使填充的形状在 MATLAB 中移动

Question

我有以下语句用于在 matlab 中绘制填充的矩形和圆形。 我必须为这些语句添加的内容只是为了在每个没有碰撞的情况下在起点和目标点之间制作形状。

fill([9.5 9.5 11.5 11.5 ],[12.6 14.6 14.6 12.6],'r');  %rectangler shape
hold on
r=1; 
color=[1 0 0]; 
t=linspace(0,2*pi);
fill(15+r*cos(t),8+r*sin(t),color); %circle shape
grid on

Answer 1

以矩形为例。诀窍是逐渐修改对象属性，在本例中为'Vertices'

origin_x = [9.5 9.5 11.5 11.5 ]; %// initial coordinates of vertices
origin_y = [12.6 14.6 14.6 12.6];
destination_x = origin_x + 3; %// final coordinates of vertices
destination_y = origin_y + 2;
n_steps = 100; %// number of "frames"
t_pause = .03; %// seconds between frames

h = fill(origin_x, origin_y, 'r'); %// create object at initial position
axis([8 16 10 18]) %// adjust as needed, to cover the desired area
axis equal %// same scale in both axes
axis manual %// prevent axes from auto-scaling
for t = linspace(0,1,n_steps)
    x = (1-t)*origin_x + t*destination_x; %// update x
    y = (1-t)*origin_y + t*destination_y; %// update y
    set(h, 'Vertices', [x(:) y(:)]) %// change object's position
    pause(t_pause) %// a pause is needed to make movement slower
    drawnow %// probably not needed after pause. Just in case
end

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以矩形和圆形为例。方法类似：创建两个对象并在for 循环中更新它们的'Vertices' 属性。

%// Define rectangle values
origin_x1 = [9.5 9.5 11.5 11.5 ];
origin_y1 = [12.6 14.6 14.6 12.6];
destination_x1 = origin_x1 + 3;
destination_y1 = origin_y1 + 2;

%// Define circle values
r = 1;
v = linspace(0,2*pi);
origin_x2 = 15+r*cos(v);
origin_y2 = 10+r*sin(v);
destination_x2 = origin_x2 - 1;
destination_y2 = origin_y2 + 3;

%// Define movement speed
n_steps = 100;
t_pause = .03;

%// Create objects
h1 = fill(origin_x1, origin_y1, 'r');
hold on
h2 = fill(origin_x2, origin_y2, 'b');

axis([8 16 10 18])
axis equal
axis manual

%// Update properties
for t = linspace(0,1,n_steps)
    x1 = (1-t)*origin_x1 + t*destination_x1;
    y1 = (1-t)*origin_y1 + t*destination_y1;
    set(h1, 'Vertices', [x1(:) y1(:)])

    x2 = (1-t)*origin_x2 + t*destination_x2;
    y2 = (1-t)*origin_y2 + t*destination_y2;
    set(h2, 'Vertices', [x2(:) y2(:)])

    pause(t_pause)
    drawnow
end