matlab如何画五星红旗.doc

生成五角星顶点的子函数（GetPentagramVertices.m）function x y = GetPentagramVertices(centerPos, radius, orientation) % 子函数： 获得五角星的十个顶点 % orientation 定位Rad_ext = radius .* ones(1,5); % ones生成1行五列的矩阵，所有参数为1Ori_ext = (0:72:359 + 90 +orientation).* pi/ 180; %0:72:359以72度为间隔产生五个数Rad_int = radius .* sind(18)./sind(126) .* ones(1,5); % sind(30)=0.5Ori_int = (0:72:359 - 90 +orientation).* pi/ 180; Ori_int = Ori_int(4 5 1 2 3); %强制换序Rad_all = zeros(1,10); Ori_all = zeros(1,10); Rad_all(1:2:10 2:2:10) = Rad_ext Rad_int; Ori_all(1:2:10 2:2:10) = Ori_ext Ori_int; x y = pol2cart(Ori_all, Rad_all); % pol2cart在MATLAB中， 该函数用于把极坐标（柱坐标）转换为笛卡尔坐标（指平面直角坐标或空间直角坐标）；把柱坐标(THETA,RHO,Z)转换为对应的三维笛卡尔坐标(X,Y,Z)。x = x + centerPos(1); y = y + centerPos(2);主程序1 paintFSRF_script.m程序是画静态的五星红旗，并将图像以FiveStarRedFlag.png保存在当前目录下。这个五星红旗的比例是按照中华人民共和国国旗制法说明绘制的第一行是调整国旗分辨率的，可以自行修改，但是要保持3:2的比例。flag_dimension_in_pixel = 600 400; figure_leftbottom_pos = 100 100; bkg_color = 1 0 0; star_color = 1 1 0; flag_horiz_units_num = 30; flag_verti_units_num = 20; star_vertices_x = zeros(10, 5); star_vertices_y = zeros(10, 5); stars(5).center_pos = ; stars(1).center_pos = 5 15; stars(1).radius = 3; stars(1).orientation = 0; stars(2).center_pos = 10 18; stars(2).radius = 1; stars(2).orientation = 0; stars(3).center_pos = 12 16; stars(3).radius = 1; stars(3).orientation = 0; stars(4).center_pos = 12 13; stars(4).radius = 1; stars(4).orientation = 0; stars(5).center_pos = 10 11; stars(5).radius = 1; stars(5).orientation = 0; %类似于c#的自定义函数调用？for i = 2:5 dists = deal(stars(i).center_pos - stars(1).center_pos); stars(i).orientation = atan(dists(2)/dists(1).*180/pi + 90; end % Prepare the background flag_figure = figure(Units, pixels, . Position, figure_leftbottom_pos, flag_dimension_in_pixel); flag_axes = axes(Parent, flag_figure, Units,pixels, . Position, 1 1 flag_dimension_in_pixel, Color, 1 0 0); set(flag_axes, XLim, 0 flag_horiz_units_num, YLim, 0 flag_verti_units_num); rectangle(Position, 0 0 flag_horiz_units_num flag_verti_units_num, . FaceColor, bkg_color ,EdgeColor ,bkg_color); set(flag_axes, Visible,off); % Get the Stars Vertices for i = 1:5 star_vertices_x(:, i) star_vertices_y(:, i) = . GetPentagramVertices(stars(i).center_pos, . stars(i).radius,stars(i).orientation); end star_handles = patch(star_vertices_x, star_vertices_y, star_color); set(star_handles, EdgeColor, star_color); flag_image = frame2im(getframe(flag_figure); imwrite(flag_image, FiveStarRedFlag.png);% 如装有Image Processing Toolbox的话，解注下面几行可以保存图形文件 % % filename, pathname, filterindex = . % uiputfile(*,Save the Nation Flag as.) % % imwrite(flag_image, pathname filename);主程序2 paintFlyingFSRF_script.m程序是飘扬的五星红旗，效果是3D实时渲染出来的，所以速度有点慢，机器够牛的同学可以试着将第一行的分辨率改大flag_size = 600 400; % Change as you see fitflag_dimension_in_pixel = flag_size; %600 400; figure_leftbottom_pos = 100 100; bkg_color = 1 0 0; star_color = 1 1 0; flag_horiz_units_num = 30; flag_verti_units_num = 20; star_vertices_x = zeros(10, 5); star_vertices_y = zeros(10, 5); stars(5).center_pos = ; stars(1).center_pos = 5 15; stars(1).radius = 3; stars(1).orientation = 0; stars(2).center_pos = 10 18; stars(2).radius = 1; stars(2).orientation = 0; stars(3).center_pos = 12 16; stars(3).radius = 1; stars(3).orientation = 0; stars(4).center_pos = 12 13; stars(4).radius = 1; stars(4).orientation = 0; stars(5).center_pos = 10 11; stars(5).radius = 1; stars(5).orientation = 0; for i = 2:5 dists = deal(stars(i).center_pos - stars(1).center_pos); stars(i).orientation = atan(dists(2)/dists(1).*180/pi + 90; end % Prepare the background flag_figure = figure(Units, pixels, . Position, figure_leftbottom_pos, flag_dimension_in_pixel); flag_axes = axes(Parent, flag_figure, Units,pixels, . Position, 1 1 flag_dimension_in_pixel, Color, 1 0 0); set(flag_axes, XLim, 0 flag_horiz_units_num, YLim, 0 flag_verti_units_num); rectangle(Position, 0 0 flag_horiz_units_num flag_verti_units_num, . FaceColor, bkg_color ,EdgeColor ,bkg_color); set(flag_axes, Visible,off); % Get the Stars Vertices for i = 1:5 star_vertices_x(:, i) star_vertices_y(:, i) = . GetPentagramVertices(stars(i).center_pos, . stars(i).radius,stars(i).orientation); end star_handles = patch(star_vertices_x, star_vertices_y, star_color); set(star_handles, EdgeColor, star_color); flag_texture = double(frame2im(getframe(flag_figure)./255; % Constantscycle = 2;cycle2 = 3;frames = 20;wave_length = flag_size(1)./cycle;wave_length2 = flag_size(2)./cycle2;rot_angle = 15.*pi/180;rot_angle2 = 5.*pi/180;amp1 = 1;amp2 = 0.5;flying_FSRF_RGBimages = uint8(zeros(flag_size(2), flag_size(1), 3, frames);flying_FSRF_INDimages = uint8(zeros(flag_size(2), flag_size(1), 1, frames);flying_FSRF_INDmap = zeros(256, 3, frames); GIF_filename = Flying_FSRF.gif;PNG_filename = Flying_FSRF.png;% Main Program% flag_texture = paintFiveStarRedFlag(flag_size);flag_figure_handle = gcf;flag_size = size(flag_texture);flag_x flag_y = meshgrid(1:flag_size(2), 1:flag_size(1);for i = 1:frames cla;flag_z = amp1.*sin(cos(rot_angle).*flag_x - sin(rot_angle).*flag_y).*2*pi./wave_length . - 2*pi*(i-1)/frames) + . amp2.*sin(cos(rot_angle2).*flag_x-sin(rot_angle2).*flag_y).*2*pi./wave_length2 . - 2*pi*(i-1)/frames) + . sin(cosd(20).*flag_x-sind(20).*flag_y).*2*pi./600 - 2*pi*(i-1)/frames); flag_surf_handle = warp(flag_x,flag_y,flag_z,flag_texture);view(2);set(flag_surf_handle, FaceLighting, phong,AmbientStrength, 0.7);set(gca, Visible, off, XLim, 1 600, YLim, 1 400, ZLim, -3 3);camproj(perspective)material dull% light_handle = camlight(right);l1 = light(Position, 600 200 1, Color, 1 1 1);l2 = light(Position, 0, 0, 4, Color, 1 1 1);flying_FSRF_frames(i) = getframe(flag_figure_handle); flying_FSRF_RGBimages(:,:,:,i) = flying_FSRF_frames(i).cdata;current_INDimage currentMap = rgb2ind(flying_FSRF_RGBimages(:,:,:,i), 256);if i=1 imwrite(current_INDimage, currentMap,GIF_filename,. GIF, LoopCount, inf, DelayTime, 0.05); imwrite(flying_FSRF_RGBimages(:,:,:,i),PNG_filename ,PNG);else imwrite(current_INDimage, currentMap,GIF_filename,. GIF, WriteMode, Append, DelayTime, 0.05);endend主程序3 paintFlyingFSRFQuick_script.mflag_size = 600 400; % Change as you see fitflag_dimension_in_pixel = flag_size; %600 400; figure_leftbottom_pos = 100 100; bkg_color = 1 0 0; star_color = 1 1 0; flag_horiz_units_num = 30; flag_verti_units_num = 20; star_vertices_x = zeros(10, 5); star_vertices_y = zeros(10, 5); stars(5).center_pos = ; stars(1).center_pos = 5 15; stars(1).radius = 3; stars(1).orientation = 0; stars(2).center_pos = 10 18; stars(2).radius = 1; stars(2).orientation = 0; stars(3).center_pos = 12 16; stars(3).radius = 1; stars(3).orientation = 0; stars(4).center_pos = 12 13; stars(4).radius = 1; stars(4).orientation = 0; stars(5).center_pos = 10 11; stars(5).radius = 1; stars(5).orientation = 0; for i = 2:5 dists = deal(stars(i).center_pos - stars(1).center_pos); stars(i).orientation = atan(dists(2)/dists(1).*180/pi + 90; end % Prepare the background flag_figure = figure(Units, pixels, . Position, figure_leftbottom_pos, flag_dimension_in_pixel); flag_axes = axes(Parent, flag_figure, Units,pixels, . Position, 1 1 flag_dimension_in_pixel, Color, 1 0 0); set(flag_axes, XLim, 0 flag_horiz_units_num, YLim, 0 flag_verti_units_num); rectangle(Position, 0 0 flag_horiz_units_num flag_verti_units_num, . FaceColor, bkg_color ,EdgeColor ,bkg_color); set(flag_axes, Visible,off); % Get the Stars Vertices for i = 1:5 star_vertices_x(:, i) star_vertices_y(:, i) = . GetPentagramVertices(stars(i).center_pos, . stars(i).radius,stars(i).orientation); end star_handles = patch(star_vertices_x, star_vertices_y, star_color); set(star_handles, EdgeColor, star_color); flag_texture = double(frame2im(getframe(flag_figure)./255; % Constantscycle = 2;cycle2 = 3;frames = 20;wave_length = flag_size(1)./cycle;wave_length2 = flag_size(2)./cycle2;rot_angle = 15.*pi/180;rot_angle2 = 5.*pi/180;amp1 = 1;amp2 = 0.5;flying_FSRF_RGBimages = uint8(zeros(flag_size(2), flag_size(1), 3, frames);flying_FSRF_INDimages = uint8(zeros(flag_size(2), flag_size(1), 1, frames);flying_FSRF_INDmap = zeros(256, 3, frames); GIF_filename = Flying_FSRF.gif;PNG_filename = Flying_FSRF.png;% Main Program% flag_texture = paintFiveStarRedFlag(flag_size);flag_figure_handle = gcf;flag_size = size(flag_texture);flag_x flag_y = meshgrid(1:flag_size(2), 1:flag_size(1);for i = 1:frames cla;flag_z = amp1.*sin(cos(rot_angle).*flag_x - sin(rot_angle).*flag_y).*2*pi./wave_length . - 2*pi*(i-1)/frames) + . amp2.*sin(cos(rot_angle2).*flag_x-sin(rot_angle2).*flag_y).*2*pi./wave_length2 . - 2*pi*(i-1)/frames) + . sin(cosd(2