feat: introduce simple font from asteroid game

develop
Ingolf Wagner 2021-04-10 13:33:56 +02:00
parent 65ff198dba
commit 54fa1b222d
Signed by: palo
GPG Key ID: 76BF5F1928B9618B
10 changed files with 371 additions and 32 deletions

192
Cargo.lock generated
View File

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"checksum pdqselect 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ec91767ecc0a0bbe558ce8c9da33c068066c57ecc8bb8477ef8c1ad3ef77c27"
@ -1229,8 +1364,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5894c618ce612a3fa23881b152b608bafb8c56cfc22f434a3ba3120b40f7b587"
"checksum pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)" = "05da548ad6865900e60eaba7f589cc0783590a92e940c26953ff81ddbab2d677"
"checksum ppv-lite86 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
"checksum proc-macro-crate 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "1d6ea3c4595b96363c13943497db34af4460fb474a95c43f4446ad341b8c9785"
"checksum proc-macro-error 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)" = "052b3c9af39c7e5e94245f820530487d19eb285faedcb40e0c3275132293f242"
"checksum proc-macro-error 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
"checksum proc-macro-error-attr 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)" = "d175bef481c7902e63e3165627123fff3502f06ac043d3ef42d08c1246da9253"
"checksum proc-macro-error-attr 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
"checksum proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)" = "ecd45702f76d6d3c75a80564378ae228a85f0b59d2f3ed43c91b4a69eb2ebfc5"
"checksum proc-macro-nested 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "369a6ed065f249a159e06c45752c780bda2fb53c995718f9e484d08daa9eb42e"
"checksum proc-macro2 1.0.26 (registry+https://github.com/rust-lang/crates.io-index)" = "a152013215dca273577e18d2bf00fa862b89b24169fb78c4c95aeb07992c9cec"
@ -1255,6 +1393,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum rustc-demangle 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)" = "6e3bad0ee36814ca07d7968269dd4b7ec89ec2da10c4bb613928d3077083c232"
"checksum rustc-hash 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
"checksum rustversion 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b3bba175698996010c4f6dce5e7f173b6eb781fce25d2cfc45e27091ce0b79f6"
"checksum serde 1.0.125 (registry+https://github.com/rust-lang/crates.io-index)" = "558dc50e1a5a5fa7112ca2ce4effcb321b0300c0d4ccf0776a9f60cd89031171"
"checksum shlex 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7fdf1b9db47230893d76faad238fd6097fd6d6a9245cd7a4d90dbd639536bbd2"
"checksum siphasher 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0b8de496cf83d4ed58b6be86c3a275b8602f6ffe98d3024a869e124147a9a3ac"
"checksum siphasher 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "cbce6d4507c7e4a3962091436e56e95290cb71fa302d0d270e32130b75fbff27"
@ -1264,19 +1403,26 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
"checksum structopt 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "a1bcbed7d48956fcbb5d80c6b95aedb553513de0a1b451ea92679d999c010e98"
"checksum structopt-derive 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "095064aa1f5b94d14e635d0a5684cf140c43ae40a0fd990708d38f5d669e5f64"
"checksum strum 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "57bd81eb48f4c437cadc685403cad539345bf703d78e63707418431cecd4522b"
"checksum strum_macros 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "87c85aa3f8ea653bfd3ddf25f7ee357ee4d204731f6aa9ad04002306f6e2774c"
"checksum svg 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a95656b5b37251de210aa2751d538b6f31ce375bacf725a32223bfa6344e0776"
"checksum svgtypes 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9c536faaff1a10837cfe373142583f6e27d81e96beba339147e77b67c9f260ff"
"checksum syn 1.0.68 (registry+https://github.com/rust-lang/crates.io-index)" = "3ce15dd3ed8aa2f8eeac4716d6ef5ab58b6b9256db41d7e1a0224c2788e8fd87"
"checksum syn-mid 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7be3539f6c128a931cf19dcee741c1af532c7fd387baa739c03dd2e96479338a"
"checksum synstructure 0.12.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b834f2d66f734cb897113e34aaff2f1ab4719ca946f9a7358dba8f8064148701"
"checksum system-deps 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0f3ecc17269a19353b3558b313bba738b25d82993e30d62a18406a24aba4649b"
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"checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
"checksum thiserror 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)" = "e0f4a65597094d4483ddaed134f409b2cb7c1beccf25201a9f73c719254fa98e"
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"checksum threadpool 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d050e60b33d41c19108b32cea32164033a9013fe3b46cbd4457559bfbf77afaa"
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"checksum typenum 1.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
"checksum unicode-segmentation 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e83e153d1053cbb5a118eeff7fd5be06ed99153f00dbcd8ae310c5fb2b22edc0"
"checksum unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
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View File

@ -17,7 +17,7 @@ maintenance = { status = "actively-developed" }
exclude = [ "shell.nix", "default.nix" ]
[dependencies]
cairo-rs = { version = "0.8", features = [ "png", "svg"] }
cairo-rs = { version = "0.9", features = [ "png", "svg" ] }
geo = "0.16"
geo-clipper = "0.4.0"
geo-svg-io = "0.1.1"

View File

@ -37,6 +37,7 @@ fn main() {
context.draw_multipolygon(union);
// intersection
context.save();
context.translate(0.0, 250.);
let intersection = &polygon_a.intersection(&polygon_b, 10.0);
context.draw_multipolygon(intersection);
@ -51,7 +52,6 @@ fn main() {
context.translate(0., 250.);
let difference = &polygon_b.difference(&polygon_a, 10.0);
context.draw_multipolygon(difference);
context.restore();
context.render();
}

47
examples/font.rs Normal file
View File

@ -0,0 +1,47 @@
//! Shows how to use buildin font
use geo::line_string;
use polygon_art::{AsteroidFont, Context, FontDirection};
use FontDirection::{LeftRight, TopDown};
fn main() {
let context = Context::create();
context.save();
context.translate(70., 50.);
// context.scale(8.);
let font = AsteroidFont::new();
let line = font.get_text("Hey there!".to_string(), 12., LeftRight);
for char in line.iter() {
context.draw_line_string(char);
}
context.draw_line_string(&line_string![(x : 0., y:14.), (x: 1000. , y : 14.)]);
context.translate(0.0, 18.);
let line = font.get_text("How are you?".to_string(), 22., LeftRight);
for char in line.iter() {
context.draw_line_string(char);
}
context.translate(0.0, 28.);
let line = font.get_text("Here a bitter text!".to_string(), 50., LeftRight);
for char in line.iter() {
context.draw_line_string(char);
}
context.translate(0.0, 56.);
let line = font.get_text("0123456789".to_string(), 50., LeftRight);
for char in line.iter() {
context.draw_line_string(char);
}
context.restore();
context.translate(30., 50.);
let line = font.get_text("0123456789".to_string(), 30., TopDown);
for char in line.iter() {
context.draw_line_string(char);
}
context.render();
}

View File

@ -43,6 +43,5 @@ fn main() {
renderer.draw_multipolygon(&svg);
}
renderer.restore();
renderer.render();
}

View File

@ -12,6 +12,7 @@ pkgs.mkShell {
clang
llvm
pkg-config
(pkgs.writers.writeBashBin "reformat" ''
for file in `find ${toString ./.} -type f | egrep "\.rs$"`
@ -24,7 +25,8 @@ pkgs.mkShell {
# run this on start
# -----------------
shellHook = ''
export NIX_ENFORCE_PURITY=0
# export NIX_ENFORCE_PURITY=0
# Needed so bindgen can find libclang.so
export LIBCLANG_PATH="${pkgs.llvmPackages.libclang}/lib";
'';

View File

@ -71,6 +71,7 @@ fn main() {
.scale_to_width(ship_length)
.translate_center()
.rotate(rotation as f64);
context.save();
context.translate_center();
context.draw_multipolygon(&ship);
context.restore();

View File

@ -32,6 +32,11 @@ impl Context {
]
}
/// a fall back operation, if you need a function not provided by this struct.
pub fn cairo_context(&self) -> &cairo::Context {
self.render_container.context()
}
pub fn draw_multipolygon(&self, multi_polygon: &MultiPolygon<f64>) {
for polygon in multi_polygon.iter() {
self.draw_polygon(polygon);
@ -39,13 +44,13 @@ impl Context {
}
pub fn draw_polygon(&self, polygon: &Polygon<f64>) {
self.plot_line_string(polygon.exterior());
self.draw_line_string(polygon.exterior());
for interior in polygon.interiors() {
self.plot_line_string(interior);
self.draw_line_string(interior);
}
}
fn plot_line_string(&self, line_string: &LineString<f64>) {
pub fn draw_line_string(&self, line_string: &LineString<f64>) {
let context = self.render_container.context();
let mut init = true;
for point in line_string.clone().into_points() {
@ -64,10 +69,13 @@ impl Context {
self.render_container.context().restore();
}
/// save state to restore later again
pub fn save(&self) {
self.render_container.context().save();
}
/// scale, but line with stays
pub fn scale(&self, factor: f64) {
let context = self.render_container.context();
context.save();
context.scale(factor, factor);
context.set_line_width(1. / factor);
}
@ -80,7 +88,6 @@ impl Context {
/// translate to a position
pub fn translate(&self, tx: f64, ty: f64) {
let context = self.render_container.context();
context.save();
context.translate(tx, ty);
}

133
src/font.rs Normal file
View File

@ -0,0 +1,133 @@
// props to https://trmm.net/Asteroids_font
// https://github.com/osresearch/vst/blob/master/teensyv/asteroids_font.c
use geo::algorithm::translate::Translate;
use geo::{Coordinate, LineString};
use std::collections::HashMap;
pub struct AsteroidFont {
letters: HashMap<char, Vec<Vec<(i32, i32)>>>,
}
impl AsteroidFont {
#[rustfmt::skip]
pub fn new() -> Self {
let mut letters = HashMap::new();
letters.insert('0', vec![vec![(0, 0), (8, 0), (8, 12), (0, 12), (0, 0), (8, 12)]]);
letters.insert('1', vec![vec![(4, 0), (4, 12), (3, 10)]]);
letters.insert('2', vec![vec![(0, 12), (8, 12), (8, 7), (0, 5), (0, 0), (8, 0)]]);
letters.insert('3', vec![vec![(0, 12), (8, 12), (8, 0), (0, 0), ], vec![(0, 6), (8, 6)]]);
letters.insert('4', vec![vec![(0, 12), (0, 6), (8, 6), ], vec![(8, 12), (8, 0)]]);
letters.insert('5', vec![vec![(0, 0), (8, 0), (8, 6), (0, 7), (0, 12), (8, 12)]]);
letters.insert('6', vec![vec![(0, 12), (0, 0), (8, 0), (8, 5), (0, 7)]]);
letters.insert('7', vec![vec![(0, 12), (8, 12), (8, 6), (4, 0)]]);
letters.insert('8', vec![vec![(0, 0), (8, 0), (8, 12), (0, 12), (0, 0), ], vec![(0, 6), (8, 6)]]);
letters.insert('9', vec![vec![(8, 0), (8, 12), (0, 12), (0, 7), (8, 5)]]);
letters.insert(' ', vec![]);
letters.insert('.', vec![vec![(3, 0), (4, 0)]]);
letters.insert(',', vec![vec![(2, 0), (4, 2)]]);
letters.insert('-', vec![vec![(2, 6), (6, 6)]]);
letters.insert('+', vec![vec![(1, 6), (7, 6), ], vec![(4, 9), (4, 3)]]);
letters.insert('!', vec![vec![(4, 0), (3, 2), (5, 2), (4, 0), ], vec![(4, 4), (4, 12)]]);
letters.insert('#', vec![vec![(0, 4), (8, 4), (6, 2), (6, 10), (8, 8), (0, 8), (2, 10), (2, 2)]]);
letters.insert('^', vec![vec![(2, 6), (4, 12), (6, 6)]]);
letters.insert('=', vec![vec![(1, 4), (7, 4), ], vec![(1, 8), (7, 8)]]);
letters.insert('*', vec![vec![(0, 0), (4, 12), (8, 0), (0, 8), (8, 8), (0, 0)]]);
letters.insert('_', vec![vec![(0, 0), (8, 0)]]);
letters.insert('/', vec![vec![(0, 0), (8, 12)]]);
letters.insert('\\', vec![vec![(0, 12), (8, 0)]]);
letters.insert('@', vec![vec![(8, 4), (4, 0), (0, 4), (0, 8), (4, 12), (8, 8), (4, 4), (3, 6)]]);
letters.insert('$', vec![vec![(6, 2), (2, 6), (6, 10), ], vec![(4, 12), (4, 0)]]);
letters.insert('&', vec![vec![(8, 0), (4, 12), (8, 8), (0, 4), (4, 0), (8, 4)]]);
letters.insert('[', vec![vec![(6, 0), (2, 0), (2, 12), (6, 12)]]);
letters.insert(']', vec![vec![(2, 0), (6, 0), (6, 12), (2, 12)]]);
letters.insert('(', vec![vec![(6, 0), (2, 4), (2, 8), (6, 12)]]);
letters.insert(')', vec![vec![(2, 0), (6, 4), (6, 8), (2, 12)]]);
letters.insert('{', vec![vec![(6, 0), (4, 2), (4, 10), (6, 12), ], vec![(2, 6), (4, 6)]]);
letters.insert('}', vec![vec![(4, 0), (6, 2), (6, 10), (4, 12), ], vec![(6, 6), (8, 6)]]);
letters.insert('%', vec![vec![(0, 0), (8, 12), ], vec![(2, 10), (2, 8), ], vec![(6, 4), (6, 2)]]);
letters.insert('<', vec![vec![(6, 0), (2, 6), (6, 12)]]);
letters.insert('>', vec![vec![(2, 0), (6, 6), (2, 12)]]);
letters.insert('|', vec![vec![(4, 0), (4, 5), ], vec![(4, 6), (4, 12)]]);
letters.insert(':', vec![vec![(4, 9), (4, 7), ], vec![(4, 5), (4, 3)]]);
letters.insert(';', vec![vec![(4, 9), (4, 7), ], vec![(4, 5), (1, 2)]]);
letters.insert('"', vec![vec![(2, 10), (2, 6), ], vec![(6, 10), (6, 6)]]);
letters.insert('\'', vec![vec![(2, 6), (6, 10)]]);
letters.insert('`', vec![vec![(2, 10), (6, 6)]]);
letters.insert('~', vec![vec![(0, 4), (2, 8), (6, 4), (8, 8)]]);
letters.insert('?', vec![vec![(0, 8), (4, 12), (8, 8), (4, 4), ], vec![(4, 1), (4, 0)]]);
letters.insert('a', vec![vec![(0, 0), (0, 8), (4, 12), (8, 8), (8, 0), ], vec![(0, 4), (8, 4)]]);
letters.insert('b', vec![vec![(0, 0), (0, 12), (4, 12), (8, 10), (4, 6), (8, 2), (4, 0), (0, 0)]]);
letters.insert('c', vec![vec![(8, 0), (0, 0), (0, 12), (8, 12)]]);
letters.insert('d', vec![vec![(0, 0), (0, 12), (4, 12), (8, 8), (8, 4), (4, 0), (0, 0)]]);
letters.insert('e', vec![vec![(8, 0), (0, 0), (0, 12), (8, 12), ], vec![(0, 6), (6, 6)]]);
letters.insert('f', vec![vec![(0, 0), (0, 12), (8, 12), ], vec![(0, 6), (6, 6)]]);
letters.insert('g', vec![vec![(6, 6), (8, 4), (8, 0), (0, 0), (0, 12), (8, 12)]]);
letters.insert('h', vec![vec![(0, 0), (0, 12), ], vec![(0, 6), (8, 6), ], vec![(8, 12), (8, 0)]]);
letters.insert('i', vec![vec![(0, 0), (8, 0), ], vec![(4, 0), (4, 12), ], vec![(0, 12), (8, 12)]]);
letters.insert('j', vec![vec![(0, 4), (4, 0), (8, 0), (8, 12)]]);
letters.insert('k', vec![vec![(0, 0), (0, 12), ], vec![(8, 12), (0, 6), (6, 0)]]);
letters.insert('l', vec![vec![(8, 0), (0, 0), (0, 12)]]);
letters.insert('m', vec![vec![(0, 0), (0, 12), (4, 8), (8, 12), (8, 0)]]);
letters.insert('n', vec![vec![(0, 0), (0, 12), (8, 0), (8, 12)]]);
letters.insert('o', vec![vec![(0, 0), (0, 12), (8, 12), (8, 0), (0, 0)]]);
letters.insert('p', vec![vec![(0, 0), (0, 12), (8, 12), (8, 6), (0, 5)]]);
letters.insert('q', vec![vec![(0, 0), (0, 12), (8, 12), (8, 4), (0, 0), ], vec![(4, 4), (8, 0)]]);
letters.insert('r', vec![vec![(0, 0), (0, 12), (8, 12), (8, 6), (0, 5), ], vec![(4, 5), (8, 0)]]);
letters.insert('s', vec![vec![(0, 2), (2, 0), (8, 0), (8, 5), (0, 7), (0, 12), (6, 12), (8, 10)]]);
letters.insert('t', vec![vec![(0, 12), (8, 12), ], vec![(4, 12), (4, 0)]]);
letters.insert('u', vec![vec![(0, 12), (0, 2), (4, 0), (8, 2), (8, 12)]]);
letters.insert('v', vec![vec![(0, 12), (4, 0), (8, 12)]]);
letters.insert('w', vec![vec![(0, 12), (2, 0), (4, 4), (6, 0), (8, 12)]]);
letters.insert('x', vec![vec![(0, 0), (8, 12), ], vec![(0, 12), (8, 0)]]);
letters.insert('y', vec![vec![(0, 12), (4, 6), (8, 12), ], vec![(4, 6), (4, 0)]]);
letters.insert('z', vec![vec![(0, 12), (8, 12), (0, 0), (8, 0), ], vec![(2, 6), (6, 6)]]);
AsteroidFont {letters }
}
pub fn get_letter(&self, letter: &char, size: f64) -> Vec<LineString<f64>> {
let letter_coordinates = self.letters.get(&letter.to_ascii_lowercase()).unwrap();
let mut polygons: Vec<LineString<f64>> = Vec::new();
for letter_part in letter_coordinates.iter() {
let coordinates: Vec<Coordinate<f64>> = letter_part
.iter()
.map(|&(x, y)| Coordinate {
x: x as f64 * size / 12.,
y: (12. - y as f64) * size / 12.,
})
.collect();
polygons.push(LineString(coordinates));
}
polygons
}
pub fn get_text(
&self,
text: String,
size: f64,
direction: FontDirection,
) -> Vec<LineString<f64>> {
let mut letters: Vec<LineString<f64>> = Vec::new();
let mut count = 0.;
for char in text.chars() {
let letter = self.get_letter(&char, size);
for character in letter.iter() {
match direction {
FontDirection::LeftRight => {
letters.push(character.translate(count * 10.0 * size / 12., 0.))
}
FontDirection::TopDown => {
letters.push(character.translate(0., count * 14.0 * size / 12.))
}
}
}
count = count + 1.;
}
letters
}
}
pub enum FontDirection {
LeftRight,
TopDown,
}

View File

@ -7,3 +7,7 @@ pub use crate::multipolygon_ext::MultiPolygonExt;
mod svg;
pub use crate::svg::load_multipolygon_from_svg;
pub use crate::svg::load_multipolygon_from_svg_include;
mod font;
pub use crate::font::AsteroidFont;
pub use crate::font::FontDirection;