Added core_3d_picking.py example.

Author: overdev

examples/core/core_3d_picking.py

@@ -0,0 +1,100 @@
+# core_3d_picking.py
+
+from raylibpy import *
+
+def main() -> int:
+
+    # Initialization
+    # -------------------------------------------------------------------------------------
+    screen_width: int = 800
+    screen_height: int = 450
+
+    init_window(screen_width, screen_height, b"raylib [core] example - 3d picking")
+
+    # 
+    camera: Camera = Camera()
+    camera.position = Vector3(10., 10., 10.)
+    camera.target = Vector3(0., 0., 0.)
+    camera.up = Vector3(0., 1., 0.)
+    camera.fovy = 45.0
+    camera.type = CAMERA_PERSPECTIVE
+
+    cube_position: Vector3 = Vector3(0., 1., 0.)
+    cube_size: Vector3 = Vector3(2., 2., 2.)
+
+    ray: Ray = Ray(Vector3(0., 0., 0.))
+
+    collision: bool = False
+
+    set_camera_mode(camera, CAMERA_FREE)
+
+    set_target_fps(60)
+    # --------------------------------------------------------------------------------------
+
+    # Main game loop
+    while not window_should_close():
+        # Update
+        # ---------------------------------------------------------------------------------
+        update_camera(byref(camera))
+
+        if (is_mouse_button_pressed(MOUSE_LEFT_BUTTON)):
+            ray = get_mouse_ray(get_mouse_position(), camera)
+
+            #
+            collision = check_collision_ray_box(
+                ray,
+                BoundingBox(
+                    Vector3(
+                        cube_position.x - cube_size.x / 2,
+                        cube_position.y - cube_size.y / 2,
+                        cube_position.z - cube_size.z / 2,
+                    ),
+                    Vector3(
+                        cube_position.x + cube_size.x / 2,
+                        cube_position.y + cube_size.y / 2,
+                        cube_position.z + cube_size.z / 2,
+                    )
+                )
+            )
+        # ----------------------------------------------------------------------------------
+
+        # Draw
+        # ---------------------------------------------------------------------------------
+        begin_drawing()
+
+        clear_background(RAYWHITE)
+
+        begin_mode3d(camera)
+
+        if collision:
+            draw_cube(cube_position, cube_size.x, cube_size.y, cube_size.z, RED)
+            draw_cube_wires(cube_position, cube_size.x, cube_size.y, cube_size.z, MAROON)
+
+            draw_cube_wires(cube_position, cube_size.x + .2, cube_size.y + .2, cube_size.z + .2, GREEN)
+        else:
+            draw_cube(cube_position, cube_size.x, cube_size.y, cube_size.z, GRAY)
+            draw_cube_wires(cube_position, cube_size.x, cube_size.y, cube_size.z, DARKGRAY)
+
+        draw_ray(ray, MAROON)
+        draw_grid(10, 1.0)
+
+        end_mode3d()
+
+        draw_text(b"Try Selecting the box with mouse!", 240, 10, 20, DARKGRAY)
+
+        if collision:
+            draw_text(b"BOX SELECTED", (screen_width - measure_text(b"BOX SELECTED", 30)) // 2, int(screen_height * .1), 30, GREEN)
+
+        end_drawing()
+        # ---------------------------------------------------------------------------------
+
+    # De-Initialization
+    # -------------------------------------------------------------------------------------
+    close_window()
+    # -------------------------------------------------------------------------------------
+
+    return 0
+
+
+if __name__ == '__main__':
+    main()