From 55d1cdb0feb935c62398185e2d176792a82f7692 Mon Sep 17 00:00:00 2001 From: Bernie Innocenti Date: Sun, 11 Jun 2017 21:05:27 -0400 Subject: [PATCH] Implement fractal pulsing on music clap hit. --- main.rs | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/main.rs b/main.rs index 9500a78..769c16f 100644 --- a/main.rs +++ b/main.rs @@ -6,7 +6,7 @@ extern crate glium; extern crate glutin; extern crate image; -use cgmath::{Euler, Matrix4, Rad, Vector3, Zero}; +use cgmath::{Euler, Matrix4, Rad, SquareMatrix, Vector3, Vector4, Zero}; use cgmath::conv::array4x4; use glium::{DisplayBuild, Surface}; use glutin::ElementState::Pressed; @@ -133,8 +133,17 @@ fn main() { let mut accum_draw_time = Duration::new(0, 0); let mut accum_idle_time = Duration::new(0, 0); + let mut last_hit = 0.0f32; + let mut hit_time = 0.0f32; set_main_loop_callback(|| { - let _ = sound::hit_event(&mut soundplayer); + let new_hit = sound::hit_event(&mut soundplayer); + if new_hit != last_hit { + hit_time = t; + } + last_hit = new_hit; + let hit_delta = t - hit_time; + let hit_scale = 1. / (1. + hit_delta * hit_delta * 15.0) + 1.; + camera.update(); let perspview = camera.get_perspview(); @@ -154,8 +163,10 @@ fn main() { let rotation = Matrix4::from( Euler { x: Rad(t.sin() / 3.), y: Rad(t.sin() / 2.), z: Rad(t / 1.5)}); let z_trans = -3.0; // Send the model back a little bit so it fits the screen. + let scale = + Matrix4::from_diagonal(Vector4::new(hit_scale, hit_scale, hit_scale, 1.0)); let model2 = - Matrix4::from_translation(Vector3::unit_z() * z_trans) * rotation; + Matrix4::from_translation(Vector3::unit_z() * z_trans) * rotation * scale; let model = array4x4(model2); // Draw the bounding box before the fractal, when the Z-buffer is still clear, -- 2.25.1