From 67fd7895f41618c2aecc4b9bfcd81a7859282977 Mon Sep 17 00:00:00 2001
From: = <=>
Date: Wed, 17 Mar 2021 15:11:47 -0400
Subject: [PATCH] use new updateSimpleMesh to update orbit from gooey

---
 ext/tangerine |  2 +-
 src/gooey.cpp | 10 ++++++++--
 src/main.cpp  | 31 +++++++++++++++++++++++++++----
 3 files changed, 36 insertions(+), 7 deletions(-)

diff --git a/ext/tangerine b/ext/tangerine
index e412f21..ca151b5 160000
--- a/ext/tangerine
+++ b/ext/tangerine
@@ -1 +1 @@
-Subproject commit e412f21c7e3ca25283cdd8fe7db7d093bc63bc92
+Subproject commit ca151b5c770eb586c697fe3d29c49f0de3450e1e
diff --git a/src/gooey.cpp b/src/gooey.cpp
index 456b88c..6d7d33d 100644
--- a/src/gooey.cpp
+++ b/src/gooey.cpp
@@ -6,6 +6,7 @@
 #include <backends/imgui_impl_sdl.h>
 
 #include "gooey.h"
+#include "orbits.h"
 
 
 bool
@@ -56,8 +57,13 @@ gooDraw(SDL_Window* window, orbital_elements& orbit)
 	ImGui::Text("e: %f", orbit.ep.e);
 	ImGui::Text("mu: %f km^3/s^2", orbit.mu);
 
-	static char str0[128] = "Hello";
-	ImGui::InputText("testing", str0, IM_ARRAYSIZE(str0));
+	ImGui::Text("a:");
+	ImGui::SameLine();
+	ImGui::InputDouble("##orbit.ep.a", &orbit.ep.a, 1000.0f);
+
+	ImGui::Text("e:");
+	ImGui::SameLine();
+	ImGui::InputDouble("##orbit.ep.e", &orbit.ep.e, 0.1f);
 
 	ImGui::End();
 
diff --git a/src/main.cpp b/src/main.cpp
index 3f40934..9625c15 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -82,14 +82,37 @@ doFrameCallbackPre(render_state* rs)
 {
 	// handle input
 	static input_state is = {};
-	// TODO: probably need to break the while loop out of inputProcessEvents
-	// 	so we can send individual sdl events to ImGui_ImplSDL2_ProcessEvent()
-	// 	via gooProcessEvent()
-	inputProcessEvents(&is);
+	SDL_Event e;
+	bool gooey_wants = false;
+
+	while (SDL_PollEvent(&e)) {
+		gooey_wants = gooProcessEvent(e);
+		if (!gooey_wants) inputProcessEvent(&is, e);
+	}
 
 	if (is.window_closed || is.escape)
 		rs->running = false;
 
+	// update orbital elements/ellipse_3d
+	// TODO: could really use another ellipse constructor that uses a and e
+	g_orbit.ep = constructEllipseAB(g_orbit.ep.a,
+		g_orbit.ep.a * sqrt(1 - pow(g_orbit.ep.e, 2.0)));
+	entity& ellipse_entity = rs->render_groups[0].entities[0];
+
+	// TODO: fix this
+	double angle = 2 * M_PI / g_ellipse.vert_count;
+	for (uint i = 0; i < g_ellipse.vert_count; i++) {
+		double a = angle * i;
+		double r = g_orbit.ep.a *
+			(1 - pow(g_orbit.ep.e, 2)) / (1 + g_orbit.ep.e * cos(a));
+		g_ellipse.vertices[i] = glm::vec3(polarToRect(a, r), 0);
+		// NOTE: update mesh
+		ellipse_entity.mesh->vertices[i] = g_ellipse.vertices[i];
+		// NOTE: update entity.render_object
+		entUpdateSimpleMesh(ellipse_entity, ellipse_entity.mesh, GL_LINE_LOOP);
+	}
+
+
 	// update satellite position
 	const static glm::mat4 xform =
 		glm::rotate(glm::mat4(1.0), (float) M_PI_2, glm::vec3(1, 0, 0));