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⛄ 内容介绍
基于 Matlab模拟烟花满天飞
⛄ 完整代码
function firework
% 烟花烟花满天飞
OldHandle = findobj( 'Type', 'figure', 'Tag', 'FireWork' ) ;
if ishandle(OldHandle)
close(OldHandle) ;
end
% 图形窗口初始化
figure('units','normalized','position',[0.1 0.1 0.8 0.8],...
'menubar','none','name','烟花满天飞',...
'numbertitle','off','color',[0 0 0],'tag','FireWork');
% 烟花炸开前的初始位置
h0 = line(0,0,0,'marker','.',...
'markersize',18,...
'MarkerEdgeColor',[1 1 1],...
'MarkerFaceColor',[1 1 1],...
'color',[0 0 0]);
% 设置坐标系显示属性
axis equal
axis([-50 50 -50 50 0 100])
axis off
view(-42,22)
% 设置参数
rate = 1:-0.01:0;% 颜色衰减率
v0 = 45;% 烟花头初始速度
g = -9.8;% 重力加速度
usedtime = -v0/g;% 烟花头爆炸前所经历时间
zs = v0*usedtime+0.5*g*usedtime^2;%烟花头爆炸前达到的最高高度
theta = rand(250,1)*2*pi;% 各粒子速度的方位角
phi =rand(250,1)*2*pi-pi;% 各粒子速度的仰角
age = 20;% 粒子生存期
% 常用颜色矩阵
colormat = [1.0 0.5 0.5
1.0 0.75 0.5
1.0 1.0 0.5
0.75 1.0 0.5
0.5 1.0 0.5
0.5 1.0 0.75
0.5 1.0 1.0
0.5 0.75 1.0
0.5 0.5 1.0
0.75 0.5 1.0
1.0 0.5 1.0
1.0 0.5 0.75];
% 随机产生各粒子对应的颜色序号
colorid = randsample(12,250,true);
% 粒子对应的颜色矩阵
colormat = colormat(colorid,:);
% 粒子颜色与背景色（夜色）的距离
colordist = sqrt(sum(colormat.^2,2));
v1 = 20; % 粒子的初始速度
k = 1; % 颜色衰减率初始序号
timerA = timer('TimerFcn',@TimerFcnA,...
'executionmode','fixedspacing','Period',0.001);
start(timerA);
h = getappdata(gcf,'HandleParticle');
timerB = timer('TimerFcn',{@TimerFcnB},...
'executionmode','fixedspacing','period',0.001);
%--------------------------------------------------------------------------
% 定时器回调函数（烟花头）
%--------------------------------------------------------------------------
function TimerFcnA(timerA,~)
ta = get(timerA,'TasksExecuted')*0.1;
if ta <= usedtime
z = v0*ta+0.5*g*ta^2;
set(h0,'zdata',z,...
'MarkerEdgeColor',[1 1 1],...
'MarkerFaceColor',[1 1 1])
drawnow
%pause(0.01)
else
delete(h0)
stop(timerA);
x0 = zeros(2,250);
y0 = zeros(2,250);
z0 = zs*ones(2,250);
h = line(x0,y0,z0,'marker','h',...
'markersize',12,...
'MarkerEdgeColor',[1 1 1],...
'MarkerFaceColor',[1 1 1],...
'color',[0 0 0]);
setappdata(gcf,'HandleParticle',h);
start(timerB);
end
end
%--------------------------------------------------------------------------
% 定时器回调函数（粒子）
%--------------------------------------------------------------------------
function TimerFcnB(timerB,~)
tb = get(timerB,'TasksExecuted')*0.15;
if age>0 && any(colordist>=0.05)
colormat = colormat*rate(k);
colordist = sqrt(sum(colormat.^2,2));
for i = 1:250
xi = v1*cos(phi(i))*cos(theta(i))*tb;
yi = v1*cos(phi(i))*sin(theta(i))*tb;
zi = zs+v1*sin(phi(i))*tb+0.5*g*tb^2;
set(h(i),'XData',xi,'YData',yi,'ZData',zi,...
'MarkerEdgeColor',colormat(i,:),...
'MarkerFaceColor',colormat(i,:))
end
drawnow
age = age-0.1;
k = k+1;
else
stop(timerB);
delete(h)
end
end
%-------------------
end
⛄ 运行结果
