//
// Created on 2026/3/6.
//
// Node APIs are not fully supported. To solve the compilation error of the interface cannot be found,
// please include "napi/native_api.h".

#include "Camera.h"

#ifndef NATIVE_TAG
#define NATIVE_TAG "CAMERA"
#endif

namespace NativeOpenCAX {

Camera::Camera() : camera(nullptr) {}
Camera::~Camera() {}
bool Camera::InitCamera(Handle(V3d_View)& view) {
    try {
        camera = new Graphic3d_Camera;
        // 将角度转换为弧度并计算对应的缩放因子
        camera->SetFOVy(45.0);
        camera->SetZRange(1, 10.0);
        view->SetCamera(camera);
        HILOG_ERROR(NATIVE_TAG,"Camera Scale:%{public}f",camera->Scale());
        HILOG_INFO(NATIVE_TAG, "InitCamera Done");
        return true;
    } catch (std::exception &e) {
        HILOG_INFO(NATIVE_TAG, "InitCamera Fail:%{public}d", e.what());
        return false;
    }
}
void Camera::SetRotation(float xAngle, float yAngle) {
    gp_Pnt currentEye = camera->Eye();
    gp_Pnt currentCenter = camera->Center();
    gp_Dir currentUp = camera->Up();

    // 计算当前的视线方向和距离
    gp_Vec viewDir = currentCenter.XYZ() - currentEye.XYZ();
    double distance = viewDir.Magnitude();
    gp_Pnt rotationCenter = currentCenter; // 旋转中心设为当前目标点

    // 创建旋转增量
    gp_Quaternion rotX, rotY;
    // 从 gp_Ax1 中提取方向向量 (gp_Dir -> gp_Vec)
    gp_Vec xRotationAxis = camera->Direction().XYZ().Crossed(currentUp.XYZ()); // 叉积得到X旋转轴
    if (xRotationAxis.Magnitude() > gp::Resolution()) { // 防止零向量导致的无效四元数
        rotX.SetVectorAndAngle(xRotationAxis, xAngle * M_PI / 180.0);
    } else {
       rotX.SetIdent(); // 如果叉积为零，则无旋转
    }
    // 从 gp_Ax1 中提取方向向量 (gp_Dir -> gp_Vec)
    gp_Vec yRotationAxis = currentUp.XYZ(); // Y旋转轴就是当前的Up方向
    if (yRotationAxis.Magnitude() > gp::Resolution()) {
       rotY.SetVectorAndAngle(yRotationAxis, yAngle * M_PI / 180.0);
     } else {
       rotY.SetIdent(); // 如果Up向量无效，则无旋转
     }
    // 组合旋转
    gp_Quaternion totalRotation = rotY * rotX;

    // 应用旋转到眼睛位置
    gp_Vec newViewDir = totalRotation * viewDir.Normalized();
    gp_Pnt newEye = rotationCenter.XYZ() - newViewDir.XYZ() * distance;

    // 计算新的 Up 方向
    gp_Dir newUp = totalRotation * currentUp;

    // 设置新相机参数
    camera->SetEye(newEye);
    camera->SetCenter(rotationCenter);
    camera->SetUp(newUp);
    HILOG_ERROR(NATIVE_TAG,"Rotation");
}


} // namespace NativeOpenCAX