梯度似乎有问题,我无法弄清楚。它应该填满整个窗口,但我在屏幕右侧缺少一个三角形。关于如何修复它有什么想法吗?
正如之前所说,矩形的右侧缺少一个三角形。正如我所提到的,我已经尝试了很多次,用谷歌搜索(如果有什么我错过了),甚至尝试使用 ChatGPT 来实现。以下是现在使用的代码:
void setBackgroundGradient(sf::RenderWindow& window) {
// Create a vertex array for the background
sf::VertexArray background(sf::Quads, 4);
// Define the gradient colors
sf::Color colorLeft(117, 58, 136);
sf::Color colorRight(174, 50, 111);
// Set the gradient colors and positions for each vertex
for (int i = 0; i < 4; ++i) {
// Set the position for each vertex
background[i].position = sf::Vector2f((i % 2) * window.getSize().x, (i / 2) * window.getSize().y);
// Interpolate color between colorLeft and colorRight based on the x-position percentage
float factor = background[i].position.x / window.getSize().x;
background[i].color = sf::Color(
static_cast<sf::Uint8>((1.0f - factor) * colorLeft.r + factor * colorRight.r),
static_cast<sf::Uint8>((1.0f - factor) * colorLeft.g + factor * colorRight.g),
static_cast<sf::Uint8>((1.0f - factor) * colorLeft.b + factor * colorRight.b)
);
}
window.draw(background);
}
void createWindow() {
sf::RenderWindow window{ sf::VideoMode(1200,800), "TGUI window with SFML"}; //{1200, 800}
//A Gui Object that works with Sfml window.
tgui::GuiSFML gui{ window };
runGUI(gui, window);
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
gui.handleEvent(event);
if (event.type == sf::Event::Closed)
window.close();
}
//Set background color and display window
//window.clear(sf::Color(50,50,50));
window.clear();
setBackgroundGradient(window);
gui.draw();
window.display();
}
}
这是我现在得到的结果: [图片][1] [1]:https://i.stack.imgur.com/jV8c4.png
通过手动设置 4 个索引中的每一个来自行修复:
// Define the gradient colors
sf::Color colorLeft(117, 58, 136);
sf::Color colorRight(174, 50, 111);
// Set the gradient colors and positions for each vertex
for (int i = 0; i < 4; ++i) {
// Set the position for each vertex
background[0].position = sf::Vector2f(0, 0);
background[1].position = sf::Vector2f(window.getSize().x, 0);
background[2].position = sf::Vector2f(window.getSize().x, window.getSize().y);
background[3].position = sf::Vector2f(0, window.getSize().y);
// Interpolate color between colorLeft and colorRight based on the x-position percentage
float factor = background[i].position.x / window.getSize().x;
background[i].color = sf::Color(
static_cast<sf::Uint8>((1.0f - factor) * colorLeft.r + factor * colorRight.r),
static_cast<sf::Uint8>((1.0f - factor) * colorLeft.g + factor * colorRight.g),
static_cast<sf::Uint8>((1.0f - factor) * colorLeft.b + factor * colorRight.b)
);
}
window.draw(background);