186 lines
7.8 KiB
C++
186 lines
7.8 KiB
C++
#include "VtkSceneView.hpp"
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#include <algorithm>
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#include <memory>
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#include <utility>
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#include <vtkActor.h>
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#include <vtkCubeAxesActor.h>
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#include <vtkRenderWindow.h>
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#include <vtkRenderer.h>
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#include <vtkVolume.h>
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#include "CameraPreset.hpp"
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#include "Scene.hpp"
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#include "Theme.hpp"
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#include "actors/AxesActor.hpp"
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#include "actors/CurtainActor.hpp"
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#include "actors/MapLineActor.hpp"
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#include "actors/TerrainActor.hpp"
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#include "actors/VoxelActor.hpp"
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#include "geo/GeoLocalFrame.hpp"
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namespace geopro::app {
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namespace {
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// 控制器层枚举 → render 层枚举（保持控制器不依赖 render）。
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geopro::render::AxesMode toRenderMode(geopro::controller::AxesMode m) {
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switch (m) {
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case geopro::controller::AxesMode::Standard: return geopro::render::AxesMode::Standard;
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case geopro::controller::AxesMode::Stereo: return geopro::render::AxesMode::Stereo;
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case geopro::controller::AxesMode::None: return geopro::render::AxesMode::None;
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}
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return geopro::render::AxesMode::Standard;
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}
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geopro::render::AxesUnit toRenderUnit(geopro::controller::AxesUnit u) {
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switch (u) {
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case geopro::controller::AxesUnit::None: return geopro::render::AxesUnit::None;
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case geopro::controller::AxesUnit::Meter: return geopro::render::AxesUnit::Meter;
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case geopro::controller::AxesUnit::Feet: return geopro::render::AxesUnit::Feet;
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case geopro::controller::AxesUnit::LatLon: return geopro::render::AxesUnit::LatLon;
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}
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return geopro::render::AxesUnit::Meter;
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}
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geopro::render::ViewDir toRenderViewDir(geopro::controller::ViewDir d) {
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switch (d) {
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case geopro::controller::ViewDir::Front: return geopro::render::ViewDir::Front;
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case geopro::controller::ViewDir::Back: return geopro::render::ViewDir::Back;
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case geopro::controller::ViewDir::Left: return geopro::render::ViewDir::Left;
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case geopro::controller::ViewDir::Right: return geopro::render::ViewDir::Right;
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case geopro::controller::ViewDir::Top: return geopro::render::ViewDir::Top;
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case geopro::controller::ViewDir::Bottom: return geopro::render::ViewDir::Bottom;
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}
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return geopro::render::ViewDir::Front;
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}
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} // namespace
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VtkSceneView::VtkSceneView(geopro::render::Scene& scene, vtkRenderWindow* renderWindow,
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std::shared_ptr<geopro::core::GeoLocalFrame> frame, double zRefElev)
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: scene_(scene),
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renderWindow_(renderWindow),
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frame_(std::move(frame)),
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zRefElev_(zRefElev) {}
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void VtkSceneView::clear() {
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scene_.clear(); // RemoveAllViewProps：连同坐标轴一并移除
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currentAxes_ = nullptr; // 旧坐标轴已随 clear 移除，置空避免悬留引用
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// 体素 image 失效：置空并通知上层关闭切片（防切片附着到已移除的 image）。
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currentVolumeImage_ = nullptr;
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frameAnchoredToData_ = false; // 新一轮选择重新按其首个真实剖面重锚原点
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if (onVolumeChanged) onVolumeChanged();
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}
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void VtkSceneView::setVerticalExaggeration(double ve) { verticalExaggeration_ = ve; }
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void VtkSceneView::addSurveyLine(const geopro::core::Grid& grid) {
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auto line = geopro::render::buildSurveyLine(grid, *frame_);
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if (line) scene_.addActor(line);
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}
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void VtkSceneView::addCurtain(const geopro::core::Grid& grid, const geopro::core::ColorScale& cs) {
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// 首个带经纬度的剖面到达 → 把 GeoLocalFrame 原点重锚到该剖面 lat/lon 中心：使局部坐标从 0 附近起
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// (轴刻度有意义)，同一选择内多条剖面共用此原点 → 相互地理配准。无经纬剖面是平面、不受原点影响。
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const int nx = grid.nx();
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if (!frameAnchoredToData_ && nx > 0 && static_cast<int>(grid.lat.size()) >= nx &&
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static_cast<int>(grid.lon.size()) >= nx) {
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double la0 = grid.lat[0], la1 = grid.lat[0], lo0 = grid.lon[0], lo1 = grid.lon[0];
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for (int i = 1; i < nx; ++i) {
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la0 = std::min(la0, grid.lat[i]); la1 = std::max(la1, grid.lat[i]);
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lo0 = std::min(lo0, grid.lon[i]); lo1 = std::max(lo1, grid.lon[i]);
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}
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frame_ = std::make_shared<geopro::core::GeoLocalFrame>((la0 + la1) / 2.0, (lo0 + lo1) / 2.0);
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frameAnchoredToData_ = true;
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}
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auto curtain = geopro::render::buildCurtain(grid, cs, *frame_);
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if (curtain) {
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curtain->SetScale(1.0, 1.0, verticalExaggeration_); // 纵向夸张成墙
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scene_.addActor(curtain);
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}
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}
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void VtkSceneView::addVolume(const geopro::data::VolumeGrid& vol, const geopro::core::ColorScale& cs) {
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// 纵向夸张烤进 image 的 z 原点/间距（与帘面 SetScale 同倍，保证纵向一致）。
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// 用暴露 image 的 buildVoxel 重载：保留 currentVolumeImage_ 供 P3 切片附着（几何含 VE）。
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vtkSmartPointer<vtkImageData> image;
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auto volume = geopro::render::buildVoxel(
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vol.vol, cs, vol.origin[0], vol.origin[1], vol.origin[2] * verticalExaggeration_,
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vol.spacing[0], vol.spacing[1], vol.spacing[2] * verticalExaggeration_, vol.vmin, vol.vmax,
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image);
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if (volume) {
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scene_.addViewProp(volume);
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currentVolumeImage_ = image;
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currentColorScale_ = cs;
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currentVmin_ = vol.vmin;
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currentVmax_ = vol.vmax;
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if (onVolumeChanged) onVolumeChanged();
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}
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}
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void VtkSceneView::addTerrain(const geopro::data::TerrainPaths& paths) {
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auto terrain = geopro::render::buildTerrain(paths.demPath, paths.imagePath, *frame_, zRefElev_,
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verticalExaggeration_);
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if (terrain) scene_.addActor(terrain);
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}
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void VtkSceneView::setAxes(geopro::controller::AxesMode mode, geopro::controller::AxesUnit unit,
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int fontSize) {
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axesMode_ = mode;
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axesUnit_ = unit;
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axesFontSize_ = fontSize;
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}
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void VtkSceneView::applyCameraView(geopro::controller::ViewDir dir) {
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geopro::render::applyView(scene_.renderer(), toRenderViewDir(dir));
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if (renderWindow_) renderWindow_->Render();
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}
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void VtkSceneView::zoom(double factor) {
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geopro::render::zoomBy(scene_.renderer(), factor);
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if (renderWindow_) renderWindow_->Render();
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}
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void VtkSceneView::fitView() {
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geopro::render::fitView(scene_.renderer());
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if (renderWindow_) renderWindow_->Render();
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}
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void VtkSceneView::rebuildAxes() {
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// 先移除上一次的坐标轴 prop：render 可能在一次 rebuild 内多次调用（末尾统一 render +
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// 异步回灌 render），不先移除会叠加坐标轴（评审 HIGH）。移除后再算 bounds（仅数据图元）。
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if (currentAxes_) {
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scene_.renderer()->RemoveViewProp(currentAxes_);
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currentAxes_ = nullptr;
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}
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// 坐标轴随数据包围盒重建：按已加入的数据图元算 bounds，再造 vtkCubeAxesActor 入场。
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// None 模式或无内容 → buildAxes 返回 nullptr，场景无坐标轴。
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double bounds[6];
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scene_.renderer()->ComputeVisiblePropBounds(bounds);
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geopro::render::AxesOptions opts;
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opts.mode = toRenderMode(axesMode_);
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opts.unit = toRenderUnit(axesUnit_);
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opts.fontSize = axesFontSize_;
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opts.frame = frame_.get();
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auto axes = geopro::render::buildAxes(bounds, opts, scene_.renderer());
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if (axes) {
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scene_.addViewProp(axes);
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currentAxes_ = axes;
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}
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}
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void VtkSceneView::render(bool is2D) {
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// 视图区背景永远深色（规范 §0.5：不随明暗切换），让色阶数据更突出。
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double bgR, bgG, bgB;
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geopro::app::vtkBackground(bgR, bgG, bgB);
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scene_.renderer()->SetBackground(bgR, bgG, bgB);
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// 坐标轴仅三维视图显示（2D 俯视测线不需要立体坐标轴）。
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if (!is2D) rebuildAxes();
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if (is2D)
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geopro::render::applyTop2D(scene_.renderer());
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else
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geopro::render::applyFree3D(scene_.renderer());
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scene_.renderer()->ResetCamera();
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if (renderWindow_) renderWindow_->Render();
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}
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} // namespace geopro::app
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