/*!
* @brief 取得 cameras (non-constant)
*/
Cameras& camerasGet() {
return self()->cameras_;
}
/*!
* @brief 設定 camera
*/
Cameras const& cameras(Cameras const& c) {
self()->cameras_ = c;
return cameras();
}
/*!
* @brief 取得第i個camera
*/
Camera<Pixel> const& camera(size_t i) const {
return cameras()[i];
}
/*!
* @brief 取得第i個camera (non-constant reference)
*/
Camera<Pixel>& camera(size_t i) {
return cameras()[i];
}
/*!
* @brief 設定第i個camera
*/
Camera<Pixel> const& camera(size_t i, Camera<Pixel> const& c) {
cameras()[i] = c;
return camera(i);
}
/*!
* @brief 取得offset
*/
Vector3D<double> const& offset() const {
return self->offset_;
}
/*!
* @brief 取得offset (non-constant reference)
*/
Vector3D<double>& offset() {
return self()->offset_;
}
/*!
* @brief 設定offset
*/
Vector3D<double> const& offset(Vector3D<double> const& ofs) {
self()->offset_ = ofs;
return offset();
}
/*!
* @brief 取得底片color
*/
Pixel color(Vector3D<double> p) const {
Vector3D<double> p2(p - offset());
Pixel sum(0);
double ct = 0;
for (size_t i = 0, I = cameraSize(); i < I; ++i) {
if (camera(i).inside(p2)) {
sum = sum + camera(i).color(p2);
++ct;
}
}
return (ct > 0 ? sum / ct : sum);
}
/*!
* @brief 輸出展開圖
*
* @param [in] radius 半徑
*/
Bitmap<Pixel> expand(double radius) const {
radius = std::max(radius, 0.5);
size_t height = std::max<size_t>(1, 2.0 * radius);
size_t width = 2.0* PI * radius;
Bitmap<Pixel> ret(height, width, Pixel(0));
for (size_t i = 0; i < height; ++i) {
for (size_t j = 0; j < width; ++j) {
double theta = (1.0 * j / width - 0.5) * 2 * PI;
double phi = asin(-(1.0 * i / height - 0.5) * 2.0);
ret.pixel(i, j, color(Vector3D<double>(
sin(-theta) * cos(phi),
sin(phi),
cos(-theta) * cos(phi)
)));
}
}
return ret;
}
/*!
* @brief same as \c copyFrom(b)
*/
WatchBall& operator=(WatchBall const& b) {
return copyFrom(b);
}
/*! @brief 將資料寫入檔案
*
* @note 未完成
*/
bool write(FILE* f, bool bin, unsigned int fg) const {
return false;
}
/*! @brief 將資料讀入
*
* @note 未完成
*/
bool read(FILE* f, bool bin, unsigned int fg) {
return false;
}
/*! @brief new一個自己
*
* @return 一個new出來的pointer
*/
ObjBase* create() const {
return new WatchBall();
}
/*!
* @brief 複製資料
*
* 輸入型別是 \c ObjBase \c const*
* 事實上這個method就只是幫忙轉型然後呼叫原本的\c copyFrom
*
* @param [in] b 資料來源
* @return this
*/
ObjBase* copyFrom(ObjBase const* b) {
return &(copyFrom(*(WatchBall*)b));
}
/*! @brief 回傳class的type
*
* @return \c char \c const\c * 形式的typename
*/
char const* ctype() const{
static char const* ptr = typeid(*this).name();
return ptr;
}
/*! @brief 回傳class的type
*
* @return \c std::string 形式的typename
*/
std::string type() const {
return std::string(ctype());
}
};
}
#endif // gra_WatchBall_H__
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