feat(render): Resize vertex buffers and rainbow triangles example

5 files changed, 90 insertions, 55 deletions

diff --git a/examples/render/Cargo.toml b/examples/render-triangles/Cargo.toml
index 3144943..dd2c189 100644
--- a/examples/render/Cargo.toml
+++ b/examples/render-triangles/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "render"
+name = "render-triangles"
 version = "0.1.0"
 authors = ["Oscar <oscar.shrimpton.personal@gmail.com>"]
 edition = "2018"
@@ -11,6 +11,7 @@ stockton-bsp = "2.0.0"
 winit = "0.19.1"
 log = "0.4.0"
 simple_logger = "1.0"
+rand = "0.7"
 
 [target.'cfg(feature = "gl")'.dependencies.stockton-render]
 path = "../../stockton-render"
diff --git a/examples/render-triangles/README.md b/examples/render-triangles/README.md
new file mode 100644
index 0000000..a048662
--- /dev/null
+++ b/examples/render-triangles/README.md
@@ -0,0 +1,3 @@
+# render-triangles
+
+Renders rainbow triangles. Space adds a new random triangle, Escape exits.
\ No newline at end of file
diff --git a/examples/render-triangles/src/main.rs b/examples/render-triangles/src/main.rs
new file mode 100644
index 0000000..08eff03
--- /dev/null
+++ b/examples/render-triangles/src/main.rs
@@ -0,0 +1,85 @@
+// Copyright (C) Oscar Shrimpton 2019  
+
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Renders ./example.bsp
+
+extern crate stockton_types;
+extern crate stockton_bsp;
+extern crate stockton_render;
+extern crate winit;
+extern crate simple_logger;
+extern crate rand;
+
+use stockton_render::draw::{RenderingContext, Tri2};
+use stockton_types::Vector2;
+
+use winit::{Event, WindowEvent, VirtualKeyCode, ElementState};
+use rand::prelude::*;
+
+fn main() {
+
+	simple_logger::init().unwrap();
+
+	// Create the renderer.
+	let mut ctx = RenderingContext::new().unwrap();
+	let mut rng = thread_rng();
+	let mut vertices: Vec<Tri2> = Vec::new();
+	let mut running = true;
+	let mut vertices_dirty = false;
+
+    while running {
+    	ctx.events_loop.poll_events(|event| {
+    		match event {
+		    	// TODO: Handle resize
+		    	Event::WindowEvent {
+		    		event: WindowEvent::KeyboardInput { input,  .. },
+		    		..
+		    	} => match input.state {
+		    		ElementState::Released => match input.virtual_keycode {
+			    		Some(VirtualKeyCode::Escape) => running = false,
+			    		Some(VirtualKeyCode::Space) => {
+			    			vertices.push(Tri2 ([
+			    				Vector2::new(
+			    					rng.gen_range(-1.0, 1.0),
+			    					rng.gen_range(-1.0, 1.0),
+			    					),
+			    				Vector2::new(
+			    					rng.gen_range(-1.0, 1.0),
+			    					rng.gen_range(-1.0, 1.0),
+			    					),
+			    				Vector2::new(
+			    					rng.gen_range(-1.0, 1.0),
+			    					rng.gen_range(-1.0, 1.0),
+			    					)
+		    				]));
+
+			    			vertices_dirty = true;
+			    		},
+			    		_ => ()
+			    	},
+			    	_ => ()
+			    }
+    			_ => ()
+    		}
+    	});
+
+    	if vertices_dirty {
+			ctx.populate_vertices(vertices.as_slice()).unwrap();
+			vertices_dirty = false;    		
+    	}
+
+    	ctx.draw_vertices().unwrap();
+	}
+}
diff --git a/examples/render/13power.bsp b/examples/render/13power.bsp
deleted file mode 100644
index 0885199..0000000
--- a/examples/render/13power.bsp
+++ /dev/null
diff --git a/examples/render/src/main.rs b/examples/render/src/main.rs
deleted file mode 100644
index 308a018..0000000
--- a/examples/render/src/main.rs
+++ /dev/null
@@ -1,54 +0,0 @@
-// Copyright (C) Oscar Shrimpton 2019  
-
-// This program is free software: you can redistribute it and/or modify it
-// under the terms of the GNU General Public License as published by the Free
-// Software Foundation, either version 3 of the License, or (at your option)
-// any later version.
-
-// This program is distributed in the hope that it will be useful, but WITHOUT
-// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-// more details.
-
-// You should have received a copy of the GNU General Public License along
-// with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-//! Renders ./example.bsp
-
-extern crate stockton_types;
-extern crate stockton_bsp;
-extern crate stockton_render;
-extern crate winit;
-extern crate simple_logger;
-
-use stockton_bsp::BSPFile;
-use stockton_render::Renderer;
-use stockton_types::World;
-
-use std::sync::{Arc,RwLock};
-
-fn main() {
-
-	simple_logger::init().unwrap();
-  
-	// Parse the BSP file.
-	let data = include_bytes!("../13power.bsp");
-	let bsp = BSPFile::from_buffer(data).unwrap();
-
-	// Load it into a world.
-	// None of the entities are mapped for simplicity.
-	let world = Arc::new(RwLock::new(World::new(bsp, |_| {
-		None
-	}).unwrap()));
-
-	// Create the renderer.
-	let mut renderer = Renderer::new(world).unwrap();
-
-    loop {
-    	// TODO: Poll Window events
-    	// TODO: Handle resize
-    	// TODO: Simulate world
-
-    	renderer.render_frame().unwrap();
-	}
-}