gpuarray
或
parfor
循环,我可以更新图上的许多变量,但显然情况并非如此,当这些函数解析图时,图的句柄会丢失连接。有没有其他方法可以改进和加速动画。我将附上我的代码并简要解释。我还将附上2个礼物,显示我正在努力做什么。
cellfun
或对位置数据进行其他计算密集型计算,然后覆盖对象的位置数据。
classdef StimBud<handle
properties
Window % holds figure
ObjectList % holds object handles
ObjectTransformation % holds object transformation
ObjectLocX
ObjectLocY
ObjectRotation
end
methods
function gh = StimBud()
end
function buildobjects(gh,numofObj)
gh.Window = figure('MenuBar','none', ... % Build Window for stimulus
'Color',[0,0,0]);
for aa = 1:numofObj
gh.ObjectTransformation{aa} = hgtransform; % Add object to end of transformation list
gh.ObjectList{aa} = patch(... % Add object to end of Object list, bind to transformation list
'Parent', gh.ObjectTransformation{aa}, ...
'XData',[0,0,1,1], 'YData',[0,1,1,0],...
'Facecolor', [1,1,0], 'EdgeColor', [1,1,0], ...
'visible','on');
end
% define transforamtion and position variables
parse = 360/numofObj;
rotationcalculation = 0;
XData = repmat(10,1,numofObj);
YData = zeros(1,numofObj);
TmpXdata = cell(numofObj,1); % container to hold all X location data
TmpRot = zeros(numofObj,1); % container to hold the Rotation data
TmpYdata = cell(numofObj,1); % container to hold all Y location data
% Adjust position & rotation of all available objects
for aa = 1:numofObj
% Rotate objects to change direction of movement
gh.ObjectTransformation{aa}.Matrix = makehgtform('zrotate',(deg2rad(aa*parse)+rotationcalculation));
% move object to proper position
gh.ObjectList{aa}.XData = gh.ObjectList{aa}.XData + XData(aa);
gh.ObjectList{aa}.YData = gh.ObjectList{aa}.YData + YData(aa);
TmpXdata{aa} = gh.ObjectList{aa}.XData;
TmpYdata{aa} = gh.ObjectList{aa}.YData;
TmpRot(aa) = (deg2rad(aa*parse)+rotationcalculation);
end
% store variable out of objects for threading
gh.ObjectLocX = TmpXdata;
gh.ObjectLocY = TmpYdata;
gh.ObjectRotation = TmpRot;
end
function RunStim(gh)
figure(gh.Window);
TrialLength = 10; % Length of trial to be run
Framerate = 60;
ObjSpeed = 10;
% pull variables into function
ObjList = gh.ObjectList;
ObjLocX = gh.ObjectLocX;
ObjLocY = gh.ObjectLocY;
ObjRotation = gh.ObjectRotation;
NumofObj = length(ObjList); % Number of Objects in stim system
timer = tic(); % Timer for the stimulus
moveforward = .03*.1*ObjSpeed; % Distance to move in figure
while toc(timer) < TrialLength % Run stimulus through length of project
NextStepX = cellfun(@(x) x+moveforward,ObjLocX);
NextStepY = cellfun(@(x) x+moveforward,ObjLocY);
NextRot = ObjRotation + moveforward;
for aa = 1:NumofObj %% parfor does not work here %%
ObjList{aa}.XData = NextStepX{aa};
end
ObjLocX = NextStepX; % Update X location matrix for next step
ObjLocY = NextStepY; % Update Y location matrix for next step
ObjRotation = NextRot; % Update Rotation matrix for next step
pause(1/Framerate) % Pause window briefly to allow for drawing
end
end
end
end
要创建动画:
s = StimBud;
s.buildobjects(5)
s.RunStim
这个GIF显示了我用上面的代码构建的一个动画,上面有5个对象。即使我在使用for循环,它在显示和动画方面也很快。
下面是当我增加对象数量时会发生的情况(由于for循环,这一点非常明显)。动画的速度会大大减慢,不像平滑的那样慢,并且移动的距离与对象较少的动画不同。
我希望使用多线程来纠正这个问题,但这似乎不是一个可行的选择(至少从我所学到的)。如何在MATLAB图形中改进动画?我是不是想错了,不应该用
figure
