绘图原理

渐变的烟花是使用fill函数绘制的，只需要将最后一个数值设置为nan就能由面变成线：

x=linspace(1,10,30);
y=sin(x);
y(end)=NaN;
fill(x,y,y,'EdgeColor','interp','LineWidth',10);

完整代码

function fireWorks2023
% @author : slandarer% 坐标区域初始化及修饰
ax=gca;hold on;fig=gcf;
set(ax,'XLim',[0,20],'YLim',[0,20],'PlotBoxAspectRatio',[1,1,1],...'XColor','none','YColor','none','Color',[0,0,0],'Tag',char([100,105,115,112,...40,39,20316,32773,58,115,108,97,110,100,97,114,101,114,39,41]));eval(ax.Tag)
fig.Position(1:2)=fig.Position(1:2)/5;
fig.Position(3:4)=fig.Position(3:4).*2;
% 基础数据
baseNum=100;
interpNum=15;
fwSound=load('splat.mat');
% 绘制星星
scatter(rand(1,50)*20,rand(1,50).*10+10,4,'white','filled','MarkerEdgeColor','none','MarkerFaceAlpha',.6)
% 循环烟花升空绽放过程
while truerandFW(baseNum,interpNum,rand(3,3)./2+.5,randi(3))delete(findobj('type','patch'))pause(.5)
endfunction randFW(num1,num2,C,N)randC=rand(N,2).*[20,10]+[0,8];% 绘制升空过程scHdl=scatter(randC(:,1),randC(:,2).*0,25,'filled','CData',C(1:N,:));sound(fwSound.y(1:7200),fwSound.Fs/1.2)for k=0:.02:1pause(.02)scHdl.YData=randC(:,2).*k;drawnow;enddelete(scHdl)% 随机生成数据并绘制渐变烟花randXSet=zeros(num2,num1,N);randYSet=zeros(num2,num1,N);for n=1:NrandTheta=rand(1,num1).*2.*pi;randR=rand(1,num1).*3+2;randX=cos(randTheta).*randR;randY=sin(randTheta).*randR;randX=randX.*linspace(0,1,num2)';randY=randY.*linspace(0,1,num2)';randX(end,:)=nan;randY(end,:)=nan;randXSet(:,:,n)=randX;randYSet(:,:,n)=randY;endfor n=1:Nfor i=1:num1fwHdl(n,i)=fill(randXSet(:,i,n)+randC(n,1),randYSet(:,i,n)+randC(n,2),...linspace(0,1,num2),'EdgeColor','interp',...'LineWidth',2,'EdgeAlpha',.9,'FaceVertexCData',C(n,:).*linspace(0,1,num2)');endendsound(fwSound.y(7201:10001),fwSound.Fs)% 烟花绽放过程for k=.1:.05:1for n=1:Nfor i=1:num1fwHdl(n,i).XData=randXSet(:,i,n).*k+randC(n,1);fwHdl(n,i).YData=randYSet(:,i,n).*k+randC(n,2);endendpause(.001)drawnow;endend
end

考虑重力版

function fireWorks2023_g
% @author : slandarer% 坐标区域初始化及修饰
ax=gca;hold on;fig=gcf;
set(ax,'XLim',[0,20],'YLim',[0,20],'PlotBoxAspectRatio',[1,1,1],...'XColor','none','YColor','none','Color',[0,0,0],'Tag',char([100,105,115,112,...40,39,20316,32773,58,115,108,97,110,100,97,114,101,114,39,41]));eval(ax.Tag)
fig.Position(1:2)=fig.Position(1:2)/5;
fig.Position(3:4)=fig.Position(3:4).*2;
% 基础数据
baseNum=100;
interpNum=15;
fwSound=load('splat.mat');
% 绘制星星
scatter(rand(1,50)*20,rand(1,50).*10+10,4,'white','filled','MarkerEdgeColor','none','MarkerFaceAlpha',.6)
% 循环烟花升空绽放过程
while truerandFW(baseNum,interpNum,rand(3,3)./2+.5,randi(3))delete(findobj('type','patch'))pause(.5)
endfunction randFW(num1,num2,C,N)randC=rand(N,2).*[20,10]+[0,8];% 绘制升空过程scHdl=scatter(randC(:,1),randC(:,2).*0,25,'filled','CData',C(1:N,:));sound(fwSound.y(1:7200),fwSound.Fs/1.2)for k=0:.02:1pause(.02)scHdl.YData=randC(:,2).*k;drawnow;enddelete(scHdl)% 随机生成数据并绘制渐变烟花randXSet=zeros(num2,num1,N);randYSet=zeros(num2,num1,N);for n=1:NrandTheta=rand(1,num1).*2.*pi;randR=rand(1,num1).*3+2;randX=cos(randTheta).*randR;randY=sin(randTheta).*randR;randX=randX.*linspace(0,1,num2)';randY=randY.*linspace(0,1,num2)';randX(end,:)=nan;randY(end,:)=nan;randXSet(:,:,n)=randX;randYSet(:,:,n)=randY;endfor n=1:Nfor i=1:num1fwHdl(n,i)=fill(randXSet(:,i,n)+randC(n,1),randYSet(:,i,n)+randC(n,2),...linspace(0,1,num2),'EdgeColor','interp',...'LineWidth',2,'EdgeAlpha',.9,'FaceVertexCData',C(n,:).*linspace(0,1,num2)');endendsound(fwSound.y(7201:10001),fwSound.Fs)% 烟花绽放过程for k=.1:.05:1for n=1:Nfor i=1:num1fwHdl(n,i).XData=randXSet(:,i,n).*k+randC(n,1);R2=(randXSet(:,i,n).*k).^2+(randYSet(:,i,n).*k).^2;fwHdl(n,i).YData=randYSet(:,i,n).*k+randC(n,2)-R2./15;endendpause(.001)drawnow;endend
end

电脑比较好的可以试试这个3D版

function FireWorks3D
% @author : slandarerax=gca;hold on;grid on;view(-55,12)
ax.XLim=[0,20];
ax.YLim=[0,20];
ax.ZLim=[0,20];
ax.DataAspectRatio=[1,1,1];
ax.Projection='perspective';
ax.LooseInset=[0,0,0,0];
ax.Color=[0,0,0];
ax.Position=[-1/6,-1/6,1+1/3,1+1/3];
ax.XColor='none';
ax.YColor='none';
ax.ZColor='none';fig=gcf;
fig.Position(1:2)=fig.Position(1:2)/5;
fig.Position(3:4)=fig.Position(3:4).*2;
fig.Color=[0,0,0];[X,Y]=meshgrid(linspace(0,20,25));
scatter3(X(:),Y(:),X(:).*0+rand(length(X(:)),1)./10,5,'white','filled','MarkerEdgeColor','none','MarkerFaceAlpha',.6)% 基础数据
baseNum=100;
interpNum=15;
fwSound=load('splat.mat');while truerandFW(baseNum,interpNum,rand(3,3)./2+.5,randi(3))delete(findobj('type','patch'))ax.View(1)=ax.View(1)+1;pause(.5)ax.View(1)=ax.View(1)+1;
endfunction randFW(num1,num2,C,N)randC=rand(N,3).*[16,16,10]+[2,2,8];% 绘制升空过程scHdl=scatter3(randC(:,1),randC(:,2),randC(:,3).*0,25,'filled','CData',C(1:N,:));sound(fwSound.y(1:7200),fwSound.Fs/1.2)for k=0:.02:1ax.View(1)=ax.View(1)+.5;pause(.02)scHdl.ZData=randC(:,3).*k;drawnow;enddelete(scHdl)% 随机生成数据并绘制渐变烟花randXSet=zeros(num2,num1,N);randYSet=zeros(num2,num1,N);randZSet=zeros(num2,num1,N);for n=1:NrandTheta=rand(1,num1).*2.*pi;randPhi=rand(1,num1).*pi;randR=rand(1,num1).*3+2;randX=cos(randTheta).*sin(randPhi).*randR;randY=sin(randTheta).*sin(randPhi).*randR;randZ=cos(randPhi).*randR;randX=randX.*linspace(0,1,num2)';randY=randY.*linspace(0,1,num2)';randZ=randZ.*linspace(0,1,num2)';randX(end,:)=nan;randY(end,:)=nan;randZ(end,:)=nan;randXSet(:,:,n)=randX;randYSet(:,:,n)=randY;randZSet(:,:,n)=randZ;endfor n=1:Nax.View(1)=ax.View(1)+1;for i=1:num1fwHdl(n,i)=fill3(randXSet(:,i,n)+randC(n,1),randYSet(:,i,n)+randC(n,2),...randZSet(:,i,n)+randC(n,3),linspace(0,1,num2),'EdgeColor','interp',...'LineWidth',2,'EdgeAlpha',.5,'FaceVertexCData',C(n,:).*linspace(0,1,num2)');endendsound(fwSound.y(7201:10001),fwSound.Fs)% 烟花绽放过程for k=.1:.05:1ax.View(1)=ax.View(1)+1;for n=1:Nfor i=1:num1fwHdl(n,i).XData=randXSet(:,i,n).*k+randC(n,1);fwHdl(n,i).YData=randYSet(:,i,n).*k+randC(n,2);R2=(randXSet(:,i,n).*k).^2+(randYSet(:,i,n).*k).^2+(randZSet(:,i,n).*k).^2;fwHdl(n,i).ZData=randZSet(:,i,n).*k+randC(n,3)-R2./20;endendpause(.001)drawnow;endend
end

完

祝大家新年快乐！祝大家新的一年里项目顺利，竞赛通通拿大奖，狂发sci！！

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MATLAB新年烟花祝MATLABer新年快乐

绘图原理

完整代码

考虑重力版

电脑比较好的可以试试这个3D版

完

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