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|
//! Geometric Shapes | U+25A0...U+25FF
//! https://en.wikipedia.org/wiki/Geometric_Shapes_(Unicode_block)
//!
//! ■ □ ▢ ▣ ▤ ▥ ▦ ▧ ▨ ▩ ▪ ▫ ▬ ▭ ▮ ▯
//! ▰ ▱ ▲ △ ▴ ▵ ▶ ▷ ▸ ▹ ► ▻ ▼ ▽ ▾ ▿
//! ◀ ◁ ◂ ◃ ◄ ◅ ◆ ◇ ◈ ◉ ◊ ○ ◌ ◍ ◎ ●
//! ◐ ◑ ◒ ◓ ◔ ◕ ◖ ◗ ◘ ◙ ◚ ◛ ◜ ◝ ◞ ◟
//! ◠ ◡ ◢ ◣ ◤ ◥ ◦ ◧ ◨ ◩ ◪ ◫ ◬ ◭ ◮ ◯
//! ◰ ◱ ◲ ◳ ◴ ◵ ◶ ◷ ◸ ◹ ◺ ◻ ◼ ◽︎◾︎◿
//!
//! Only a subset of this block is viable for sprite drawing; filling
//! out this file to have full coverage of this block is not the goal.
//!
const std = @import("std");
const Allocator = std.mem.Allocator;
const common = @import("common.zig");
const Thickness = common.Thickness;
const Corner = common.Corner;
const Shade = common.Shade;
const font = @import("../../main.zig");
/// ◢ ◣ ◤ ◥
pub fn draw25E2_25E5(
cp: u32,
canvas: *font.sprite.Canvas,
width: u32,
height: u32,
metrics: font.Metrics,
) !void {
_ = width;
_ = height;
switch (cp) {
// ◢
0x25e2 => try cornerTriangleShade(metrics, canvas, .br, .on),
// ◣
0x25e3 => try cornerTriangleShade(metrics, canvas, .bl, .on),
// ◤
0x25e4 => try cornerTriangleShade(metrics, canvas, .tl, .on),
// ◥
0x25e5 => try cornerTriangleShade(metrics, canvas, .tr, .on),
else => unreachable,
}
}
/// ◸ ◹ ◺
pub fn draw25F8_25FA(
cp: u32,
canvas: *font.sprite.Canvas,
width: u32,
height: u32,
metrics: font.Metrics,
) !void {
_ = width;
_ = height;
switch (cp) {
// ◸
0x25f8 => try cornerTriangleOutline(metrics, canvas, .tl),
// ◹
0x25f9 => try cornerTriangleOutline(metrics, canvas, .tr),
// ◺
0x25fa => try cornerTriangleOutline(metrics, canvas, .bl),
else => unreachable,
}
}
/// ◿
pub fn draw25FF(
cp: u32,
canvas: *font.sprite.Canvas,
width: u32,
height: u32,
metrics: font.Metrics,
) !void {
_ = cp;
_ = width;
_ = height;
try cornerTriangleOutline(metrics, canvas, .br);
}
pub fn cornerTriangleShade(
metrics: font.Metrics,
canvas: *font.sprite.Canvas,
comptime corner: Corner,
comptime shade: Shade,
) !void {
const float_width: f64 = @floatFromInt(metrics.cell_width);
const float_height: f64 = @floatFromInt(metrics.cell_height);
const x0, const y0, const x1, const y1, const x2, const y2 =
switch (corner) {
.tl => .{
0,
0,
0,
float_height,
float_width,
0,
},
.tr => .{
0,
0,
float_width,
float_height,
float_width,
0,
},
.bl => .{
0,
0,
0,
float_height,
float_width,
float_height,
},
.br => .{
0,
float_height,
float_width,
float_height,
float_width,
0,
},
};
var path = canvas.staticPath(5); // nodes.len = 0
path.moveTo(x0, y0); // +1, nodes.len = 1
path.lineTo(x1, y1); // +1, nodes.len = 2
path.lineTo(x2, y2); // +1, nodes.len = 3
path.close(); // +2, nodes.len = 5
try canvas.fillPath(
path.wrapped_path,
.{},
@enumFromInt(@intFromEnum(shade)),
);
}
pub fn cornerTriangleOutline(
metrics: font.Metrics,
canvas: *font.sprite.Canvas,
comptime corner: Corner,
) !void {
const float_thick: f64 = @floatFromInt(Thickness.light.height(metrics.box_thickness));
const float_width: f64 = @floatFromInt(metrics.cell_width);
const float_height: f64 = @floatFromInt(metrics.cell_height);
const x0, const y0, const x1, const y1, const x2, const y2 =
switch (corner) {
.tl => .{
0,
0,
0,
float_height,
float_width,
0,
},
.tr => .{
0,
0,
float_width,
float_height,
float_width,
0,
},
.bl => .{
0,
0,
0,
float_height,
float_width,
float_height,
},
.br => .{
0,
float_height,
float_width,
float_height,
float_width,
0,
},
};
var path = canvas.staticPath(5); // nodes.len = 0
path.moveTo(x0, y0); // +1, nodes.len = 1
path.lineTo(x1, y1); // +1, nodes.len = 2
path.lineTo(x2, y2); // +1, nodes.len = 3
path.close(); // +2, nodes.len = 5
try canvas.innerStrokePath(path.wrapped_path, .{
.line_cap_mode = .butt,
.line_width = float_thick,
}, .on);
}
|
