/******************************************************************************************* * * raylib [models] example - Draw textured cube * * Example originally created with raylib 4.5, last time updated with raylib 4.5 * * 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) 2022-2024 Ramon Santamaria (@raysan5) * ********************************************************************************************/ #include "raylib.h" #include "rlgl.h" // Required to define vertex data (immediate-mode style) //------------------------------------------------------------------------------------ // Custom Functions Declaration //------------------------------------------------------------------------------------ void DrawCubeTexture(Texture2D texture, Vector3 position, float width, float height, float length, Color color); // Draw cube textured void DrawCubeTextureRec(Texture2D texture, Rectangle source, Vector3 position, float width, float height, float length, Color color); // Draw cube with a region of a texture //------------------------------------------------------------------------------------ // Program main entry point //------------------------------------------------------------------------------------ int main(void) { // Initialization //-------------------------------------------------------------------------------------- const int screenWidth = 800; const int screenHeight = 450; InitWindow(screenWidth, screenHeight, "raylib [models] example - draw cube texture"); // Define the camera to look into our 3d world Camera camera = { 0 }; camera.position = (Vector3){ 0.0f, 10.0f, 10.0f }; camera.target = (Vector3){ 0.0f, 0.0f, 0.0f }; camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; camera.fovy = 45.0f; camera.projection = CAMERA_PERSPECTIVE; // Load texture to be applied to the cubes sides Texture2D texture = LoadTexture("resources/cubicmap_atlas.png"); 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 //---------------------------------------------------------------------------------- // TODO: Update your variables here //---------------------------------------------------------------------------------- // Draw //---------------------------------------------------------------------------------- BeginDrawing(); ClearBackground(RAYWHITE); BeginMode3D(camera); // Draw cube with an applied texture DrawCubeTexture(texture, (Vector3){ -2.0f, 2.0f, 0.0f }, 2.0f, 4.0f, 2.0f, WHITE); // Draw cube with an applied texture, but only a defined rectangle piece of the texture DrawCubeTextureRec(texture, (Rectangle){ 0.0f, texture.height/2.0f, texture.width/2.0f, texture.height/2.0f }, (Vector3){ 2.0f, 1.0f, 0.0f }, 2.0f, 2.0f, 2.0f, WHITE); DrawGrid(10, 1.0f); // Draw a grid EndMode3D(); DrawFPS(10, 10); EndDrawing(); //---------------------------------------------------------------------------------- } // De-Initialization //-------------------------------------------------------------------------------------- UnloadTexture(texture); // Unload texture CloseWindow(); // Close window and OpenGL context //-------------------------------------------------------------------------------------- return 0; } //------------------------------------------------------------------------------------ // Custom Functions Definition //------------------------------------------------------------------------------------ // Draw cube textured // NOTE: Cube position is the center position void DrawCubeTexture(Texture2D texture, Vector3 position, float width, float height, float length, Color color) { float x = position.x; float y = position.y; float z = position.z; // Set desired texture to be enabled while drawing following vertex data rlSetTexture(texture.id); // Vertex data transformation can be defined with the commented lines, // but in this example we calculate the transformed vertex data directly when calling rlVertex3f() //rlPushMatrix(); // NOTE: Transformation is applied in inverse order (scale -> rotate -> translate) //rlTranslatef(2.0f, 0.0f, 0.0f); //rlRotatef(45, 0, 1, 0); //rlScalef(2.0f, 2.0f, 2.0f); rlBegin(RL_QUADS); rlColor4ub(color.r, color.g, color.b, color.a); // Front Face rlNormal3f(0.0f, 0.0f, 1.0f); // Normal Pointing Towards Viewer rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left Of The Texture and Quad rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right Of The Texture and Quad rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Right Of The Texture and Quad rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left Of The Texture and Quad // Back Face rlNormal3f(0.0f, 0.0f, - 1.0f); // Normal Pointing Away From Viewer rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Right Of The Texture and Quad rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Right Of The Texture and Quad rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Left Of The Texture and Quad rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Left Of The Texture and Quad // Top Face rlNormal3f(0.0f, 1.0f, 0.0f); // Normal Pointing Up rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left Of The Texture and Quad rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x - width/2, y + height/2, z + length/2); // Bottom Left Of The Texture and Quad rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x + width/2, y + height/2, z + length/2); // Bottom Right Of The Texture and Quad rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right Of The Texture and Quad // Bottom Face rlNormal3f(0.0f, - 1.0f, 0.0f); // Normal Pointing Down rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x - width/2, y - height/2, z - length/2); // Top Right Of The Texture and Quad rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x + width/2, y - height/2, z - length/2); // Top Left Of The Texture and Quad rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Left Of The Texture and Quad rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Right Of The Texture and Quad // Right face rlNormal3f(1.0f, 0.0f, 0.0f); // Normal Pointing Right rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right Of The Texture and Quad rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right Of The Texture and Quad rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Left Of The Texture and Quad rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Left Of The Texture and Quad // Left Face rlNormal3f( - 1.0f, 0.0f, 0.0f); // Normal Pointing Left rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Left Of The Texture and Quad rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Right Of The Texture and Quad rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Right Of The Texture and Quad rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left Of The Texture and Quad rlEnd(); //rlPopMatrix(); rlSetTexture(0); } // Draw cube with texture piece applied to all faces void DrawCubeTextureRec(Texture2D texture, Rectangle source, Vector3 position, float width, float height, float length, Color color) { float x = position.x; float y = position.y; float z = position.z; float texWidth = (float)texture.width; float texHeight = (float)texture.height; // Set desired texture to be enabled while drawing following vertex data rlSetTexture(texture.id); // We calculate the normalized texture coordinates for the desired texture-source-rectangle // It means converting from (tex.width, tex.height) coordinates to [0.0f, 1.0f] equivalent rlBegin(RL_QUADS); rlColor4ub(color.r, color.g, color.b, color.a); // Front face rlNormal3f(0.0f, 0.0f, 1.0f); rlTexCoord2f(source.x/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x - width/2, y - height/2, z + length/2); rlTexCoord2f((source.x + source.width)/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x + width/2, y - height/2, z + length/2); rlTexCoord2f((source.x + source.width)/texWidth, source.y/texHeight); rlVertex3f(x + width/2, y + height/2, z + length/2); rlTexCoord2f(source.x/texWidth, source.y/texHeight); rlVertex3f(x - width/2, y + height/2, z + length/2); // Back face rlNormal3f(0.0f, 0.0f, - 1.0f); rlTexCoord2f((source.x + source.width)/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x - width/2, y - height/2, z - length/2); rlTexCoord2f((source.x + source.width)/texWidth, source.y/texHeight); rlVertex3f(x - width/2, y + height/2, z - length/2); rlTexCoord2f(source.x/texWidth, source.y/texHeight); rlVertex3f(x + width/2, y + height/2, z - length/2); rlTexCoord2f(source.x/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x + width/2, y - height/2, z - length/2); // Top face rlNormal3f(0.0f, 1.0f, 0.0f); rlTexCoord2f(source.x/texWidth, source.y/texHeight); rlVertex3f(x - width/2, y + height/2, z - length/2); rlTexCoord2f(source.x/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x - width/2, y + height/2, z + length/2); rlTexCoord2f((source.x + source.width)/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x + width/2, y + height/2, z + length/2); rlTexCoord2f((source.x + source.width)/texWidth, source.y/texHeight); rlVertex3f(x + width/2, y + height/2, z - length/2); // Bottom face rlNormal3f(0.0f, - 1.0f, 0.0f); rlTexCoord2f((source.x + source.width)/texWidth, source.y/texHeight); rlVertex3f(x - width/2, y - height/2, z - length/2); rlTexCoord2f(source.x/texWidth, source.y/texHeight); rlVertex3f(x + width/2, y - height/2, z - length/2); rlTexCoord2f(source.x/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x + width/2, y - height/2, z + length/2); rlTexCoord2f((source.x + source.width)/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x - width/2, y - height/2, z + length/2); // Right face rlNormal3f(1.0f, 0.0f, 0.0f); rlTexCoord2f((source.x + source.width)/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x + width/2, y - height/2, z - length/2); rlTexCoord2f((source.x + source.width)/texWidth, source.y/texHeight); rlVertex3f(x + width/2, y + height/2, z - length/2); rlTexCoord2f(source.x/texWidth, source.y/texHeight); rlVertex3f(x + width/2, y + height/2, z + length/2); rlTexCoord2f(source.x/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x + width/2, y - height/2, z + length/2); // Left face rlNormal3f( - 1.0f, 0.0f, 0.0f); rlTexCoord2f(source.x/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x - width/2, y - height/2, z - length/2); rlTexCoord2f((source.x + source.width)/texWidth, (source.y + source.height)/texHeight); rlVertex3f(x - width/2, y - height/2, z + length/2); rlTexCoord2f((source.x + source.width)/texWidth, source.y/texHeight); rlVertex3f(x - width/2, y + height/2, z + length/2); rlTexCoord2f(source.x/texWidth, source.y/texHeight); rlVertex3f(x - width/2, y + height/2, z - length/2); rlEnd(); rlSetTexture(0); }