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0372-Raylib-调色板

news 2026/8/8 8:17:10

环境

Time 2024-02-27
Zig 0.12.0-dev.2790+fc7dd3e28
WSL-Ubuntu 22.04.3 LTS
Raylib 5.0

前言

说明

参考资料：

https://www.raylib.com/examples.html

目标

渲染一个调色板。

main.zig

const std = @import("std");
const ray = @import("raylib.zig");pub fn main() !void {const screenWidth: c_int = 800;const screenHeight: c_int = 450;ray.InitWindow(screenWidth, screenHeight, "raylib [shapes] example");defer ray.CloseWindow();ray.SetTargetFPS(60);const colors = [_]ray.Color{ray.DARKGRAY, ray.MAROON,     ray.ORANGE,    ray.DARKGREEN, //ray.DARKBLUE, ray.DARKPURPLE, ray.DARKBROWN, ray.GRAY,ray.RED,      ray.GOLD,       ray.LIME,      ray.BLUE,ray.VIOLET,   ray.BROWN,      ray.LIGHTGRAY, ray.PINK,ray.YELLOW,   ray.GREEN,      ray.SKYBLUE,   ray.PURPLE,ray.BEIGE,};const colorNames = [_][*c]const u8{"DARKGRAY",   "MAROON",    "ORANGE", "DARKGREEN", "DARKBLUE", //"DARKPURPLE", "DARKBROWN", "GRAY",   "RED",       "GOLD","LIME",       "BLUE",      "VIOLET", "BROWN",     "LIGHTGRAY","PINK",       "YELLOW",    "GREEN",  "SKYBLUE",   "PURPLE","BEIGE",};var colorsRecs: [colors.len]ray.Rectangle = undefined; // Rectangles array// Fills colorsRecs data (for every rectangle)for (0..colors.len) |i| {colorsRecs[i].x = 20.0 + 110.0 * @as(f32, @floatFromInt(@mod(i, 7)));colorsRecs[i].y = 80.0 + 110.0 * @as(f32, @floatFromInt(i / 7));colorsRecs[i].width = 100.0;colorsRecs[i].height = 100.0;}var colorState: [colors.len]bool = std.mem.zeroes([colors.len]bool);var mousePoint = ray.Vector2{};while (!ray.WindowShouldClose()) {// UpdatemousePoint = ray.GetMousePosition();for (&colorState, colorsRecs) |*state, recs| {state.* = ray.CheckCollisionPointRec(mousePoint, recs);}// Drawray.BeginDrawing();defer ray.EndDrawing();ray.ClearBackground(ray.RAYWHITE);ray.DrawText("raylib colors palette", 28, 42, 20, ray.BLACK);ray.DrawText("press SPACE to see all colors", ray.GetScreenWidth() - 180, ray.GetScreenHeight() - 40, 10, ray.GRAY);for (0..colors.len) |i| // Draw all rectangles{const hover: f32 = if (colorState[i]) 0.6 else 1.0;ray.DrawRectangleRec(colorsRecs[i], ray.Fade(colors[i], hover));if (ray.IsKeyDown(ray.KEY_SPACE) or colorState[i]) {const x: c_int = @intFromFloat(colorsRecs[i].x);const y: c_int = @intFromFloat(colorsRecs[i].y);const height: c_int = @intFromFloat(colorsRecs[i].height);const width: c_int = @intFromFloat(colorsRecs[i].width);ray.DrawRectangle(x, y + height - 26, width, 20, ray.BLACK);ray.DrawRectangleLinesEx(colorsRecs[i], 6, ray.Fade(ray.BLACK, 0.3));const textX = x + width - ray.MeasureText(colorNames[i], 10) - 12;ray.DrawText(colorNames[i], textX, y + height - 20, 10, colors[i]);}}}
}