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Diffstat (limited to 'deps/raylib/examples/models/models_draw_cube_texture.c')
-rw-r--r-- | deps/raylib/examples/models/models_draw_cube_texture.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/deps/raylib/examples/models/models_draw_cube_texture.c b/deps/raylib/examples/models/models_draw_cube_texture.c new file mode 100644 index 0000000..87d83c8 --- /dev/null +++ b/deps/raylib/examples/models/models_draw_cube_texture.c @@ -0,0 +1,245 @@ +/******************************************************************************************* +* +* 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); +}
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