raylib/examples/textures/textures_image_rotate.c

84 lines
3.2 KiB
C

/*******************************************************************************************
*
* raylib [textures] example - Image Rotation
*
* Example originally created with raylib 1.0, last time updated with raylib 1.0
*
* 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) 2014-2024 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#define NUM_TEXTURES 3
//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture rotation");
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
Image image45 = LoadImage("resources/raylib_logo.png");
Image image90 = LoadImage("resources/raylib_logo.png");
Image imageNeg90 = LoadImage("resources/raylib_logo.png");
ImageRotate(&image45, 45);
ImageRotate(&image90, 90);
ImageRotate(&imageNeg90, -90);
Texture2D textures[NUM_TEXTURES] = { 0 };
textures[0] = LoadTextureFromImage(image45);
textures[1] = LoadTextureFromImage(image90);
textures[2] = LoadTextureFromImage(imageNeg90);
int currentTexture = 0;
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 (IsMouseButtonPressed(MOUSE_BUTTON_LEFT) || IsKeyPressed(KEY_RIGHT))
{
currentTexture = (currentTexture + 1)%NUM_TEXTURES; // Cycle between the textures
}
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
DrawTexture(textures[currentTexture], screenWidth/2 - textures[currentTexture].width/2, screenHeight/2 - textures[currentTexture].height/2, WHITE);
DrawText("Press LEFT MOUSE BUTTON to rotate the image clockwise", 250, 420, 10, DARKGRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
for (int i = 0; i < NUM_TEXTURES; i++) UnloadTexture(textures[i]);
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}