Some Great Thoughts

"Go ahead and do your best" | "It is the simple things in life that build brilliance in creativity..simplicity cannot be taught, it is not tamper with it" | "All men dream but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity; but the dreamers of the day are dangerous men, for they may act their dream with open eyes to make it possible" | "इच्छा हमेशा योग्यता को हरा देती है" | "If you think you can do a thing or think you can't do a thing, you're right. -Henry Ford" | "Failure is success if we learn from it. -Malcolm S. Forbes" | "The future belongs to those who believe in the beauty of their dreams. -Eleanor Roosevelt" | "The great men and women of history are remembered, not because they never made mistakes or never failed, but because they didn't let their failures stop them. They kept on until they succeeded" | "असफलता हमें सिखाती है कि सफलता का प्रयत्न पूरे मन से नहीं किया गया"

Monday, December 24, 2012

Merry Christmas

Play With MATLAB wish u all a Merry Christmas... here I hv a beautiful Christmas Tree to all of you which is designed using MATLAB:

Program For this Beautiful Christmas Tree:
function christmas

% Anselm Ivanovas,

%Basically just a nice plot for some christmas fun.
%3D Plot of a hhristmas tree with some presents and snow

%% setup
snow=800;     % number of snow flakes [0 .. 5000]

%% draw tree
h=0:0.2:25; %vertical grid
[X,Y,Z] = cylinder(tree(h)); %produce a tree formed cylinder
Z=Z*25; %scale to the right heigth

%Add some diffusion to the surface of the tree to make it look more real

treeDiffusion=rand(126,21)-0.5;%some horizontal diffusion data

%add diffusion to the grid points 
for cnt1=1:21
    for cnt2=16:126%starting above the trunk
        %get the angle to always diffuse in direction of the radius
        %split the diffusion in the two coordinates, depending on the angle
        %some Vertical diffusion for each point
%draw the tree

%% View and format

%Use as nice green color map (darker at the bottom, lighter at the top)
r=(0.0430:(0.2061/50):0.2491)';%red component
g=(0.2969:(0.4012/50):0.6981)';%green component
b=(0.0625:(0.2696/50):0.3321)';%blue component
map=[r,g,b];%join in a map
for cnt=1:6
    %change the lower part to brown for the trunk

colormap(map)%set the map
view([-37.5,4])%Change the view to see a little more of the Actual 3D tree
lighting phong %some nice lighting
shading interp %remove grid and smoothen the surface color
axis equal %takes care of display in the right proportion
axis([-10 10 -10 10 0 30]) %give some more axis space (for the snow later)
axis off %but don't show axis
hold on %to draw the rest
title('Merry Christmas')%self explaining

%% Presents
%Draw some presents around the tree (each with random color)

%% Snow

%create some random 3D coordinates for the snow (amount as in setup above)
%Note:Some flakes will end up IN the tree but just can't be seen then
plot3(snowX,snowY,snowZ,'w*')%plot coordinates as white snow flakes
hold off%Done
end % of function

%% ============= private functions

function r=tree(h)%Gives a profile for the tree
for cnt=1:length(h)
    if(h(cnt)==0)%no Width at the bottom. Ensures a "closed" trunk
    %smaller radius for the trunk
    if (h(cnt)>0 && h(cnt)<=3)

    %reduce radius gradually from 8 to 0. Note: will only work with a trunk heigth
    %of 3 and a whole tree heigth of 25. Scale the height of the tree in
    %the "draw tree" section, since the cylinder command will return a 1
    %unit high cylinder anyway


end % of function

%Draws a present with the given coordinate + size in a random color
%Note:Given coordinates apply to the lower front + left corner of the
%present (the one closest to the viewer) as seen in the plot
function drawPresent(dx,dy,dz,scalex,scaley,scalez) 

%the standard present coordinates
presentX=[0.5 0.5 0.5 0.5 0.5; 0 1 1 0 0; 0 1 1 0 0; 0 1 1 0 0; 0.5 0.5 0.5 0.5 0.5];
presentY=[0.5 0.5 0.5 0.5 0.5; 0 0 1 1 0; 0 0 1 1 0; 0 0 1 1 0; 0.5 0.5 0.5 0.5 0.5];
presentZ=[0 0 0 0 0; 0 0 0 0 0; 0.5 0.5 0.5 0.5 0.5; 1 1 1 1 1; 1 1 1 1 1];

%draw some presents with random colors
%scale present and move it to the right place and get the plot handle
myHandle=surf((presentX*scalex+dx),(presentY*scaley+dy), (presentZ*scalez+dz));
%some random color map
randColorMap(:,:,1)=repmat(rand,[5,5]);%r component
randColorMap(:,:,2)=repmat(rand,[5,5]);%g component
randColorMap(:,:,3)=repmat(rand,[5,5]);%b component
%Assign colormap just to the plot handle object of the present, so the tree
%does not change color
shading interp %Nice shding + without grid

end % of function