yggdrasil75/stupidsimcpp
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yggdrasil75
2026-02-14 09:35:33 -05:00
parent af4e6ebe3f
commit a1e4a852be
1 changed files with 2 additions and 31 deletions
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33
util/grid/mesh.hpp
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@@ -291,7 +291,6 @@ public:
void drawSceneWindow(const char* windowTitle, Camera& cam, float nearClip = 0.1f, float farClip = 1000.0f, bool showFps = true) {
ImGui::Begin(windowTitle);
// Get the position and size of the content area within the ImGui window
ImVec2 canvas_p = ImGui::GetCursorScreenPos();
ImVec2 canvas_sz = ImGui::GetContentRegionAvail();
@@ -302,20 +301,16 @@ public:
ImDrawList* draw_list = ImGui::GetWindowDrawList();
// Clip drawing to the specific window area
draw_list->PushClipRect(canvas_p, ImVec2(canvas_p.x + canvas_sz.x, canvas_p.y + canvas_sz.y), true);
// Draw background
draw_list->AddRectFilled(canvas_p, ImVec2(canvas_p.x + canvas_sz.x, canvas_p.y + canvas_sz.y), IM_COL32(20, 20, 20, 255));
// Collect and project triangles
std::vector<Triangle2D> allTriangles;
for (auto& mesh : _meshes) {
std::vector<Triangle2D> meshTris = mesh->project_2d(cam, (int)canvas_sz.y, (int)canvas_sz.x, nearClip, farClip);
allTriangles.insert(allTriangles.end(), meshTris.begin(), meshTris.end());
}
// Sort by depth (Painter's Algorithm)
std::sort(allTriangles.begin(), allTriangles.end(), [](const Triangle2D& a, const Triangle2D& b) {
return a.depth > b.depth;
});
@@ -325,41 +320,20 @@ public:
ImVec2 p1(canvas_p.x + tri.a.x(), canvas_p.y + tri.a.y());
ImVec2 p2(canvas_p.x + tri.b.x(), canvas_p.y + tri.b.y());
ImVec2 p3(canvas_p.x + tri.c.x(), canvas_p.y + tri.c.y());
// Simple culling optimization
// float minX = std::min({p1.x, p2.x, p3.x});
// float minY = std::min({p1.y, p2.y, p3.y});
// float maxX = std::max({p1.x, p2.x, p3.x});
// float maxY = std::max({p1.y, p2.y, p3.y});
// if (maxX < canvas_p.x || minX > canvas_p.x + canvas_sz.x ||
// maxY < canvas_p.y || minY > canvas_p.y + canvas_sz.y) {
// continue;
// }
// float r = std::clamp(tri.color.x(), 0.0f, 1.0f);
// float g = std::clamp(tri.color.y(), 0.0f, 1.0f);
// float b = std::clamp(tri.color.z(), 0.0f, 1.0f);
ImU32 col = ImGui::ColorConvertFloat4ToU32(ImVec4(tri.color.x(), tri.color.y(), tri.color.z(), 1.0f));
draw_list->AddTriangleFilled(p1, p2, p3, col);
}
// Draw FPS Counter
if (showFps) {
char fpsText[32];
snprintf(fpsText, sizeof(fpsText), "FPS: %.1f", ImGui::GetIO().Framerate);
ImVec2 txtSz = ImGui::CalcTextSize(fpsText);
// Position: Top Right with 10px padding
ImVec2 txtPos = ImVec2(canvas_p.x + canvas_sz.x - txtSz.x - 10.0f, canvas_p.y + 10.0f);
// Semi-transparent background for text
draw_list->AddRectFilled(
ImVec2(txtPos.x - 5.0f, txtPos.y - 2.0f),
draw_list->AddRectFilled(ImVec2(txtPos.x - 5.0f, txtPos.y - 2.0f),
ImVec2(txtPos.x + txtSz.x + 5.0f, txtPos.y + txtSz.y + 2.0f),
IM_COL32(0, 0, 0, 150),
4.0f
IM_COL32(0, 0, 0, 150), 4.0f
);
draw_list->AddText(txtPos, IM_COL32(255, 255, 255, 255), fpsText);
@@ -367,9 +341,6 @@ public:
draw_list->PopClipRect();
// Invisible button to handle inputs over the viewport area
ImGui::InvisibleButton("viewport_btn", canvas_sz);
ImGui::End();
}