From e86be28cc04a3278a7053aa8d2aab9342beb3d58 Mon Sep 17 00:00:00 2001
From: Fabien Freling <public@ffreling.com>
Date: Wed, 16 Feb 2022 00:26:59 +0100
Subject: [PATCH] move bboxes

---
 src/main_gui.cpp | 47 +++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 41 insertions(+), 6 deletions(-)

diff --git a/src/main_gui.cpp b/src/main_gui.cpp
index e3c98f0..41edd81 100644
--- a/src/main_gui.cpp
+++ b/src/main_gui.cpp
@@ -19,12 +19,18 @@
 
 namespace fs = std::filesystem;
 
-void draw(const freling::BoundingBox& box,
-          const Vector2& offset,
-          const Color& color) {
+Rectangle rect_from_bbox(const freling::BoundingBox& box,
+                         const Vector2& offset) {
     const Rectangle rect = {offset.x + box.x, offset.y + box.y,
                             static_cast<float>(box.width),
                             static_cast<float>(box.height)};
+    return rect;
+}
+
+void draw(const freling::BoundingBox& box,
+          const Vector2& offset,
+          const Color& color) {
+    const Rectangle rect = rect_from_bbox(box, offset);
     DrawRectangleRec(rect, ColorAlpha(color, 0.3));
     DrawRectangleLinesEx(rect, 3, color);
 }
@@ -78,7 +84,8 @@ int main(int argc, const char* argv[]) {
         bboxes.push_back(freling::BoundingBox({x, y, w, h}));
         i += 4;
     }
-    const std::vector<Color> bbox_colors = {RED, GREEN, BLUE};
+    const std::vector<Color> bbox_colors = {RED,    GREEN,  BLUE,
+                                            YELLOW, ORANGE, PURPLE};
     std::vector<freling::BoundingBox> packed_bboxes;
 
     Vector2 win_size = {800, 450};
@@ -102,8 +109,36 @@ int main(int argc, const char* argv[]) {
     SetWindowSize(win_size.x, win_size.y);
 
     const Vector2 b_size = {150, 30};
+    Vector2 mouse_pos = {0};
+    Vector2 mouse_delta = {0};
+    int b_moving_idx = -1;
 
     while (!WindowShouldClose()) {
+        //
+        // Update
+        //
+        mouse_pos = GetMousePosition();
+        mouse_delta = GetMouseDelta();
+        for (int b = 0, size = bboxes.size(); b < size; ++b) {
+            const auto& box = bboxes[b];
+            const Rectangle rect = rect_from_bbox(box, in_offset);
+            if (CheckCollisionPointRec(mouse_pos, rect) and
+                IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) {
+                b_moving_idx = b;
+            }
+        }
+        if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT)) {
+            b_moving_idx = -1;
+        }
+        if (b_moving_idx != -1) {
+            auto& box = bboxes[b_moving_idx];
+            box.x += mouse_delta.x;
+            box.y += mouse_delta.y;
+        }
+
+        //
+        // Draw
+        //
         BeginDrawing();
         ClearBackground(RAYWHITE);
 
@@ -150,7 +185,7 @@ int main(int argc, const char* argv[]) {
 
         int c = 0;
         for (const auto& b : bboxes) {
-            const auto& color = bbox_colors[c % bboxes.size()];
+            const auto& color = bbox_colors[c % bbox_colors.size()];
             draw(b, in_offset, color);
             ++c;
         };
@@ -167,7 +202,7 @@ int main(int argc, const char* argv[]) {
 
             int c = 0;
             for (const auto& b : packed_bboxes) {
-                const auto& color = bbox_colors[c % bboxes.size()];
+                const auto& color = bbox_colors[c % bbox_colors.size()];
                 draw(b, pack_offset, color);
                 ++c;
             };