OpenCAX/entry/src/main/cpp/NativeEGLOCCT/NativeRender.cpp

#include "NativeRender.h"
#include "Aspect_TypeOfLine.hxx"
#include "Font_FontAspect.hxx"
#include "STEPControl_Reader.hxx"

#ifndef NATIVE_TAG
#define NATIVE_TAG "NativeRender"
#endif

static std::mutex renderMutex;
namespace NativeOpenCAX {

NativeRender::NativeRender(int w, int h): 
width(0), 
height(0), 
v3dTri(new V3dTri),
v3dTriCube(new V3dTriCube), 
v3dcr(new V3dCa), 
v3dctx(new V3dCtx),
v3dogd(new V3dOGD),
v3dview(new V3dView), 
v3ddrawer(new V3dDrawer),
v3dviewer(new V3dViewer), 
v3dwin(new V3dWin) 
{
    width = w;
    height = h;
}

NativeRender::~NativeRender() { shapes_.clear(); }

bool NativeRender::init(EGLCore &_eglCore) {
    eglCore = _eglCore;
    //初始化OpenGL
    if (!v3dogd->InitV3dOGD(eglCore)) {
        HILOG_ERROR(NATIVE_TAG, "Init GraphicDriver Fail!");
        return false;
    }
    //初始化视口管理
    if (!v3dviewer->InitV3dViewer(v3dogd->graphicDriver)) {
        HILOG_ERROR(NATIVE_TAG, "Init Viewer Fail!");
        return false;
    }
    //初始化OCCT内部上下文
    if (!v3dctx->InitV3dCtx(v3dviewer->viewer)) {
        HILOG_ERROR(NATIVE_TAG, "Init Ctx Fail!");
        return false;
    }else{
       //初始化OCCT上下文的Drawer(全局属性设置)
       v3ddrawer->InitV3dAllAspect(v3dctx->ctx);
    }
    //初始化绑定Window
    if (!v3dwin->InitV3dWin(width, height)) {
        HILOG_ERROR(NATIVE_TAG, "Init Window Fail!");
        return false;
    }
    //初始化视图
    if (!v3dview->InitV3dView(v3dviewer->viewer,v3dwin->win)) {
        HILOG_ERROR(NATIVE_TAG, "Init View Fail!");
        return false;
    } else {
        v3dview->InitViewOption();
    }
    if (!v3dcr->InitV3dCa(v3dview->view)) {
        HILOG_ERROR(NATIVE_TAG, "Init Camera Fail!");
        return false;
    }
    //初始化世界坐标系
    if (!v3dTri->InitV3dTri(v3dctx->ctx)) {
        HILOG_ERROR(NATIVE_TAG, "Init AXIS Fail!");
        return false;
    }
    //初始化正方体视角切换指示器
    if (!v3dTriCube->InitV3dTriCube(v3dctx->ctx)) {
        HILOG_ERROR(NATIVE_TAG, "Init AXIS Cuba Fail!");
        return false;
    }
    //InitDevText();
    v3dview->ResetView();
    return true;
}

bool NativeRender::loadModel(const std::string &filePath) {
    // 清除现有模型
    for (auto &shape : shapes_) {
        v3dctx->ctx->Remove(shape, false);
    }
    shapes_.clear();

    // 加载STEP文件
    STEPControl_Reader reader;
    IFSelect_ReturnStatus status = reader.ReadFile(filePath.c_str());
    if (status != IFSelect_RetDone) {
        printf("Error: Failed to read STEP file: %s\n", filePath.c_str());
        return false;
    }

    // 将文件内容转换为OCCT形状
    reader.TransferRoots();
    int numShapes = reader.NbShapes();
    if (numShapes <= 0) {
        printf("Error: No shapes found in STEP file\n");
        return false;
    }

    // 加载所有形状
    for (int i = 1; i <= numShapes; i++) {
        TopoDS_Shape shape = reader.Shape(i);
        Bnd_Box bbox;
        BRepBndLib::Add(shape, bbox);
        double xmin, ymin, zmin, xmax, ymax, zmax;
        bbox.Get(xmin, ymin, zmin, xmax, ymax, zmax);
        gp_Pnt center((xmin + xmax) / 2.0, (ymin + ymax) / 2.0, (zmin + zmax) / 2.0);
        gp_Vec translation(-center.X(), -center.Y(), -center.Z());
        gp_Trsf move;
        move.SetTranslation(translation);
        BRepBuilderAPI_Transform transformer(shape, move);
        shape = transformer.Shape();
        if (!shape.IsNull()) {
            Handle(AIS_Shape) aisShape = new AIS_Shape(shape);
            // 设置材质
            Handle(Prs3d_Drawer) drawer = aisShape->Attributes();
            drawer->SetFaceBoundaryDraw(true);
            drawer->SetWireAspect(v3ddrawer->v3d_LineAspect);
            drawer->SetShadingAspect(v3ddrawer->v3d_ShadingAspect);
            v3dctx->ctx->Display(aisShape, true);
            shapes_.push_back(aisShape);
        }
    }
    v3dview->view->ZFitAll();
    v3dview->ResetView();
    OH_LOG_Print(LOG_APP, LOG_ERROR, LOG_PRINT_DOMAIN, "LoadModel",
                 "Successfully loaded STEP file with %{public}d shapes", numShapes);
    return true;
}

// setTranslation
void NativeRender::setTranslation(float tx, float ty) {
    v3dTri->SetTranslationX(tx);
    v3dTri->SetTranslationY(ty);
}

void NativeRender::render() {
    if (v3dview->view.IsNull()) {
        OH_LOG_Print(LOG_APP, LOG_ERROR, LOG_PRINT_DOMAIN, "Render", "View Is Null");
        return;
    }
    v3dview->MustBeResized();
    v3dview->Redraw();
}

void NativeRender::resize(int w, int h) {
    HILOG_ERROR(NATIVE_TAG, "InPut Size:%{public}d,%{public}d", w, h);
    v3dwin->Resize(w, h);
}

void NativeRender::setRotation(float xAngle, float yAngle) { v3dcr->SetRotation(xAngle, yAngle); }

void NativeRender::setZoomLevel(float zoom) {
    v3dTri->SetZoomLevel(std::max(0.1f, std::min(zoom, 5.0f))); // 限制缩放范围
}
void NativeRender::setClearColor(float r, float g, float b, float a) { v3dview->SetClearColor(r, g, b, a); }
void NativeRender::resetView() { v3dview->ResetView(); }
void NativeRender::SwitchView(std::string str) {
    v3dview->SwitchView(str);
}
void NativeRender::InitDevText(){
    Handle(AIS_TextLabel) aTextLabel = new AIS_TextLabel();
    const char16_t chinese_array[] = u"新时代社会主义中国接班人";
    aTextLabel->SetText(chinese_array);
    gp_Pnt position(0-(width/3), 0-(height/3), 0.0); // 例如，在原点
    aTextLabel->SetPosition(position);
    v3dctx->ctx->Display(aTextLabel, Standard_True);
    HILOG_ERROR(NATIVE_TAG, "aTextLabel字体名字:%{public}s", aTextLabel->FontName().ToCString());
    HILOG_ERROR(NATIVE_TAG, "aTextLabel字体名字:%{public}s", aTextLabel->Attributes()->TextAspect()->Aspect()->Font().ToCString());
}
} // namespace NativeOpenCAX