100 lines
3.9 KiB
C
100 lines
3.9 KiB
C
/*******************************************************************************************
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*
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* raylib [models] example - Show the difference between perspective and orthographic projection
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*
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* This program is heavily based on the geometric objects example
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*
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* This example has been created using raylib 2.0 (www.raylib.com)
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* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
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*
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* Example contributed by Max Danielsson (@autious) and reviewed by Ramon Santamaria (@raysan5)
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*
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* Copyright (c) 2018 Max Danielsson (@autious) and Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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#define FOVY_PERSPECTIVE 45.0f
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#define WIDTH_ORTHOGRAPHIC 10.0f
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int main(void)
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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const int screenWidth = 800;
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const int screenHeight = 450;
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InitWindow(screenWidth, screenHeight, "raylib [models] example - geometric shapes");
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// Define the camera to look into our 3d world
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Camera camera = {{ 0.0f, 10.0f, 10.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, FOVY_PERSPECTIVE, CAMERA_PERSPECTIVE };
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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//--------------------------------------------------------------------------------------
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// Main game loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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// Update
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//----------------------------------------------------------------------------------
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if (IsKeyPressed(KEY_SPACE))
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{
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if (camera.type == CAMERA_PERSPECTIVE)
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{
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camera.fovy = WIDTH_ORTHOGRAPHIC;
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camera.type = CAMERA_ORTHOGRAPHIC;
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}
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else
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{
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camera.fovy = FOVY_PERSPECTIVE;
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camera.type = CAMERA_PERSPECTIVE;
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}
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}
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(RAYWHITE);
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BeginMode3D(camera);
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DrawCube((Vector3){-4.0f, 0.0f, 2.0f}, 2.0f, 5.0f, 2.0f, RED);
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DrawCubeWires((Vector3){-4.0f, 0.0f, 2.0f}, 2.0f, 5.0f, 2.0f, GOLD);
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DrawCubeWires((Vector3){-4.0f, 0.0f, -2.0f}, 3.0f, 6.0f, 2.0f, MAROON);
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DrawSphere((Vector3){-1.0f, 0.0f, -2.0f}, 1.0f, GREEN);
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DrawSphereWires((Vector3){1.0f, 0.0f, 2.0f}, 2.0f, 16, 16, LIME);
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DrawCylinder((Vector3){4.0f, 0.0f, -2.0f}, 1.0f, 2.0f, 3.0f, 4, SKYBLUE);
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DrawCylinderWires((Vector3){4.0f, 0.0f, -2.0f}, 1.0f, 2.0f, 3.0f, 4, DARKBLUE);
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DrawCylinderWires((Vector3){4.5f, -1.0f, 2.0f}, 1.0f, 1.0f, 2.0f, 6, BROWN);
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DrawCylinder((Vector3){1.0f, 0.0f, -4.0f}, 0.0f, 1.5f, 3.0f, 8, GOLD);
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DrawCylinderWires((Vector3){1.0f, 0.0f, -4.0f}, 0.0f, 1.5f, 3.0f, 8, PINK);
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DrawGrid(10, 1.0f); // Draw a grid
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EndMode3D();
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DrawText("Press Spacebar to switch camera type", 10, GetScreenHeight() - 30, 20, DARKGRAY);
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if (camera.type == CAMERA_ORTHOGRAPHIC) DrawText("ORTHOGRAPHIC", 10, 40, 20, BLACK);
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else if (camera.type == CAMERA_PERSPECTIVE) DrawText("PERSPECTIVE", 10, 40, 20, BLACK);
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DrawFPS(10, 10);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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// De-Initialization
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//--------------------------------------------------------------------------------------
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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