atdunbg
9ff08651f0
User feedback: the self-drawn scale handles clash visually with the ImGuizmo translate/rotate rods (different size/style, clearly not one widget). Keep the library widget for all three ops for visual consistency and prevent mis-drags by masking degenerate axes via SetAxisMask: - translate: axis ~ parallel to camera-to-object line (sin < 0.25) - scale: axis ~ perpendicular to camera-to-object line (|dot| < 0.1, intersection numerator identically zero -> grab fails/values jump) OR axis ~ parallel to view direction (|dot| > 0.98, zero screen displacement -> value never changes) - rotate: screen-space math, no degeneracy, no mask Masked axes are neither drawn nor activatable; a slight view change restores them. Center uniform-scale square (MT_SCALE_XYZ, pure screen space) stays available in any view.
60 lines
2.5 KiB
C++
60 lines
2.5 KiB
C++
//
|
||
// ViewportPanel：场景渲染输出面板。
|
||
//
|
||
// tonemap 输出经 ImGui::Image 显示（Editor 模式），并提供
|
||
// Editor Viewport / Fullscreen 显示模式切换。面板可用区域
|
||
// （物理像素）上报为渲染分辨率 → 画面精确填满面板。
|
||
//
|
||
// 点击拾取（UE 式 GPU HitProxy）：单击 → NDC 请求 id 渲染；结果
|
||
// 由 Draw 每帧轮询取走（像素级，与视觉画面一致）。
|
||
//
|
||
|
||
#ifndef HELLOVULKAN_VIEWPORTPANEL_H
|
||
#define HELLOVULKAN_VIEWPORTPANEL_H
|
||
|
||
#include "EditorContext.h"
|
||
|
||
#include <imgui.h> // ImVec2（RequestPickAt 签名）
|
||
#include <entt/entt.hpp>
|
||
#include <optional>
|
||
|
||
// Viewport 面板每帧上报的输入焦点状态（Hazel 模式：编辑器据此决定
|
||
// 游戏侧输入是否放行——悬停/持焦 Viewport 才拥有 WASD/鼠标）
|
||
struct ViewportInputState {
|
||
bool hovered = false; // 鼠标悬停在 Viewport 面板上
|
||
bool focused = false; // Viewport 面板持有键盘焦点
|
||
};
|
||
|
||
// Gizmo 交互状态（Editor 持有、ViewportPanel 写）：
|
||
// op 取 ImGuizmo::OPERATION 位掩码（TRANSLATE=7=三轴位或运算，非 0
|
||
// 起始枚举；0 = 无任何轴位 → Gizmo 完全不绘制），int 存储避免本
|
||
// 头文件 include ImGuizmo.h（拖入 imgui 宏依赖顺序）
|
||
// W/E/R 切换 op、T 切换 local/world 空间（UE 语义）；dragging 拉起
|
||
// Editor::BlockingMouse 门控
|
||
struct GizmoState {
|
||
int op = 7; // ImGuizmo::TRANSLATE（TRANSLATE_X|Y|Z）
|
||
bool localSpace = true; // 操纵空间：true=模型轴（旋转/缩放语义），
|
||
// T 键切 world
|
||
bool dragging = false; // 拖拽中（IsUsing）→ 鼠标归 Gizmo 不给游戏侧
|
||
};
|
||
|
||
class ViewportPanel {
|
||
public:
|
||
// 返回值：本帧拾取命中的实体（无点击/未命中 = nullopt 或 null）；
|
||
// Editor 据此 SelectEntity（面板不持有选中状态）
|
||
std::optional<entt::entity> Draw(const EditorContext& ctx,
|
||
ViewportInputState& out,
|
||
GizmoState& gizmo,
|
||
entt::entity selected) const;
|
||
|
||
private:
|
||
// Image 区域内的鼠标位置 → NDC → Renderer::RequestPick
|
||
//（结果下一帧由 Draw 轮询 TakePickResult 取走）
|
||
void RequestPickAt(const EditorContext& ctx, const ImVec2& size) const;
|
||
|
||
// 命中打印：实体名 + collider 参数对照（诊断物理盒 ≠ 视觉用）
|
||
static void LogPick(const EditorContext& ctx, entt::entity e);
|
||
};
|
||
|
||
#endif //HELLOVULKAN_VIEWPORTPANEL_H
|