browser/external/raylib-4.5.0/examples/models/models_orthographic_projection.c

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2023-09-27 15:02:24 -04:00
/*******************************************************************************************
*
* raylib [models] example - Show the difference between perspective and orthographic projection
*
* Example originally created with raylib 2.0, last time updated with raylib 3.7
*
* Example contributed by Max Danielsson (@autious) and reviewed by Ramon Santamaria (@raysan5)
*
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software
*
* Copyright (c) 2018-2023 Max Danielsson (@autious) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#define FOVY_PERSPECTIVE 45.0f
#define WIDTH_ORTHOGRAPHIC 10.0f
//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [models] example - geometric shapes");
// Define the camera to look into our 3d world
Camera camera = { { 0.0f, 10.0f, 10.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, FOVY_PERSPECTIVE, CAMERA_PERSPECTIVE };
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
if (IsKeyPressed(KEY_SPACE))
{
if (camera.projection == CAMERA_PERSPECTIVE)
{
camera.fovy = WIDTH_ORTHOGRAPHIC;
camera.projection = CAMERA_ORTHOGRAPHIC;
}
else
{
camera.fovy = FOVY_PERSPECTIVE;
camera.projection = CAMERA_PERSPECTIVE;
}
}
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
BeginMode3D(camera);
DrawCube((Vector3){-4.0f, 0.0f, 2.0f}, 2.0f, 5.0f, 2.0f, RED);
DrawCubeWires((Vector3){-4.0f, 0.0f, 2.0f}, 2.0f, 5.0f, 2.0f, GOLD);
DrawCubeWires((Vector3){-4.0f, 0.0f, -2.0f}, 3.0f, 6.0f, 2.0f, MAROON);
DrawSphere((Vector3){-1.0f, 0.0f, -2.0f}, 1.0f, GREEN);
DrawSphereWires((Vector3){1.0f, 0.0f, 2.0f}, 2.0f, 16, 16, LIME);
DrawCylinder((Vector3){4.0f, 0.0f, -2.0f}, 1.0f, 2.0f, 3.0f, 4, SKYBLUE);
DrawCylinderWires((Vector3){4.0f, 0.0f, -2.0f}, 1.0f, 2.0f, 3.0f, 4, DARKBLUE);
DrawCylinderWires((Vector3){4.5f, -1.0f, 2.0f}, 1.0f, 1.0f, 2.0f, 6, BROWN);
DrawCylinder((Vector3){1.0f, 0.0f, -4.0f}, 0.0f, 1.5f, 3.0f, 8, GOLD);
DrawCylinderWires((Vector3){1.0f, 0.0f, -4.0f}, 0.0f, 1.5f, 3.0f, 8, PINK);
DrawGrid(10, 1.0f); // Draw a grid
EndMode3D();
DrawText("Press Spacebar to switch camera type", 10, GetScreenHeight() - 30, 20, DARKGRAY);
if (camera.projection == CAMERA_ORTHOGRAPHIC) DrawText("ORTHOGRAPHIC", 10, 40, 20, BLACK);
else if (camera.projection == CAMERA_PERSPECTIVE) DrawText("PERSPECTIVE", 10, 40, 20, BLACK);
DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}