Triangulation: Basic level with ability to place points

triangulation.py

@@ -0,0 +1,73 @@
+import pyray as RL
+from pyray import (Rectangle as Rect, Vector2 as Vec2, Vector3 as Vec3, Camera3D, BoundingBox)
+import math
+import pdb
+import random
+from typing import Optional, Tuple, List
+from dataclasses import dataclass, field
+
+screen_width = 1280
+screen_height = 1024
+grid_slices = 100
+grid_spacing = 0.2
+
+@dataclass
+class World:
+    cam: Camera3D
+    floor_bb: BoundingBox
+    rotate_cam: bool = True
+    frame_count: int = 0
+    vertices: List[Vec3] = field(default_factory=list)
+
+def init() -> World:
+    cam = Camera3D(Vec3(0, 10, 10), Vec3(0, 0, 0), Vec3(0, 1, 0), 45, RL.CAMERA_PERSPECTIVE)
+    half_grid = grid_slices * grid_spacing * 0.5
+    floor_bb = BoundingBox(Vec3(-half_grid, -0.01, -half_grid), Vec3(half_grid, 0.01, half_grid))
+    return World(cam, floor_bb)
+
+def player_input(w: World):
+    if RL.is_key_pressed(RL.KEY_SPACE):
+        w.rotate_cam = not w.rotate_cam
+    if RL.is_mouse_button_pressed(0):
+        mouse_pos = RL.get_mouse_position()
+        ray = RL.get_mouse_ray(mouse_pos, w.cam)
+        collision = RL.get_ray_collision_box(ray, w.floor_bb)
+        if collision.hit:
+            p = collision.point
+            w.vertices.append(Vec3(p.x, 0, p.z))
+
+def update(w: World):
+    pass
+
+def draw_3d(w: World):
+    RL.draw_grid(grid_slices, grid_spacing)
+    RL.draw_bounding_box(w.floor_bb, RL.GREEN)
+    for vert in w.vertices:
+        RL.draw_sphere(vert, 0.1, RL.GREEN)
+
+def draw_2d(w: World):
+    pass
+
+RL.init_window(screen_width, screen_height, "Starter");
+RL.set_target_fps(60)
+
+w = init()
+while not RL.window_should_close():
+    player_input(w)
+    update(w)
+
+    # Drawing
+    if w.rotate_cam:
+        RL.update_camera(w.cam, RL.CameraMode.CAMERA_ORBITAL)
+    RL.begin_drawing()
+    RL.clear_background(RL.WHITE)
+
+    RL.begin_mode_3d(w.cam)
+    draw_3d(w)
+    RL.end_mode_3d()
+
+    draw_2d(w)
+
+    RL.end_drawing()
+    w.frame_count += 1
+