From ac48ce776c153c75155024180dd459d82f731e9f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mario=20Do=CC=88ring?= <deluna.yy@gmail.com>
Date: Thu, 6 Jun 2024 11:58:39 +0200
Subject: [PATCH] Missing functions

---
 src/Geo/AABB.php                | 19 +++++++++++++++++++
 src/System/VISUCameraSystem.php | 25 +++++++++++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/src/Geo/AABB.php b/src/Geo/AABB.php
index f5fe296..2361423 100644
--- a/src/Geo/AABB.php
+++ b/src/Geo/AABB.php
@@ -213,4 +213,23 @@ public function intersectRayDistance(Ray $ray) : ?float
 
         return $tmin;
     }
+
+    /**
+     * Returns an array of 8 Vec3 representing the corners of the AABB
+     * 
+     * @return array<Vec3>
+     */
+    public function getCorners() : array
+    {
+        return [
+            new Vec3($this->min->x, $this->min->y, $this->min->z),
+            new Vec3($this->max->x, $this->min->y, $this->min->z),
+            new Vec3($this->max->x, $this->max->y, $this->min->z),
+            new Vec3($this->min->x, $this->max->y, $this->min->z),
+            new Vec3($this->min->x, $this->min->y, $this->max->z),
+            new Vec3($this->max->x, $this->min->y, $this->max->z),
+            new Vec3($this->max->x, $this->max->y, $this->max->z),
+            new Vec3($this->min->x, $this->max->y, $this->max->z),
+        ];
+    }
 }
diff --git a/src/System/VISUCameraSystem.php b/src/System/VISUCameraSystem.php
index cbdb4df..3ee734a 100644
--- a/src/System/VISUCameraSystem.php
+++ b/src/System/VISUCameraSystem.php
@@ -305,6 +305,8 @@ public function updateVISUFlyingCamera(EntitiesInterface $entities, Camera $came
         $camera->transform->markDirty();
     }
 
+    private ?Mat4 $frozenView = null;
+
     /**
      * Create a camera data structure for the given render target.
      * 
@@ -325,6 +327,29 @@ public function getCameraData(EntitiesInterface $entities, RenderTarget $renderT
         /** @var Mat4 */
         $projectionViewMatrix = $projectionMatrix * $viewMatrix;
         $inverseProjectionViewMatrix = Mat4::inverted($projectionViewMatrix);
+
+        if ($this->input->isMouseButtonPressed(MouseButton::RIGHT)) {
+            $this->frozenView = $viewMatrix->copy();
+        } elseif ($this->input->isMouseButtonPressed(MouseButton::MIDDLE)) {
+            $this->frozenView = null;
+        }
+
+        global $showFrustum;
+        if ($this->frozenView) {
+            // // debug
+            // $testView = new Mat4;
+            // $testView->rotate(GLM::radians(45.0), new Vec3(1.0, 0.0, 0.0));
+            // $testView->rotate(GLM::radians(sin(glfwGetTime()) * 90), new Vec3(0.0, 1.0, 0.0));
+
+            $fakeView = $this->frozenView->copy();
+            $projectionViewMatrix = $projectionMatrix * $fakeView;
+            $inverseProjectionViewMatrix = Mat4::inverted($projectionViewMatrix);
+
+            $showFrustum = true;
+        } else {
+            $showFrustum = false;
+        }
+
         return new CameraData(
             frameCamera: $camera,
             renderCamera: $camera,