From cd05828923f5241b1d71ad211cce5c8605de38fd Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sat, 15 May 2021 01:56:06 +0200
Subject: lole

---
 .gitignore     |   6 ++++++
 flag.glsl      |  21 +++++++++++++++++++
 flag.png       | Bin 0 -> 92398 bytes
 project.conf   |   8 +++++++
 src/main.cpp   |  65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/main.cpp |   7 +++++++
 6 files changed, 107 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 flag.glsl
 create mode 100644 flag.png
 create mode 100644 project.conf
 create mode 100644 src/main.cpp
 create mode 100644 tests/main.cpp

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7cbd65d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+# Compiled sibs files
+sibs-build/
+compile_commands.json
+tests/sibs-build/
+tests/compile_commands.json
+frames/
diff --git a/flag.glsl b/flag.glsl
new file mode 100644
index 0000000..f52c2f2
--- /dev/null
+++ b/flag.glsl
@@ -0,0 +1,21 @@
+uniform sampler2D texture;
+uniform float iTime;
+
+void main() {
+    vec2 uv = gl_TexCoord[0].xy;
+    float sine = sin(uv.x*24.0 - iTime*7.0);
+    float offset = sine*0.04;
+    uv.x -= 0.25;
+    uv.x += offset*0.5*uv.x;
+    uv.y += offset*uv.x*2.0 - 0.25;
+
+    vec4 col = texture2D(texture, uv*2.0);
+    //col.rgb *= (1.0 + (0.0 + 0.5*(offset+0.04)*50.0));
+    col.rgb *= 0.9;
+    col.rgb += 0.1 * -sine;
+
+    if(uv.x < 0.0 || uv.x > 0.5 || uv.y < 0.0 || uv.y > 0.5)
+        col.a = 0.0;
+
+    gl_FragColor = col;
+}
\ No newline at end of file
diff --git a/flag.png b/flag.png
new file mode 100644
index 0000000..0564dec
Binary files /dev/null and b/flag.png differ
diff --git a/project.conf b/project.conf
new file mode 100644
index 0000000..0c86cd9
--- /dev/null
+++ b/project.conf
@@ -0,0 +1,8 @@
+[package]
+name = "flag-maker"
+type = "executable"
+version = "0.1.0"
+platforms = ["posix"]
+
+[dependencies]
+sfml-graphics = "2"
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..5876efc
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,65 @@
+#include <SFML/Graphics.hpp>
+
+int main() {
+    sf::Texture texture;
+    if(!texture.loadFromFile("flag.png"))
+        return 1;
+
+    texture.setSmooth(true);
+
+    sf::Vector2u window_size = texture.getSize();
+    sf::RenderWindow window(sf::VideoMode(window_size.x, window_size.y), "SFML works!", 0);
+    window.setVerticalSyncEnabled(true);
+    window.setFramerateLimit(24);
+
+    sf::Shader shader;
+    if(!shader.loadFromFile("flag.glsl", sf::Shader::Type::Fragment))
+        return 1;
+
+    shader.setUniform("texture", texture);
+
+    sf::Vertex vertex[4];
+    vertex[0] = sf::Vertex(sf::Vector2f(0.0f, 0.0f), sf::Color::White, sf::Vector2f(0.0f, 0.0f));
+    vertex[1] = sf::Vertex(sf::Vector2f(window_size.x, 0.0f), sf::Color::White, sf::Vector2f(1.0f, 0.0f));
+    vertex[2] = sf::Vertex(sf::Vector2f(window_size.x, window_size.y), sf::Color::White, sf::Vector2f(1.0f, 1.0f));
+    vertex[3] = sf::Vertex(sf::Vector2f(0.0f, window_size.y), sf::Color::White, sf::Vector2f(0.0f, 1.0f));
+
+    sf::Texture texture_output;
+    texture_output.create(texture.getSize().x, texture.getSize().y);
+
+    int flag_start_x = texture.getSize().x*0.2;
+    int flag_start_y = texture.getSize().y*0.2;
+    int flag_width = texture.getSize().x*0.6;
+    int flag_height = texture.getSize().y*0.6;
+
+    sf::Image output_image;
+    output_image.create(flag_width, flag_height, sf::Color::Transparent);
+    std::vector<sf::Image> frames;
+
+    sf::Clock timer;
+    while (window.isOpen()) {
+        sf::Event event;
+        while (window.pollEvent(event)) {
+            if (event.type == sf::Event::Closed)
+                window.close();
+        }
+
+        shader.setUniform("iTime", timer.getElapsedTime().asSeconds());
+        window.clear(sf::Color::Transparent);
+        window.draw(vertex, 4, sf::PrimitiveType::Quads, &shader);
+        window.display();
+
+        texture_output.update(window);
+        sf::Image image = texture_output.copyToImage();
+        output_image.copy(image, 0, 0, sf::IntRect(flag_start_x, flag_start_y, flag_width, flag_height), false);
+        frames.push_back(std::move(output_image));
+    }
+
+    system("rm -rf frames/*; mkdir frames");
+    for(size_t i = 0; i < frames.size(); ++i) {
+        frames[i].saveToFile("frames/" + std::to_string(i) + ".png");
+    }
+    system("ffmpeg -i \"frames/%d.png\" -framerate 24 -filter_complex \"fps=24,split=2[palette_in][gif];[palette_in]palettegen[palette_out];[gif]fifo[gif_fifo]; [gif_fifo][palette_out]paletteuse\" -y frames/output.gif");
+
+    return 0;
+}
\ No newline at end of file
diff --git a/tests/main.cpp b/tests/main.cpp
new file mode 100644
index 0000000..9ad80a6
--- /dev/null
+++ b/tests/main.cpp
@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+    printf("hello, world!\n");
+    return 0;
+}
-- 
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