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花匠小妙招
2024-09-14 17:05

Hey又是一年七夕节要到了，每年一次直男审美MATLAB绘图大赛开始hiahiahia，真的这些代码越写越不知道咋写，又不想每年把之前的代码翻出来再发一遍，于是今年又对我之前写的老代码进行了点优化组合，整了个花球变花束：

在此祝各位成双成对和形单影只的都七夕节快乐叭！！！

先稍微说一下原理，再去给完整代码哈。

玫瑰花

玫瑰花咋画以及怎么旋转到合适的位置可以参见这篇推送：

https://slandarer.blog.csdn.net/article/details/117048623

我当时还是写的非常详细的，可以看的时候顺手点个赞hiahiahia。

周围小花

是把以下这段很简单的代码进行了微调改了改颜色啥的：

rb=0:.01:1; tb=linspace(0,2,151); Wb=rb'*((abs((1-mod(tb*5,2))))/2+.3); Xb=Wb.*cospi(tb); Yb=Wb.*sinpi(tb); zb=@(a)(-cospi(Wb*a)+1).^.2; Zb=zb(1.2); g=@(i)i(:,1:30:151)/2; plot3(g(Xb),g(Yb),g(zb(1)*2.3),'k'); surface(Xb,Yb,Zb,'EdgeColor','none'); 12345678910

花杆和颜色

花杆就直接用贝塞尔曲线插了一下值，让其比较顺滑且扭转了起来，颜色的话把代码中的colorList换一下的话可以自行调整，这里给点颜色数值以供参考哈：

c1=[0.5600 0.2200 0.0300 0.6700 0.2900 0.0500 0.8300 0.4900 0.0900 0.8500 0.6200 0.1300 0.8800 0.7600 0.1300 0.9100 0.8300 0.2000 1.0000 0.9200 0.3100]; c2=[0.1800 0.0900 0.1800 0.3100 0.0800 0.2400 0.5100 0.0800 0.3400 0.6500 0.1200 0.3500 0.8600 0.3200 0.4500]; c3=[0.1100 0.3100 0.7500 0.3400 0.2900 0.6800 0.5100 0.2700 0.6400 0.5900 0.2700 0.6200 0.7600 0.2500 0.5700]; c4=[0.1400 0.1400 0.1400 0.2200 0.2200 0.2200 0.4100 0.4100 0.4100 0.6000 0.6000 0.6000 0.7500 0.7500 0.7500 0.8900 0.8900 0.8900]; c5=[0.3300 0.3300 0.6900 0.5300 0.4000 0.6800 0.6800 0.4200 0.6300 0.7800 0.4200 0.5700 0.9100 0.4900 0.4700 0.9600 0.7300 0.4400]; c6=[0.5300 0.8300 0.8100 0.5200 0.7500 0.8200 0.4900 0.6200 0.8400 0.4900 0.5600 0.8400 0.4700 0.4900 0.8500 0.4500 0.3500 0.8700 0.9500 0.9500 0.9500];

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hiahiahia奇怪的颜色增加了：

完整代码

感觉要运行的话至少需要R17b版本(17b也不算新了最新版都是更了十几代了)，要把代码改的适应更之前的版本老麻烦了。。。建议大家用点比较新的版本！！不然平白无故多写老多代码新版本还不一定用的了。

function roseBouquet figure('Units','normalized','Position',[.2,.1,.6,.7]) %曲面数据计算 ============================================================== % 玫瑰部分 ----------------------------------------------------------------- [xr,tr]=meshgrid((0:24)./24,(0:0.5:575)./575.*20.*pi+4*pi); pr=(pi/2)*exp(-tr./(8*pi)); cr=sin(15*tr)/150; ur=1-(1-mod(3.6*tr,2*pi)./pi).^4./2+cr; yr=2*(xr.^2-xr).^2.*sin(pr); rr=ur.*(xr.*sin(pr)+yr.*cos(pr)); hr=ur.*(xr.*cos(pr)-yr.*sin(pr)); % 百合花部分 --------------------------------------------------------------- rb=0:.01:1; tb=linspace(0,2,151); wb=rb'*((abs((1-mod(tb*5,2))))/2+.3); xb=wb.*cospi(tb); yb=wb.*sinpi(tb); zb=@(a)(-cospi(wb*a)+1).^.2; Zb=zb(1.2); g=@(i)i(:,1:30:151)/2; %颜色映射表 ================================================================ colorList=[0.3300 0.3300 0.6900 0.5300 0.4000 0.6800 0.6800 0.4200 0.6300 0.7800 0.4200 0.5700 0.9100 0.4900 0.4700 0.9600 0.7300 0.4400]; % colorList=[0.9176 0.7490 0.3765 % 0.9294 0.7725 0.4902 % 0.9333 0.7451 0.5961 % 0.8902 0.6980 0.5294 % 0.8784 0.6941 0.6235 % 0.9216 0.7412 0.7529 % 0.8588 0.6039 0.7686 % 0.8510 0.4706 0.6392 % 0.7608 0.2118 0.3569]; colorMapr=setColorByH(hr,colorList); colorMapb=setColorByH(Zb,colorList.*.4+.6); function cMap=setColorByH(H,cList) X=(H-min(min(H)))./(max(max(H))-min(min(H))); xx=(0:size(cList,1)-1)./(size(cList,1)-1); y1=cList(:,1);y2=cList(:,2);y3=cList(:,3); cMap(:,:,1)=interp1(xx,y1,X,'linear'); cMap(:,:,2)=interp1(xx,y2,X,'linear'); cMap(:,:,3)=interp1(xx,y3,X,'linear'); end % 旋转函数预定义 =========================================================== yaw_z=72*pi/180; roll_x_1=pi/8; roll_x_2=pi/9; R_z_2=[cos(yaw_z) , -sin(yaw_z) , 0; sin(yaw_z) , cos(yaw_z) , 0; 0, 0, 1]; R_z_1=[cos(yaw_z/2), -sin(yaw_z/2), 0; sin(yaw_z/2), cos(yaw_z/2), 0; 0, 0, 1]; R_z_3=[cos(yaw_z/3), -sin(yaw_z/3), 0; sin(yaw_z/3), cos(yaw_z/3), 0; 0, 0, 1]; R_x_1=[1, 0, 0; 0, cos(roll_x_1), -sin(roll_x_1); 0, sin(roll_x_1), cos(roll_x_1)]; R_x_2=[1, 0, 0; 0, cos(roll_x_2), -sin(roll_x_2); 0, sin(roll_x_2), cos(roll_x_2)]; function [nX,nY,nZ]=rotateXYZ(X,Y,Z,R) nX=zeros(size(X)); nY=zeros(size(Y)); nZ=zeros(size(Z)); for i=1:size(X,1) for j=1:size(X,2) v=[X(i,j);Y(i,j);Z(i,j)]; nv=R*v; nX(i,j)=nv(1); nY(i,j)=nv(2); nZ(i,j)=nv(3); end end end % 绘制花杆函数预定义 ======================================================== function drawStraw(X,Y,Z) [m,n]=find(Z==min(min(Z))); m=m(1);n=n(1); x1=X(m,n);y1=Y(m,n);z1=Z(m,n)+.03; xx=[x1,0,(x1.*cos(pi/3)-y1.*sin(pi/3))./3].'; yy=[y1,0,(y1.*cos(pi/3)+x1.*sin(pi/3))./3].'; zz=[z1,-.7,-1.5].'; strawPnts=bezierCurve([xx,yy,zz],50); plot3(strawPnts(:,1),strawPnts(:,2),strawPnts(:,3),'Color',[88,130,126]./255,'LineWidth',2) end % 贝塞尔函数 --------------------------------------------------------------- function pnts=bezierCurve(pnts,N) t=linspace(0,1,N); p=size(pnts,1)-1; coe1=factorial(p)./factorial(0:p)./factorial(p:-1:0); coe2=((t).^((0:p)')).*((1-t).^((p:-1:0)')); pnts=(pnts'*(coe1'.*coe2))'; end %曲面旋转及绘制 ============================================================ hold on surface(rr.*cos(tr),rr.*sin(tr),hr+0.35,'EdgeAlpha',0.05,... 'EdgeColor',[0 0 0],'FaceColor','interp','CData',colorMapr,'Tag','slandarer') [nXr,nYr,nZr]=rotateXYZ(rr.*cos(tr),rr.*sin(tr),hr+0.35,R_x_1); nYr=nYr-.4; surface(nXr,nYr,nZr-.1,'EdgeAlpha',0.05,... 'EdgeColor',[0 0 0],'FaceColor','interp','CData',colorMapr) drawStraw(nXr,nYr,nZr-.1) for k=1:4 [nXr,nYr,nZr]=rotateXYZ(nXr,nYr,nZr,R_z_2); surface(nXr,nYr,nZr-.1,'EdgeAlpha',0.05,... 'EdgeColor',[0 0 0],'FaceColor','interp','CData',colorMapr) drawStraw(nXr,nYr,nZr-.1) end % ------------------------------------------------------------------------- [nXb,nYb,nZb]=rotateXYZ(xb./2.5,yb./2.5,Zb./2.5+.32,R_x_2); nYb=nYb-1.35; for k=1:5 [nXb,nYb,nZb]=rotateXYZ(nXb,nYb,nZb,R_z_2); surface(nXb,nYb,nZb,'EdgeColor','none','FaceColor','interp','CData',colorMapb) drawStraw(nXb,nYb,nZb) end [nXb,nYb,nZb]=rotateXYZ(xb./2.5,yb./2.5,Zb./2.5+.32,R_x_2); nYb=nYb-1.15; [nXb,nYb,nZb]=rotateXYZ(nXb,nYb,nZb,R_z_1); for k=1:5 [nXb,nYb,nZb]=rotateXYZ(nXb,nYb,nZb,R_z_2); surface(nXb,nYb,nZb,'EdgeColor','none','FaceColor','interp','CData',colorMapb) drawStraw(nXb,nYb,nZb) end [nXb,nYb,nZb]=rotateXYZ(xb./2.5,yb./2.5,Zb./2.5+.32,R_x_2); nYb=nYb-1.25; [nXb,nYb,nZb]=rotateXYZ(nXb,nYb,nZb,R_z_3); for k=1:5 [nXb,nYb,nZb]=rotateXYZ(nXb,nYb,nZb,R_z_2); surface(nXb,nYb,nZb,'EdgeColor','none','FaceColor','interp','CData',colorMapb) drawStraw(nXb,nYb,nZb) end [nXb,nYb,nZb]=rotateXYZ(xb./2.5,yb./2.5,Zb./2.5+.32,R_x_2); nYb=nYb-1.25; [nXb,nYb,nZb]=rotateXYZ(nXb,nYb,nZb,R_z_3); [nXb,nYb,nZb]=rotateXYZ(nXb,nYb,nZb,R_z_3); for k=1:5 [nXb,nYb,nZb]=rotateXYZ(nXb,nYb,nZb,R_z_2); surface(nXb,nYb,nZb,'EdgeColor','none','FaceColor','interp','CData',colorMapb) drawStraw(nXb,nYb,nZb) end %axes属性调整 ============================================================== ax=gca; ax.Position=[0,0,1,1]; grid on ax.GridLineStyle='--'; ax.LineWidth=1.2; ax.XColor=[1,1,1].*0.4; ax.YColor=[1,1,1].*0.4; ax.ZColor=[1,1,1].*0.4; ax.DataAspectRatio=[1,1,1]; ax.DataAspectRatioMode='manual'; view(-15,35); end

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