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

#include "NativeRender.h"
#include "Aspect_TypeOfLine.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),
    mAxis(new Axis),
    nAxis(new Axis),
    cr(new Camera),
    ctx(new Context),
    ogd(new OpenGlGraphicDriver),
    ts(new TextStyle),
    vw(new View),
    vr(new Viewer),
    win(new Window)
{
    width=w;
    height=h;
}

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

bool NativeRender::init(EGLCore& _eglCore) {
    eglCore=_eglCore;
    if(!ogd->InitOpenGlGraphicDriver(eglCore)){
        HILOG_ERROR(NATIVE_TAG,"Init GraphicDriver Fail!");
        return false;
    }
    if(!ts->InitTextStyle()){
        HILOG_ERROR(NATIVE_TAG,"Init TextSyle Fail!");
        return false;
    }
    if(!vr->InitViewer(ogd->graphicDriver)){
        HILOG_ERROR(NATIVE_TAG,"Init Viewer Fail!");
        return false;
    }
    if(!ctx->InitContext(vr->viewer)){
        HILOG_ERROR(NATIVE_TAG,"Init Ctx Fail!");
        return false;
    }
    if(!mAxis->InitAxis(ctx->context)){
        HILOG_ERROR(NATIVE_TAG,"Init AXIS Fail!");
        return false;
    }
    
    if(!mAxis->InitAxisCube(ctx->context)){
        HILOG_ERROR(NATIVE_TAG,"Init AXIS Cuba Fail!");
        return false;
    }
    
    if(!win->InitWindow(width,height)){
        HILOG_ERROR(NATIVE_TAG,"Init Window Fail!");
        return false;
    }
    if(!vw->InitView(vr->viewer)){
        HILOG_ERROR(NATIVE_TAG,"Init View Fail!");
        return false;
    }else{
        vw->SetViewOption();
        vw->SetText(ts->text);
        vw->SetWin(win->window);
    }
    if(!cr->InitCamera(vw->view)){
        HILOG_ERROR(NATIVE_TAG,"Init Camera Fail!");
        return false;
    }
    vw->ResetView();
    return true;
}

bool NativeRender::loadModel(const std::string& filePath) {
    // 清除现有模型
    for (auto& shape : shapes_) {
        ctx->context->Remove(shape, Standard_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 (Standard_Integer 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();
            Handle(Prs3d_ShadingAspect) shadingAspect = new Prs3d_ShadingAspect();
            //aisShape->SetDisplayMode(1);
            Handle(Prs3d_LineAspect) aLineAspect = new Prs3d_LineAspect(
             Quantity_NOC_BLACK, // 颜色，例如黑色
             Aspect_TOL_DASH,   // 线型
             3.0                 // 线宽
            );
            
            // 随机颜色
            int colorIndex = i % 7;
            Quantity_Color color;
            switch (colorIndex) {
                case 0: color = Quantity_NOC_RED; break;
                case 1: color = Quantity_NOC_GREEN; break;
                case 2: color = Quantity_NOC_BLUE1; break;
                case 3: color = Quantity_NOC_YELLOW; break;
                case 4: color = Quantity_NOC_MAGENTA1; break;
                case 5: color = Quantity_NOC_CYAN1; break;
                case 6: color = Quantity_NOC_ORANGE; break;
                default: color = Quantity_NOC_WHITE;
            }
            shadingAspect->SetColor(color);
            shadingAspect->SetMaterial(Graphic3d_NOM_PLASTIC);
            drawer->SetFaceBoundaryDraw(Standard_True);
            drawer->SetWireAspect(aLineAspect);
            drawer->SetShadingAspect(shadingAspect);
            ctx->context->Display(aisShape, Standard_True);
            //ctx->context->SetDisplayMode(AIS_WireFrame, Standard_False);
            shapes_.push_back(aisShape);
        }
    }
    // 调整相机到合适位置
    vw->view->FitAll(0.5, Standard_True);
    vw->view->ZFitAll();
    vw->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) {
    nAxis->SetTranslationX(tx);
    nAxis->SetTranslationY(ty);
}

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

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

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

void NativeRender::setZoomLevel(float zoom) {
    nAxis->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){
    vw->SetClearColor( r,  g,  b,  a);
}
void NativeRender::resetView() {
    vw->ResetView();
}
void NativeRender::SwitchView(std::string view){
    vw->SwitchView(view);
}


} // namespace NativeRenderer