1 | /******************************************************************************************* |
2 | * |
3 | * raylib [core] example - Scissor test |
4 | * |
5 | * This example has been created using raylib 2.5 (www.raylib.com) |
6 | * raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details) |
7 | * |
8 | * Example contributed by Chris Dill (@MysteriousSpace) and reviewed by Ramon Santamaria (@raysan5) |
9 | * |
10 | * Copyright (c) 2019 Chris Dill (@MysteriousSpace) |
11 | * |
12 | ********************************************************************************************/ |
13 | |
14 | #include "raylib.h" |
15 | |
16 | int main(void) |
17 | { |
18 | // Initialization |
19 | //-------------------------------------------------------------------------------------- |
20 | const int screenWidth = 800; |
21 | const int screenHeight = 450; |
22 | |
23 | InitWindow(screenWidth, screenHeight, "raylib [core] example - scissor test" ); |
24 | |
25 | Rectangle scissorArea = { 0, 0, 300, 300 }; |
26 | bool scissorMode = true; |
27 | |
28 | SetTargetFPS(60); // Set our game to run at 60 frames-per-second |
29 | //-------------------------------------------------------------------------------------- |
30 | |
31 | // Main game loop |
32 | while (!WindowShouldClose()) // Detect window close button or ESC key |
33 | { |
34 | // Update |
35 | //---------------------------------------------------------------------------------- |
36 | if (IsKeyPressed(KEY_S)) scissorMode = !scissorMode; |
37 | |
38 | // Centre the scissor area around the mouse position |
39 | scissorArea.x = GetMouseX() - scissorArea.width/2; |
40 | scissorArea.y = GetMouseY() - scissorArea.height/2; |
41 | //---------------------------------------------------------------------------------- |
42 | |
43 | // Draw |
44 | //---------------------------------------------------------------------------------- |
45 | BeginDrawing(); |
46 | |
47 | ClearBackground(RAYWHITE); |
48 | |
49 | if (scissorMode) BeginScissorMode(scissorArea.x, scissorArea.y, scissorArea.width, scissorArea.height); |
50 | |
51 | // Draw full screen rectangle and some text |
52 | // NOTE: Only part defined by scissor area will be rendered |
53 | DrawRectangle(0, 0, GetScreenWidth(), GetScreenHeight(), RED); |
54 | DrawText("Move the mouse around to reveal this text!" , 190, 200, 20, LIGHTGRAY); |
55 | |
56 | if (scissorMode) EndScissorMode(); |
57 | |
58 | DrawRectangleLinesEx(scissorArea, 1, BLACK); |
59 | DrawText("Press S to toggle scissor test" , 10, 10, 20, BLACK); |
60 | |
61 | EndDrawing(); |
62 | //---------------------------------------------------------------------------------- |
63 | } |
64 | |
65 | // De-Initialization |
66 | //-------------------------------------------------------------------------------------- |
67 | CloseWindow(); // Close window and OpenGL context |
68 | //-------------------------------------------------------------------------------------- |
69 | |
70 | return 0; |
71 | } |
72 | |