update color scheme

include/config.hpp

@@ -3,7 +3,6 @@
 
 #include <raylib.h>
 
-
 // TODO: Using the octree from the last frame completely breaks the physics :/
 // #define ASYNC_OCTREE
 
@@ -46,12 +45,14 @@ constexpr int FONT_SIZE = 26;
 // Camera Controls
 constexpr float CAMERA_FOV = 90.0;
 constexpr float FOV_SPEED = 1.0;
+constexpr float FOV_MULTIPLIER = 4.0;
 constexpr float MIN_FOV = 10.0;
-constexpr float MAX_FOV = 180.0;
+constexpr float MAX_PERSP_FOV = 120.0;
+constexpr float MAX_ORTHO_FOV = 540.0;
 constexpr float CAMERA_DISTANCE = 150.0;
-constexpr float ZOOM_SPEED = 2.5;
 constexpr float MIN_CAMERA_DISTANCE = 2.0;
 constexpr float MAX_CAMERA_DISTANCE = 2000.0;
+constexpr float ZOOM_SPEED = 2.5;
 constexpr float ZOOM_MULTIPLIER = 4.0;
 constexpr float PAN_SPEED = 2.0;
 constexpr float PAN_MULTIPLIER = 10.0;
@@ -63,26 +64,26 @@ constexpr float TARGET_UPS = 90;             // How often to update physics
 constexpr float TIMESTEP = 1.0 / TARGET_UPS; // Update interval in seconds
 constexpr float SIM_SPEED = 4.0;             // How large each update should be
 constexpr float MASS = 1.0;                  // Mass spring system
-constexpr float SPRING_CONSTANT = 5.0;       // Mass spring system
+constexpr float SPRING_K = 4.0;              // Mass spring system
-constexpr float DAMPENING_CONSTANT = 1.0;    // Mass spring system
+constexpr float DAMPENING_K = 1.0;           // Mass spring system
 constexpr float REST_LENGTH = 3.0;           // Mass spring system
-constexpr float VERLET_DAMPENING = 0.05;     // [0, 1]
+constexpr float VERLET_DAMPENING = 0.1;      // [0, 1]
 constexpr float BH_FORCE = 2.5;              // Barnes-Hut [1.0, 3.0]
 constexpr float THETA = 0.8;                 // Barnes-Hut [0.5, 1.0]
-constexpr float SOFTENING = 0.01;            // Barnes-Hut [0.01, 1.0]
+constexpr float SOFTENING = 0.05;            // Barnes-Hut [0.01, 1.0]
 
 // Graph Drawing
-static const Color EDGE_COLOR = Fade(PURPLE, 0.75);
+static const Color EDGE_COLOR = Fade(BLUE, 0.3);
 constexpr float VERTEX_SIZE = 0.75;
-static const Color VERTEX_COLOR = Fade(BLUE, 0.5);
-constexpr Color VERTEX_VISITED_COLOR = DARKPURPLE;
-constexpr Color VERTEX_PATH_COLOR = GREEN;
-constexpr Color VERTEX_TARGET_COLOR = RED;
-constexpr Color VERTEX_START_COLOR = ORANGE;
-constexpr Color VERTEX_CURRENT_COLOR = DARKBLUE;
-static const Color VERTEX_CLOSEST_COLOR = Fade(PINK, 0.85);
-static const Color VERTEX_FARTHEST_COLOR = Fade(BLUE, 0.5);
 constexpr int DRAW_VERTICES_LIMIT = 1000000;
+static const Color VERTEX_COLOR = Fade(BLUE, 0.8);
+constexpr Color VERTEX_VISITED_COLOR = ORANGE;
+constexpr Color VERTEX_START_COLOR = ORANGE;
+constexpr Color VERTEX_CURRENT_COLOR = ORANGE;
+constexpr Color VERTEX_PATH_COLOR = GREEN;
+constexpr Color VERTEX_TARGET_COLOR = GREEN;
+static const Color VERTEX_CLOSEST_COLOR = Fade(PINK, 1.0);
+static const Color VERTEX_FARTHEST_COLOR = Fade(DARKBLUE, 0.8);
 
 // Klotski Drawing
 constexpr int BOARD_PADDING = 10;
@@ -97,5 +98,4 @@ constexpr Color WALL_COLOR = BLACK;
 static constexpr int SMALL_TASK_BLOCK_SIZE = 256; // Weirdly larger blocks decrease performance...
 static constexpr int LARGE_TASK_BLOCK_SIZE = 256;
 
-
 #endif

include/input_handler.hpp

@@ -75,6 +75,7 @@ public:
     bool mark_path = false;
     bool mark_solutions = false;
     bool connect_solutions = false;
+    bool color_by_distance = false;
 
     // Camera
     bool camera_lock = true;
@@ -139,6 +140,7 @@ public:
     auto clear_graph() -> void;
     auto toggle_mark_solutions() -> void;
     auto toggle_connect_solutions() -> void;
+    auto toggle_color_by_distance() -> void;
     auto toggle_mark_path() -> void;
     auto goto_optimal_next_state() const -> void;
     auto goto_most_distant_state() const -> void;

src/cpu_spring_system.cpp

@@ -87,8 +87,8 @@ auto cpu_spring_system::calculate_spring_force(const size_t s) -> void
     const float inv_len = 1.0f / sqrt(sq_len);
     const float len = sq_len * inv_len;
 
-    const float hooke = SPRING_CONSTANT * (len - REST_LENGTH);
+    const float hooke = SPRING_K * (len - REST_LENGTH);
-    const float dampening = DAMPENING_CONSTANT * Vector3DotProduct(delta_vel, delta_pos) * inv_len;
+    const float dampening = DAMPENING_K * Vector3DotProduct(delta_vel, delta_pos) * inv_len;
 
     const Vector3 a_force = Vector3Scale(delta_pos, -(hooke + dampening) * inv_len);
     const Vector3 b_force = a_force * -1.0f;

src/input_handler.cpp

@@ -42,6 +42,7 @@ auto input_handler::init_handlers() -> void
     register_key_pressed_handler(KEY_C, &input_handler::clear_graph);
     register_key_pressed_handler(KEY_I, &input_handler::toggle_mark_solutions);
     register_key_pressed_handler(KEY_O, &input_handler::toggle_connect_solutions);
+    register_key_pressed_handler(KEY_Z, &input_handler::toggle_color_by_distance);
 
     register_key_pressed_handler(KEY_TAB, &input_handler::toggle_editing);
     register_key_pressed_handler(KEY_F, &input_handler::toggle_restricted_movement);
@@ -142,12 +143,17 @@ auto input_handler::camera_zoom() const -> void
 
 auto input_handler::camera_fov() const -> void
 {
-    if (!mouse_in_graph_pane() || !IsKeyDown(KEY_LEFT_CONTROL) || IsKeyDown(KEY_LEFT_SHIFT)) {
+    if (!mouse_in_graph_pane() || !IsKeyDown(KEY_LEFT_CONTROL)) {
         return;
     }
 
     const float wheel = GetMouseWheelMove();
+
+    if (IsKeyDown(KEY_LEFT_SHIFT)) {
+        camera.fov -= wheel * FOV_SPEED * FOV_MULTIPLIER;
+    } else {
         camera.fov -= wheel * FOV_SPEED;
+    }
 }
 
 auto input_handler::select_block() -> void
@@ -407,6 +413,11 @@ auto input_handler::toggle_connect_solutions() -> void
     connect_solutions = !connect_solutions;
 }
 
+auto input_handler::toggle_color_by_distance() -> void
+{
+    color_by_distance = !color_by_distance;
+}
+
 auto input_handler::toggle_mark_path() -> void
 {
     mark_path = !mark_path;

src/orbit_camera.cpp

@@ -63,7 +63,11 @@ auto orbit_camera::update(const Vector3& current_target, const Vector3& mass_cen
     const float y = sin(angle_y) * actual_distance;
     const float z = cos(angle_y) * cos(angle_x) * actual_distance;
 
-    fov = Clamp(fov, MIN_FOV, MAX_FOV);
+    if (projection == CAMERA_ORTHOGRAPHIC) {
+        fov = Clamp(fov, MIN_FOV, MAX_ORTHO_FOV);
+    } else {
+        fov = Clamp(fov, MIN_FOV, MAX_PERSP_FOV);
+    }
 
     camera.position = Vector3Add(target, Vector3(x, y, z));
     camera.target = target;

src/renderer.cpp

@@ -104,7 +104,7 @@ auto renderer::draw_mass_springs(const std::vector<Vector3>& masses) -> void
                 } else if (state.get_visit_counts().at(mass) > 0) {
                     // Visited vertex
                     c = VERTEX_VISITED_COLOR;
-                } else if (distances.size() == masses.size()) {
+                } else if (input.color_by_distance && distances.size() == masses.size()) {
                     c = lerp_color(VERTEX_FARTHEST_COLOR,
                                    VERTEX_CLOSEST_COLOR,
                                    static_cast<float>(distances[mass]));