1 | /******************************************************************************************* |
2 | * |
3 | * raylib [models] example - Show the difference between perspective and orthographic projection |
4 | * |
5 | * This program is heavily based on the geometric objects example |
6 | * |
7 | * This example has been created using raylib 2.0 (www.raylib.com) |
8 | * raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details) |
9 | * |
10 | * Example contributed by Max Danielsson (@autious) and reviewed by Ramon Santamaria (@raysan5) |
11 | * |
12 | * Copyright (c) 2018 Max Danielsson (@autious) and Ramon Santamaria (@raysan5) |
13 | * |
14 | ********************************************************************************************/ |
15 | |
16 | #include "raylib.h" |
17 | |
18 | #define FOVY_PERSPECTIVE 45.0f |
19 | #define WIDTH_ORTHOGRAPHIC 10.0f |
20 | |
21 | int main(void) |
22 | { |
23 | // Initialization |
24 | //-------------------------------------------------------------------------------------- |
25 | const int screenWidth = 800; |
26 | const int screenHeight = 450; |
27 | |
28 | InitWindow(screenWidth, screenHeight, "raylib [models] example - geometric shapes" ); |
29 | |
30 | // Define the camera to look into our 3d world |
31 | Camera camera = { { 0.0f, 10.0f, 10.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, FOVY_PERSPECTIVE, CAMERA_PERSPECTIVE }; |
32 | |
33 | SetTargetFPS(60); // Set our game to run at 60 frames-per-second |
34 | //-------------------------------------------------------------------------------------- |
35 | |
36 | // Main game loop |
37 | while (!WindowShouldClose()) // Detect window close button or ESC key |
38 | { |
39 | // Update |
40 | //---------------------------------------------------------------------------------- |
41 | if (IsKeyPressed(KEY_SPACE)) |
42 | { |
43 | if (camera.type == CAMERA_PERSPECTIVE) |
44 | { |
45 | camera.fovy = WIDTH_ORTHOGRAPHIC; |
46 | camera.type = CAMERA_ORTHOGRAPHIC; |
47 | } |
48 | else |
49 | { |
50 | camera.fovy = FOVY_PERSPECTIVE; |
51 | camera.type = CAMERA_PERSPECTIVE; |
52 | } |
53 | } |
54 | //---------------------------------------------------------------------------------- |
55 | |
56 | // Draw |
57 | //---------------------------------------------------------------------------------- |
58 | BeginDrawing(); |
59 | |
60 | ClearBackground(RAYWHITE); |
61 | |
62 | BeginMode3D(camera); |
63 | |
64 | DrawCube((Vector3){-4.0f, 0.0f, 2.0f}, 2.0f, 5.0f, 2.0f, RED); |
65 | DrawCubeWires((Vector3){-4.0f, 0.0f, 2.0f}, 2.0f, 5.0f, 2.0f, GOLD); |
66 | DrawCubeWires((Vector3){-4.0f, 0.0f, -2.0f}, 3.0f, 6.0f, 2.0f, MAROON); |
67 | |
68 | DrawSphere((Vector3){-1.0f, 0.0f, -2.0f}, 1.0f, GREEN); |
69 | DrawSphereWires((Vector3){1.0f, 0.0f, 2.0f}, 2.0f, 16, 16, LIME); |
70 | |
71 | DrawCylinder((Vector3){4.0f, 0.0f, -2.0f}, 1.0f, 2.0f, 3.0f, 4, SKYBLUE); |
72 | DrawCylinderWires((Vector3){4.0f, 0.0f, -2.0f}, 1.0f, 2.0f, 3.0f, 4, DARKBLUE); |
73 | DrawCylinderWires((Vector3){4.5f, -1.0f, 2.0f}, 1.0f, 1.0f, 2.0f, 6, BROWN); |
74 | |
75 | DrawCylinder((Vector3){1.0f, 0.0f, -4.0f}, 0.0f, 1.5f, 3.0f, 8, GOLD); |
76 | DrawCylinderWires((Vector3){1.0f, 0.0f, -4.0f}, 0.0f, 1.5f, 3.0f, 8, PINK); |
77 | |
78 | DrawGrid(10, 1.0f); // Draw a grid |
79 | |
80 | EndMode3D(); |
81 | |
82 | DrawText("Press Spacebar to switch camera type" , 10, GetScreenHeight() - 30, 20, DARKGRAY); |
83 | |
84 | if (camera.type == CAMERA_ORTHOGRAPHIC) DrawText("ORTHOGRAPHIC" , 10, 40, 20, BLACK); |
85 | else if (camera.type == CAMERA_PERSPECTIVE) DrawText("PERSPECTIVE" , 10, 40, 20, BLACK); |
86 | |
87 | DrawFPS(10, 10); |
88 | |
89 | EndDrawing(); |
90 | //---------------------------------------------------------------------------------- |
91 | } |
92 | |
93 | // De-Initialization |
94 | //-------------------------------------------------------------------------------------- |
95 | CloseWindow(); // Close window and OpenGL context |
96 | //-------------------------------------------------------------------------------------- |
97 | |
98 | return 0; |
99 | } |
100 | |