updated subs, added interactive torus

glow @ 7bdd20e1

-Subproject commit 35192413e0a8a52ea88046197d1dad2bfaa9f15f
+Subproject commit 7bdd20e13f1dc1d824a339d3fb4eba1e2dc8dd4b

glow-extras @ 65a79891

-Subproject commit bd0f9d69c2d39513f4dc990d0cfaa9512259a68b
+Subproject commit 65a7989156d719fb592c3291d08b8b6f2c657763

polymesh @ 384f6594

-Subproject commit a1e1259beaca6a96c28e17786bd05f9e167c0e34
+Subproject commit 384f659443ccd40c3bc355d79fd7333d6cf399db

typed-geometry @ d00bebc1

-Subproject commit 0c65f3ae381cf53588587ae1e570f13f961d1a9d
+Subproject commit d00bebc1b4e0428a22c89c9c73403e29ed687ae7

samples/wip/viewer/main.cc

@@ -9,6 +9,7 @@
 
 #include <polymesh/algorithms/normalize.hh>
 #include <polymesh/formats.hh>
+#include <polymesh/objects/quad.hh>
 
 #include <glow-extras/glfw/GlfwContext.hh>
 #include <glow-extras/vector/graphics2D.hh>
@@ -45,10 +46,6 @@ int main()
     auto edge_lengths = m.edges().map([&](pm::edge_handle e) { return edge_length(e, pos); });
     auto ptsize = m.vertices().map([&](pm::vertex_handle v) { return v.edges().avg(edge_lengths); });
 
-    // DBG
-    {
-    }
-
     // Simplest view
     glow::viewer::view(pos);
 
@@ -106,6 +103,9 @@ int main()
         // Points rendered as 3D spheres
         view(points(pos).spheres().point_size_world(0.03f));
 
+        // Simple line soup
+        view(lines(pos));
+
         // Configure view
         {
             auto v = glow::viewer::view();
@@ -193,16 +193,10 @@ int main()
             glow::viewer::interactive([r2](auto) {
                 static float configurable = 0.f;
 
-                ImGui::Begin("Interactive viewer");
                 auto const input = ImGui::SliderFloat("Height", &configurable, -3.f, 3.f);
-                ImGui::End();
-                {
-                    auto v = glow::viewer::view(r2, tg::translation(tg::vec3(0.f, configurable, 0.f)));
 
-                    // Conditional clear
-                    if (input)
-                        glow::viewer::clear_accumulation();
-                }
+                // conditionally clear view if input has changed
+                glow::viewer::view(r2, tg::translation(tg::vec3(0.f, configurable, 0.f)), glow::viewer::clear_accumulation(input));
             });
         }
     }
@@ -258,6 +252,47 @@ int main()
         }
     }
 
+    // Interactive Torus
+    {
+        pm::Mesh m;
+
+        auto pos = m.vertices().make_attribute<tg::pos3>();
+        auto uv = m.vertices().make_attribute<glm::vec2>();
+        pm::objects::add_quad(m,
+                              [&](pm::vertex_handle v, float x, float y) {
+                                  auto [cx, sx] = tg::sin_cos(tg::pi<float> * 2 * x);
+                                  auto [cy, sy] = tg::sin_cos(tg::pi<float> * 2 * y);
+                                  auto orad = 8.f;
+                                  auto irad = 3.f;
+                                  tg::vec3 t;
+                                  t.x = cx;
+                                  t.z = sx;
+                                  tg::pos3 p;
+                                  p.x = orad * cx;
+                                  p.y = irad * cy;
+                                  p.z = orad * sx;
+                                  p += t * irad * sy;
+                                  pos[v] = p;
+                                  uv[v] = {1 - x, y};
+                              },
+                              32, 32);
+
+        auto a = 0.f;
+        auto animate = false;
+        glow::viewer::interactive([&](auto dt) {
+            ImGui::Begin("Torus");
+            auto changed = ImGui::SliderFloat("angle", &a, 0.f, 360.f);
+            ImGui::Checkbox("Animate", &animate);
+            ImGui::End();
+
+            if (animate)
+                a += 5 * dt;
+            changed |= animate;
+
+            view(pos, glow::viewer::textured(uv, tex).transform(tg::rotation_around(tg::pos2::zero, tg::degree(a))), glow::viewer::clear_accumulation(changed));
+        });
+    }
+
     // Alternatively, output a single frame headlessly
     // auto view = glow::viewer::view(pos);
     // view->render()->bind().writeToFile("viewer_output.png");