Extract app runtime tail, canvas camera shell, and preview sample services

src/legacy_canvas_camera_services.cpp

@@ -0,0 +1,40 @@
+#include "pch.h"
+
+#include "canvas.h"
+
+#include "legacy_canvas_projection_services.h"
+#include "legacy_canvas_render_shell_services.h"
+
+// return the 2d shape of the faces based on the current camera
+// this can be used for screen space shapes clipping
+std::vector<glm::vec2> Canvas::face_to_shape2D(int plane_index)
+{
+    return pp::panopainter::legacy_canvas_face_to_shape_2d(*this, plane_index);
+}
+
+void Canvas::push_camera()
+{
+    pp::panopainter::legacy_canvas_push_camera(*this);
+}
+
+void Canvas::pop_camera()
+{
+    pp::panopainter::legacy_canvas_pop_camera(*this);
+}
+
+CameraData Canvas::get_camera()
+{
+    return pp::panopainter::legacy_canvas_render_shell_get_camera(*this);
+}
+
+void Canvas::set_camera(const CameraData& c)
+{
+    pp::panopainter::legacy_canvas_render_shell_set_camera(*this, c);
+}
+
+void Canvas::timelapse_reset_encoder() noexcept
+{
+    m_encoder = std::make_unique<MP4Encoder>();
+    int res = glm::min<int>(m_width / 2, 1024);
+    m_encoder->init(res * 4, res * 2, 30, 2000 << 10);
+}