77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
//
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// Created on 2026/3/6.
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//
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// Node APIs are not fully supported. To solve the compilation error of the interface cannot be found,
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// please include "napi/native_api.h".
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#include "Camera.h"
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#ifndef NATIVE_TAG
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#define NATIVE_TAG "CAMERA"
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#endif
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namespace NativeOpenCAX {
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Camera::Camera() : camera(nullptr) {}
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Camera::~Camera() {}
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bool Camera::InitCamera(Handle(V3d_View)& view) {
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try {
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camera = new Graphic3d_Camera;
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// 将角度转换为弧度并计算对应的缩放因子
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camera->SetFOVy(45.0);
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camera->SetZRange(1, 10.0);
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view->SetCamera(camera);
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HILOG_ERROR(NATIVE_TAG,"Camera Scale:%{public}f",camera->Scale());
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HILOG_INFO(NATIVE_TAG, "InitCamera Done");
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return true;
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} catch (std::exception &e) {
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HILOG_INFO(NATIVE_TAG, "InitCamera Fail:%{public}d", e.what());
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return false;
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}
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}
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void Camera::SetRotation(float xAngle, float yAngle) {
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gp_Pnt currentEye = camera->Eye();
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gp_Pnt currentCenter = camera->Center();
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gp_Dir currentUp = camera->Up();
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// 计算当前的视线方向和距离
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gp_Vec viewDir = currentCenter.XYZ() - currentEye.XYZ();
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double distance = viewDir.Magnitude();
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gp_Pnt rotationCenter = currentCenter; // 旋转中心设为当前目标点
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// 创建旋转增量
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gp_Quaternion rotX, rotY;
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// 从 gp_Ax1 中提取方向向量 (gp_Dir -> gp_Vec)
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gp_Vec xRotationAxis = camera->Direction().XYZ().Crossed(currentUp.XYZ()); // 叉积得到X旋转轴
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if (xRotationAxis.Magnitude() > gp::Resolution()) { // 防止零向量导致的无效四元数
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rotX.SetVectorAndAngle(xRotationAxis, xAngle * M_PI / 180.0);
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} else {
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rotX.SetIdent(); // 如果叉积为零，则无旋转
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}
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// 从 gp_Ax1 中提取方向向量 (gp_Dir -> gp_Vec)
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gp_Vec yRotationAxis = currentUp.XYZ(); // Y旋转轴就是当前的Up方向
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if (yRotationAxis.Magnitude() > gp::Resolution()) {
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rotY.SetVectorAndAngle(yRotationAxis, yAngle * M_PI / 180.0);
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} else {
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rotY.SetIdent(); // 如果Up向量无效，则无旋转
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}
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// 组合旋转
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gp_Quaternion totalRotation = rotY * rotX;
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// 应用旋转到眼睛位置
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gp_Vec newViewDir = totalRotation * viewDir.Normalized();
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gp_Pnt newEye = rotationCenter.XYZ() - newViewDir.XYZ() * distance;
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// 计算新的 Up 方向
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gp_Dir newUp = totalRotation * currentUp;
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// 设置新相机参数
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camera->SetEye(newEye);
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camera->SetCenter(rotationCenter);
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camera->SetUp(newUp);
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HILOG_ERROR(NATIVE_TAG,"Rotation");
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}
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} // namespace NativeOpenCAX
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