diff --git a/.gitignore b/.gitignore index 5099aff..3bd18d9 100644 --- a/.gitignore +++ b/.gitignore @@ -1,9 +1,7 @@ *.png -*.json *.svg !pool/**/*.svg -!pool/**/*.png -!pool/**/*.json +!images/**/*.png .idea diff --git a/Cargo.lock b/Cargo.lock index 6ecd8ad..c5ec21a 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -29,6 +29,11 @@ dependencies = [ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)", ] +[[package]] +name = "anyhow" +version = "1.0.40" +source = "registry+https://github.com/rust-lang/crates.io-index" + [[package]] name = "approx" version = "0.3.2" @@ -119,25 +124,26 @@ dependencies = [ [[package]] name = "cairo-rs" -version = "0.8.1" +version = "0.9.1" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)", - "cairo-sys-rs 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)", - "glib 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)", - 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--- a/Cargo.toml +++ b/Cargo.toml @@ -4,8 +4,9 @@ version = "1.0.0" authors = ["Ingolf Wagner "] edition = "2018" + # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html -description = "Convenience library to use geo polygons to create art." +description = "Convenience library to use geo to create art." documentation = "https://github.com/mrVanDalo/polygon-art" homepage = "https://github.com/mrVanDalo/polygon-art" repository = "https://github.com/mrVanDalo/polygon-art" @@ -17,7 +18,7 @@ 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" diff --git a/README.md b/README.md index 0586494..df8f8cb 100644 --- a/README.md +++ b/README.md @@ -1,12 +1,22 @@ -Convenience library to create art using [geo](https://georust.org/) -polygons. +Convenience library to create art using [geo](https://georust.org/). * Creates CLI interface (including random seed management) * renders SVGs and PNG -* comes with helper functions, to make live more convenient. +* comes with helper functions and extensions, to make live more convenient. * load SVGs * scaling +# Asteroids + +asteroids is an example binary which renders an +image inspired by the +[asteroids game from the 1979](https://de.wikipedia.org/wiki/Asteroids). + +![image](./images/asteroids.png) + +run `asteroids --help` to get information. +All binaries created by polygon art have the same +command line interface. # How to run examples diff --git a/default.nix b/default.nix deleted file mode 100644 index 8dce5bb..0000000 --- a/default.nix +++ /dev/null @@ -1,27 +0,0 @@ -{ rustPlatform, fetchgit, stdenv, cairo, ... }: - -rustPlatform.buildRustPackage rec { - name = "image-geneartor-${version}"; - version = "3.0.0"; - # src = ./.; - src = fetchgit{ - url = "https://github.com/mrVanDalo/image-generator"; - rev = "f8c1bf958aeea1808df6baea62eeb2949aa5fe65"; - sha256 = "1swa2i57sdag3zapzx3m9mdarci0xfjczr611320zampw505ai09"; - }; - - cargoSha256 = "07pwds279qc54g5fza805ah2m8jhrdzng7vb1bi24a9ra9ci8s29"; - verifyCargoDeps = true; - - buildInputs = [ cairo ]; - - meta = with stdenv.lib; { - description = - "An image generator unsing entropy and a JSON as configuration."; - homepage = "https://github.com/mrVanDalo/image-generator"; - license = licenses.gplv3; - maintainers = [ maintainers.mrVanDalo ]; - platforms = platforms.all; - }; -} - diff --git a/examples/clipping.rs b/examples/clipping.rs index 8d02833..03e4666 100644 --- a/examples/clipping.rs +++ b/examples/clipping.rs @@ -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(); } diff --git a/examples/font.rs b/examples/font.rs new file mode 100644 index 0000000..6475bdf --- /dev/null +++ b/examples/font.rs @@ -0,0 +1,35 @@ +//! 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.); + + let font = AsteroidFont::new(); + let line = font.get_text("Hey there!".to_string(), 12., LeftRight); + context.draw_multiline_string(&line); + 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); + context.draw_multiline_string(&line); + + context.translate(0.0, 28.); + let line = font.get_text("Here a bitter text!".to_string(), 50., LeftRight); + context.draw_multiline_string(&line); + + context.translate(0.0, 56.); + let line = font.get_text("0123456789".to_string(), 50., LeftRight); + context.draw_multiline_string(&line); + + context.restore(); + context.translate(30., 50.); + let line = font.get_text("0123456789".to_string(), 30., TopDown); + context.draw_multiline_string(&line); + + context.render(); +} diff --git a/examples/svg.rs b/examples/svg.rs index 456f5f1..07f1f71 100644 --- a/examples/svg.rs +++ b/examples/svg.rs @@ -3,16 +3,16 @@ use geo::rotate::RotatePoint; use geo::translate::Translate; use geo::{Coordinate, Point}; -use polygon_art::load_multipolgon_from_svg; use polygon_art::Context; -use polygon_art::MultiPolygonExt; +use polygon_art::TranslateExt; +use polygon_art::{load_multipolygon_from_svg, ScaleExt}; use rand::Rng; fn main() { let mut renderer = Context::create(); let path = "pool/examples/example.svg"; - let svg = load_multipolgon_from_svg(path).expect("couldn't load svg"); + let svg = load_multipolygon_from_svg(path).expect("couldn't load svg"); let item_space = 110.; @@ -43,6 +43,5 @@ fn main() { renderer.draw_multipolygon(&svg); } - renderer.restore(); renderer.render(); } diff --git a/images/asteroids.png b/images/asteroids.png new file mode 100644 index 0000000..43cd6a7 Binary files /dev/null and b/images/asteroids.png differ diff --git a/pool/asteroids/ship1.svg b/pool/asteroids/ship1.svg new file mode 100644 index 0000000..7837460 --- /dev/null +++ b/pool/asteroids/ship1.svg @@ -0,0 +1,34 @@ + + + + + + + image/svg+xml + + + + + + + + + diff --git a/pool/asteroids/ship2.svg b/pool/asteroids/ship2.svg new file mode 100644 index 0000000..580b04c --- /dev/null +++ b/pool/asteroids/ship2.svg @@ -0,0 +1,34 @@ + + + + + + + image/svg+xml + + + + + + + + + diff --git a/pool/asteroids/ship3.svg b/pool/asteroids/ship3.svg new file mode 100644 index 0000000..439e017 --- /dev/null +++ b/pool/asteroids/ship3.svg @@ -0,0 +1,34 @@ + + + + + + + image/svg+xml + + + + + + + + + diff --git a/shell.nix b/shell.nix index bd398cb..c01c489 100644 --- a/shell.nix +++ b/shell.nix @@ -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"; ''; diff --git a/src/bin/asteroids.rs b/src/bin/asteroids.rs new file mode 100644 index 0000000..ff754e1 --- /dev/null +++ b/src/bin/asteroids.rs @@ -0,0 +1,150 @@ +use geo::algorithm::intersects::Intersects; +use geo::algorithm::rotate::Rotate; +use geo::prelude::Translate; +use geo::rotate::RotatePoint; +use geo::LineString; +use geo::{polygon, Coordinate, MultiPolygon, Point, Polygon}; +use geo_clipper::Clipper; +use polygon_art::{load_multipolygon_from_svg_include, Context, MergeExt, ScaleExt}; +use polygon_art::{AsteroidFont, FontDirection, TranslateExt}; +use rand::prelude::StdRng; +use rand::Rng; + +/// A more or less complete example that illustrates various technics +fn main() { + let mut context = Context::create(); + let mut rng = context.gen_rng(); + + let width = context.width; + let height = context.height; + let diagonal = f64::sqrt(width * width + height * height); + + let frame_offset = diagonal * 0.01; + let max_asteroid = (diagonal / 80.) as usize; + + let min_asteroid_size = diagonal / 50.; + let max_asteroid_size = diagonal / 12.; + let ship_length = diagonal / 23.; + let ship_orbit = 3.0; + + let center_point = MultiPolygon(vec![create_asteroid(&mut rng, 8, 2)]) + .scale_to_width(ship_orbit * ship_length) + .translate(width / 2., height / 2.); + + // create asteroid + let mut asteroids: MultiPolygon = MultiPolygon(Vec::new()); + for _ in 0..(max_asteroid * 2) { + let without_orbit = rng.gen_range(min_asteroid_size..max_asteroid_size) as f64; + let with_orbit = without_orbit * 1.32; + let x = rng.gen_range(0..(context.width as i32)) as f64; + let y = rng.gen_range(0..(context.height as i32)) as f64; + let asteroid = MultiPolygon(vec![create_asteroid(&mut rng, 20, 15)]) + .scale_to_width(with_orbit) + .translate(x, y); + + if (!center_point.intersects(&asteroid)) && !asteroids.intersects(&asteroid) { + // asteroids.push(asteroid.scale_to_width(without_orbit)); + asteroids.merge_destructive(&mut asteroid.scale_to_width(without_orbit)) + } + if asteroids.0.len() > max_asteroid { + break; + } + } + + // load ships + let rotation = rng.gen_range(0..360); + let ship_yard = [ + include_str!("../../pool/asteroids/ship1.svg"), + include_str!("../../pool/asteroids/ship2.svg"), + include_str!("../../pool/asteroids/ship3.svg"), + ]; + let chosen_ship = rng.gen_range(0..3); + let raw_ship = load_multipolygon_from_svg_include(ship_yard[chosen_ship]) + .unwrap() + // rotate to scale ship with width + .rotate(90.); + let ship = raw_ship + .scale_to_width(ship_length) + .translate_center() + .rotate(rotation as f64); + context.save(); + context.translate_center(); + context.draw_multipolygon(&ship); + context.restore(); + + // draw score board + let font = AsteroidFont::new(); + let random_seed_string = context.seed.to_string(); + let font_size = 20.; + let (x_font_size, y_font_size) = font.get_text_scale_factor(font_size); + let score_board_letters = random_seed_string.len(); + let window = context.frame(frame_offset, frame_offset, frame_offset, frame_offset); + let window_height = frame_offset + y_font_size; + let window_width = frame_offset + score_board_letters as f64 * x_font_size; + let score_board: Polygon = polygon![(x:0., y:0.), (x: window_width, y:0.), (x: window_width, y: window_height), (x: 0., y: window_height)]; + let score_board_lines = font.get_text(random_seed_string, font_size, FontDirection::LeftRight); + context.save(); + context.translate(frame_offset, frame_offset); + context.draw_multiline_string(&score_board_lines); + context.restore(); + + // draw life board + let life = rng.gen_range(2..7) as f64; + let life_board: Polygon = polygon![ + (x:width, y:0.), + (x: width - frame_offset - life * x_font_size - 3., y:0.), + (x: width - frame_offset - life * x_font_size - 3., y:frame_offset + y_font_size + 3.), + (x: width , y:frame_offset + y_font_size + 3.) + ]; + + let life_ship = raw_ship + .scale_to_width(font_size) + .rotate(-90.) + .translate_center_y() + .translate_top(); + for l in 1..(1 + life as i32) { + context.save(); + context.translate( + width - frame_offset - (x_font_size * l as f64) as f64, + frame_offset, + ); + context.draw_multipolygon(&life_ship); + context.restore(); + } + + // draw window + let window = window.difference(&score_board, 100.); + let window = window.difference(&life_board, 100.); + context.draw_multipolygon(&window); + + // draw asteroids + context.draw_multipolygon(&asteroids.intersection(&window, 100.)); + + // render image + context.render(); +} + +fn create_asteroid(rng: &mut StdRng, subdivisions: i32, radius_randomization: i32) -> Polygon { + let mut asteroid_points: Vec> = Vec::new(); + for _ in 0..subdivisions { + let change = rng.gen_range(0..(radius_randomization * 2)); + asteroid_points.push(Point(Coordinate { + x: 0.0, + y: 100.0 + (change - radius_randomization) as f64, + })); + for point in asteroid_points.iter_mut() { + let (x, y) = point + .rotate_around_point( + 360. / subdivisions as f64, + Point(Coordinate { x: 0., y: 0. }), + ) + .x_y(); + point.set_x(x); + point.set_y(y); + } + } + Polygon::new( + LineString(asteroid_points.iter().map(|point| point.0).collect()), + Vec::new(), + ) +} diff --git a/src/context.rs b/src/context.rs index ab115d7..cdc64eb 100644 --- a/src/context.rs +++ b/src/context.rs @@ -1,6 +1,6 @@ use cairo::Format; use cairo::{ImageSurface, SvgSurface}; -use geo_types::{LineString, MultiPolygon, Polygon}; +use geo::{polygon, LineString, MultiLineString, MultiPolygon, Polygon}; use rand::rngs::StdRng; use rand::{Rng, SeedableRng}; @@ -19,9 +19,25 @@ pub struct Context { pub width: f64, pub line_size: f64, pub pseudo_random_number_generator: Box, + pub seed: u64, } impl Context { + /// generate a frame for the image + pub fn frame(&mut self, left: f64, bottom: f64, right: f64, top: f64) -> Polygon { + polygon![ + (x: left, y: top), + (x: self.width - right, y: top), + (x: self.width - right, y: self.height - bottom), + (x: left , y: self.height - bottom), + ] + } + + /// 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) { for polygon in multi_polygon.iter() { self.draw_polygon(polygon); @@ -29,13 +45,13 @@ impl Context { } pub fn draw_polygon(&self, polygon: &Polygon) { - 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) { + pub fn draw_line_string(&self, line_string: &LineString) { let context = self.render_container.context(); let mut init = true; for point in line_string.clone().into_points() { @@ -48,19 +64,31 @@ impl Context { } context.stroke(); } -} -// cairo facades -impl Context { + pub fn draw_line_strings(&self, line_strings: &Vec>) { + for lines in line_strings { + self.draw_line_string(&lines); + } + } + + pub fn draw_multiline_string(&self, multilinestring: &MultiLineString) { + for line in multilinestring.iter() { + self.draw_line_string(line); + } + } + /// restore state which was saved before by the context pub fn restore(&self) { 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); } @@ -73,7 +101,6 @@ 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); } @@ -81,12 +108,32 @@ impl Context { self.render_container.render(); } + pub fn gen_rng(&mut self) -> StdRng { + StdRng::seed_from_u64(self.pseudo_random_number_generator.gen()) + } + pub fn create() -> Context { let opt = Opt::get_command_line_arguments(); - let height = f64::from(opt.height.clone()); - let width = f64::from(opt.width.clone()); let line_size = opt.line_size.clone(); + let mm = 3.779527547619048; // calculated with inkscape 1587.40157 (px) / 420 (mm) (from a3) + let (mut height, mut width) = match opt.format { + None => (f64::from(opt.height.clone()), f64::from(opt.width.clone())), + Some(format) => match &format[..] { + "a3" => (297. * mm, 420. * mm), + "a4" => (210. * mm, 297. * mm), + "a5" => (148. * mm, 210. * mm), + "x220" => (768., 1366.), + _ => (f64::from(opt.height.clone()), f64::from(opt.width.clone())), + }, + }; + + if opt.orientation == "portrait" { + let cache = height; + height = width; + width = cache; + } + let random_seed = match opt.random_seed { Some(random_seed) => random_seed, None => match opt.random_seed_date { @@ -118,9 +165,8 @@ impl Context { .expect("Can't svg surface"); Box::new(SvgRenderContainer::new(svg_surface, palette)) as Box } else if opt.output_type == "png" { - let png_surface = - ImageSurface::create(Format::Rgb24, opt.width.clone(), opt.height.clone()) - .expect("Can't create png surface"); + let png_surface = ImageSurface::create(Format::Rgb24, width as i32, height as i32) + .expect("Can't create png surface"); Box::new(PngRenderContainer::new( opt.output.to_string_lossy().to_string(), png_surface, @@ -138,6 +184,7 @@ impl Context { line_size, pseudo_random_number_generator: Box::new(rng), render_container, + seed: random_seed, } } } diff --git a/src/context/commandline.rs b/src/context/commandline.rs index f019227..b246a6c 100644 --- a/src/context/commandline.rs +++ b/src/context/commandline.rs @@ -13,13 +13,30 @@ pub struct Opt { pub output: PathBuf, /// define width in pixels - #[structopt(long, default_value = "400")] + #[structopt(long, default_value = "600")] pub width: i32, /// define height in pixels #[structopt(long, default_value = "400")] pub height: i32, + /// use a predefined format + #[structopt( + long, + conflicts_with="height", + conflicts_with="width", + possible_values=&["a3", "a4", "a5", "x220"] + )] + pub format: Option, + + /// change orientation + #[structopt( + long, + default_value="landscape", + possible_values=&["portrait", "landscape"] + )] + pub orientation: String, + /// define line size in pixels, all lines will be this thick #[structopt(long, default_value = "1.0")] pub line_size: f64, diff --git a/src/extensions.rs b/src/extensions.rs new file mode 100644 index 0000000..f2166c7 --- /dev/null +++ b/src/extensions.rs @@ -0,0 +1,3 @@ +pub(crate) mod merge_ext; +pub(crate) mod scale_ext; +pub(crate) mod translate_ext; diff --git a/src/extensions/merge_ext.rs b/src/extensions/merge_ext.rs new file mode 100644 index 0000000..8aab680 --- /dev/null +++ b/src/extensions/merge_ext.rs @@ -0,0 +1,35 @@ +use geo::{LineString, MultiLineString, MultiPolygon}; + +pub trait MergeExt { + /// merge Container object + fn merge(&mut self, other: &Self); + /// merge container object, empty the other object + fn merge_destructive(&mut self, other: &mut Self); +} + +impl MergeExt for LineString { + fn merge(&mut self, other: &Self) { + self.0.append(&mut other.0.clone()); + } + fn merge_destructive(&mut self, other: &mut Self) { + self.0.append(&mut other.0); + } +} + +impl MergeExt for MultiLineString { + fn merge(&mut self, other: &Self) { + self.0.append(&mut other.0.clone()); + } + fn merge_destructive(&mut self, other: &mut Self) { + self.0.append(&mut other.0); + } +} + +impl MergeExt for MultiPolygon { + fn merge(&mut self, other: &Self) { + self.0.append(&mut other.0.clone()); + } + fn merge_destructive(&mut self, other: &mut Self) { + self.0.append(&mut other.0); + } +} diff --git a/src/extensions/scale_ext.rs b/src/extensions/scale_ext.rs new file mode 100644 index 0000000..dfd159f --- /dev/null +++ b/src/extensions/scale_ext.rs @@ -0,0 +1,68 @@ +use crate::extensions::translate_ext::ExplicitBoundingRect; +use geo::algorithm::map_coords::MapCoords; +use geo::algorithm::translate::Translate; +use geo::{CoordinateType, LineString, MultiLineString, MultiPolygon, Polygon}; + +pub trait ExplicitMapCoords { + fn map_coordinates(&self, func: impl Fn(&(T, T)) -> (T, T) + Copy) -> Self; +} + +impl ExplicitMapCoords for LineString { + fn map_coordinates(&self, func: impl Fn(&(T, T)) -> (T, T) + Copy) -> Self { + self.map_coords(func) + } +} + +impl ExplicitMapCoords for MultiLineString { + fn map_coordinates(&self, func: impl Fn(&(T, T)) -> (T, T) + Copy) -> Self { + self.map_coords(func) + } +} + +impl ExplicitMapCoords for MultiPolygon { + fn map_coordinates(&self, func: impl Fn(&(T, T)) -> (T, T) + Copy) -> Self { + self.map_coords(func) + } +} + +impl ExplicitMapCoords for Polygon { + fn map_coordinates(&self, func: impl Fn(&(T, T)) -> (T, T) + Copy) -> Self { + self.map_coords(func) + } +} + +pub trait ScaleExt { + /// scale object + fn scale(&self, scale_x: f64, scale_y: f64) -> Self; + /// scale object to given width (in 1:1 ratio) + fn scale_to_width(&self, size: f64) -> Self; + /// scale object to given height (in 1:1 ratio) + fn scale_to_height(&self, size: f64) -> Self; +} + +impl ScaleExt for V +where + V: ExplicitBoundingRect + ExplicitMapCoords + Translate, +{ + fn scale(&self, scale_x: f64, scale_y: f64) -> Self { + let bounding_rectangle = self.bounding().unwrap(); + let minimum_coordinates = bounding_rectangle.min(); + self.translate(-minimum_coordinates.x, -minimum_coordinates.y) + .map_coordinates(|&(x, y)| (x * scale_x, y * scale_y)) + .translate(minimum_coordinates.x, minimum_coordinates.y) + } + + fn scale_to_width(&self, size: f64) -> Self { + let option = self.bounding().unwrap(); + let diff = f64::abs(option.min().x - option.max().x); + let scale = size / diff; + self.scale(scale, scale) + } + + fn scale_to_height(&self, size: f64) -> Self { + let option = self.bounding().unwrap(); + let diff = f64::abs(option.min().y - option.max().y); + let scale = size / diff; + self.scale(scale, scale) + } +} diff --git a/src/extensions/translate_ext.rs b/src/extensions/translate_ext.rs new file mode 100644 index 0000000..8d43461 --- /dev/null +++ b/src/extensions/translate_ext.rs @@ -0,0 +1,87 @@ +use geo::algorithm::bounding_rect::BoundingRect; +use geo::algorithm::translate::Translate; +use geo::{CoordinateType, LineString, MultiLineString, MultiPolygon, Polygon, Rect}; + +/// wrapper for BoundingRect because of the Output type +pub trait ExplicitBoundingRect +where + T: CoordinateType, +{ + fn bounding(&self) -> Option>; +} + +impl ExplicitBoundingRect for Polygon { + fn bounding(&self) -> Option> { + self.bounding_rect() + } +} + +impl ExplicitBoundingRect for MultiPolygon { + fn bounding(&self) -> Option> { + self.bounding_rect() + } +} + +impl ExplicitBoundingRect for LineString { + fn bounding(&self) -> Option> { + self.bounding_rect() + } +} + +impl ExplicitBoundingRect for MultiLineString { + fn bounding(&self) -> Option> { + self.bounding_rect() + } +} + +/// Translate Extensions +pub trait TranslateExt { + /// translate the object to it's center + fn translate_center(&self) -> Self; + /// translate the object to it's center on the x aches + fn translate_center_x(&self) -> Self; + /// translate the object to it's center on the y aches + fn translate_center_y(&self) -> Self; + /// translate the object, so it touches the y aches + fn translate_left(&self) -> Self; + /// translate the object, so it touches the x aches + fn translate_top(&self) -> Self; +} + +impl TranslateExt for B +where + B: ExplicitBoundingRect + Translate, +{ + fn translate_center(&self) -> Self { + let option = self.bounding().unwrap(); + let y_diff = option.max().y - option.min().y; + let y_shift = y_diff / 2.0; + let x_diff = option.max().x - option.min().x; + let x_shift = x_diff / 2.0; + self.translate(-(option.min().x + x_shift), -(option.min().y + y_shift)) + } + + fn translate_center_x(&self) -> Self { + let option = self.bounding().unwrap(); + let x_diff = option.max().x - option.min().x; + let x_shift = x_diff / 2.0; + self.translate(-(option.min().x + x_shift), 0.0) + } + + fn translate_center_y(&self) -> Self { + let option = self.bounding().unwrap(); + let y_diff = option.max().y - option.min().y; + let y_shift = y_diff / 2.0; + self.translate(0.0, -(option.min().y + y_shift)) + } + + fn translate_left(&self) -> Self { + let bounding = self.bounding().unwrap(); + self.translate(-bounding.min().x, 0.) + } + + fn translate_top(&self) -> Self { + let bounding = self.bounding().unwrap(); + self.translate(0., -bounding.min().y) + } +} diff --git a/src/font.rs b/src/font.rs new file mode 100644 index 0000000..bbc7aa8 --- /dev/null +++ b/src/font.rs @@ -0,0 +1,140 @@ +// 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, MultiLineString}; +use std::collections::HashMap; + +pub struct AsteroidFont { + letters: HashMap>>, +} + +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> { + let letter_coordinates = self.letters.get(&letter.to_ascii_lowercase()).unwrap(); + let mut polygons: Vec> = Vec::new(); + for letter_part in letter_coordinates.iter() { + let coordinates: Vec> = 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 + } + + /// size of space (per letter) + pub fn get_text_scale_factor(&self, size: f64) -> (f64, f64) { + let scale_factor = size / 12.; + (10.2 * scale_factor, 14.2 * scale_factor) + } + + pub fn get_text( + &self, + text: String, + size: f64, + direction: FontDirection, + ) -> MultiLineString { + let mut letters: Vec> = Vec::new(); + let mut count = 0.; + for char in text.chars() { + let letter = self.get_letter(&char, size); + let (x_translate_factor, y_translate_factor) = self.get_text_scale_factor(size); + for character in letter.iter() { + match direction { + FontDirection::LeftRight => { + letters.push(character.translate(count * x_translate_factor, 0.)) + } + FontDirection::TopDown => { + letters.push(character.translate(0., count * y_translate_factor)) + } + } + } + count = count + 1.; + } + MultiLineString(letters) + } +} + +pub enum FontDirection { + LeftRight, + TopDown, +} diff --git a/src/lib.rs b/src/lib.rs index a284a6d..6923347 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -1,8 +1,15 @@ mod context; pub use crate::context::Context; -mod multipolygon_ext; -pub use crate::multipolygon_ext::MultiPolygonExt; +mod extensions; +pub use crate::extensions::merge_ext::MergeExt; +pub use crate::extensions::scale_ext::ScaleExt; +pub use crate::extensions::translate_ext::TranslateExt; mod svg; -pub use crate::svg::load_multipolgon_from_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; diff --git a/src/multipolygon_ext.rs b/src/multipolygon_ext.rs deleted file mode 100644 index f31e86f..0000000 --- a/src/multipolygon_ext.rs +++ /dev/null @@ -1,79 +0,0 @@ -use geo::algorithm::bounding_rect::BoundingRect; -use geo::algorithm::translate::Translate; -use geo::Polygon; -use geo_types::{Coordinate, LineString, MultiPolygon}; - -pub trait MultiPolygonExt { - fn translate_center(&self) -> Self; - fn translate_center_x(&self) -> Self; - fn translate_center_y(&self) -> Self; - fn scale_to_width(&self, size: f64) -> Self; - fn scale(&self, factor: f64) -> Self; -} - -impl MultiPolygonExt for MultiPolygon { - fn translate_center(&self) -> Self { - let option = self.bounding_rect().unwrap(); - let y_diff = option.max().y - option.min().y; - let y_shift = y_diff / 2.0; - let x_diff = option.max().x - option.min().x; - let x_shift = x_diff / 2.0; - self.translate(-(option.min().x + x_shift), -(option.min().y + y_shift)) - } - - fn translate_center_x(&self) -> Self { - let option = self.bounding_rect().unwrap(); - let x_diff = option.max().x - option.min().x; - let x_shift = x_diff / 2.0; - self.translate(-(option.min().x + x_shift), 0.0) - } - - fn translate_center_y(&self) -> Self { - let option = self.bounding_rect().unwrap(); - let y_diff = option.max().y - option.min().y; - let y_shift = y_diff / 2.0; - self.translate(0.0, -(option.min().y + y_shift)) - } - - fn scale_to_width(&self, size: f64) -> Self { - // let ((x_min, y_min), (x_max, _)) = self.get_min_max_rectangle(); - let option = self.bounding_rect().unwrap(); - - let diff = f64::abs(option.min().x - option.max().x); - let scale = size / diff; - self.scale(scale) - } - - fn scale(&self, factor: f64) -> Self { - let bounding_rectangle = self.bounding_rect().unwrap(); - let zeroed_multi_polygons = - self.translate(-bounding_rectangle.min().x, -bounding_rectangle.min().y); - let mut new_polygons: Vec> = Vec::new(); - for polygon in zeroed_multi_polygons.iter() { - // map interiors - let mut interiors: Vec> = Vec::new(); - for interior_line_string in polygon.interiors().to_vec() { - let mut new_line_string: Vec> = Vec::new(); - for point in interior_line_string.into_points() { - new_line_string.push(Coordinate { - x: point.x() * factor, - y: point.y() * factor, - }); - } - interiors.push(LineString::from(new_line_string)); - } - // map exterior - let mut new_line_string: Vec> = Vec::new(); - for point in polygon.exterior().clone().into_points() { - new_line_string.push(Coordinate { - x: point.x() * factor, - y: point.y() * factor, - }); - } - let exterior = LineString::from(new_line_string); - new_polygons.push(Polygon::new(exterior, interiors)); - } - MultiPolygon::from(new_polygons) - .translate(bounding_rectangle.min().x, bounding_rectangle.min().y) - } -} diff --git a/src/svg.rs b/src/svg.rs index 2db2e28..d3b3158 100644 --- a/src/svg.rs +++ b/src/svg.rs @@ -3,12 +3,28 @@ use geo_types::{Coordinate, LineString, MultiPolygon, Polygon}; use std::error::Error; use svg::node::element::tag::Path; use svg::parser::Event; +use svg::Parser; + +/// load a multipolygon dynamically at runtime +pub fn load_multipolygon_from_svg(path: &str) -> Result, Box> { + let mut content = String::new(); + let parser = svg::open(path, &mut content)?; + parse_svg_to_multipolygon(parser) +} + +/// load a multipolygon statically at compiletime +/// with include_str! +pub fn load_multipolygon_from_svg_include( + content: &str, +) -> Result, Box> { + let parser = svg::read(content)?; + parse_svg_to_multipolygon(parser) +} #[allow(non_upper_case_globals)] -pub fn load_multipolgon_from_svg(path: &str) -> Result, Box> { - let mut content = String::new(); +fn parse_svg_to_multipolygon(parser: Parser) -> Result, Box> { let mut result: Vec> = Vec::new(); - for event in svg::open(path, &mut content)? { + for event in parser { match event { Event::Tag(Path, _, attributes) => { let data = attributes.get("d").unwrap();