From c5f60e3699d51517f3865654a8de11036c43f61d Mon Sep 17 00:00:00 2001
From: josh <josh@stepbro.wtf>
Date: Sat, 20 Jan 2024 14:02:43 -0500
Subject: [PATCH] Implement OutlineRect2D

---
 include/JGL/JGL.h | 17 ++++++++++++++---
 main.cpp          |  3 ++-
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/include/JGL/JGL.h b/include/JGL/JGL.h
index 2b8cdcd..ab27be5 100644
--- a/include/JGL/JGL.h
+++ b/include/JGL/JGL.h
@@ -47,7 +47,7 @@ namespace JGL {
 
     Vector2 ScreenToViewport(const Vector2& v)
     {
-        // TODO: Implement matrix transformation
+        // TODO: Implement (CORRECT!!!) matrix transformation
         float x = v.x / 600.f;
         float y = v.y / 600.f;
 
@@ -57,7 +57,7 @@ namespace JGL {
     }
     Vector2 ViewportToScreen(const Vector2& v)
     {
-        // TODO: Implement matrix transformation
+        // TODO: Implement (CORRECT!!!) matrix transformation
     }
 
     void DrawPixel2D(const Color3 &, int x, int y);
@@ -88,7 +88,18 @@ namespace JGL {
             glVertex2f(vp_pos.x + vp_size.x, vp_pos.y);
         glEnd();
     }
-    void OutlineRect2D       (const Vector2& pos, const Vector2& size, const Color3& color, float thickness = 1);
+    void OutlineRect2D       (const Vector2& pos, const Vector2& size, const Color3& color, float thickness = 1)
+    {
+        auto vp_pos = ScreenToViewport(pos);
+        auto vp_size = ScreenToViewport(size);
+        glBegin(GL_LINE_LOOP);
+            glColor3f(color.r, color.g, color.b);
+            glVertex2f(vp_pos.x, vp_pos.y);
+            glVertex2f(vp_pos.x, vp_pos.y + vp_size.y);
+            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y + vp_size.y);
+            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y);
+        glEnd();
+    }
     void FillRoundedRect2D   (const Vector2& pos, const Vector2& size, const Color3& color, float radius);
     void OutlineRoundedRect2D(const Vector2& pos, const Vector2& size, const Color3& color, float radius, float thickness = 1);
     void OutlinePolygon2D    ();
diff --git a/main.cpp b/main.cpp
index 53f4379..1f78667 100644
--- a/main.cpp
+++ b/main.cpp
@@ -42,7 +42,8 @@ void display() {
         glVertex2f(-0.9f, -0.3f);
     glEnd();
 
-    JGL::FillRect2D({64, 64}, {128, 128}, JGL::Colors::White);
+    JGL::FillRect2D({0, 0}, {128, 128}, JGL::Colors::White);
+    JGL::OutlineRect2D({0, 0}, {128, 128}, JGL::Colors::BrightRed);
 
     glBegin(GL_TRIANGLES);
         glColor3f(0.0f, 0.0f, 1.f); // Blue