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pltDrawMaze.m
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pltDrawMaze.m
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function [h,objShape,idxR,tbTitle] = pltDrawMaze(M,figCPxl,doClrBar)
% Draw maze plotting function
% -------------------------------------------------------------------------
%
% Function :
% [h,objShape,idxR,tbTitle] = pltDrawMaze(M,figCPxl)
%
% Inputs :
% M - Multi layer maze structure cell array
% figCPxl - Pixel cellsize of the maze
%
% Outputs :
% h - Figure handle of the drawn maze
% objShape - Contains all shape objects
% idxR - Refference index of the cell objects
% tbTitle - Title textbox object
%
% -------------------------------------------------------------------------
% Author : P.C. Luteijn
% email : p.c.luteijn@gmail.com
% Date : July 2017
% Comment : Plotting function draws the maze using rectangles and lines.
% -------------------------------------------------------------------------
% Dimension maze structure
[nr,nc,~] = size(M);
% Number of maze ellements
N = nr * nc;
% Parameters
valLineWidth = 1;
% Screen parameters
scrWidth = 1920;
scrHeight = 1080;
scrRatio = scrWidth / scrHeight;
scrWinBar = 85;
scrOffset = 20;
if exist('doClrBar') && doClrBar == 1
scrClrBar = 67;
else
scrClrBar = 0;
end
% Figure parameters
figWidth = figCPxl * nc;
figHeight = figCPxl * nr;
figRatio = figWidth / figHeight;
% Normalized figure dimensions
xoffset = scrOffset / scrWidth;
yoffset = ( scrOffset + scrWinBar ) / scrHeight;
width = ( figWidth + scrClrBar ) / scrWidth;
height = figHeight / scrHeight;
xpos = 1 - width - xoffset;
ypos = 1 - height - yoffset;
% Out of bounds recalculation : Width
beta = 0.98;
if xpos < 0 && ypos > 0
width = beta;
height = beta * scrRatio / figRatio;
xpos = 1 - width - (1-beta)/2;
ypos = 1 - height - (1-beta)/2;
end
% Out of bounds recalculation : Height
beta = 0.94;
if xpos > 0 && ypos < 0
width = beta * figRatio / scrRatio;
height = beta;
xpos = 1 - width - (1-beta)/2;
ypos = 1 - height - (1-beta)/2;
end
% Create figure
h = figure( ...
'Name', 'Maze', ...
'Units','Normalized', ...
'InnerPosition', [xpos,ypos,width,height] );
% Axis setup
ax_bdr = 20;
ax_xpos = ax_bdr / figWidth;
ax_ypos = ax_bdr / figHeight;
ax_width = 1 - 2*ax_xpos;
ax_height = 1 - 2*ax_ypos;
axis([0 nc 0 nr]);
set( gca, 'Units', 'Normalized', ...
'Position',[ ax_xpos, ax_ypos, ax_width, ax_height ] );
% Position on axis
X = [1:nc] - 1;
Y = nr - [1:nr];
% Initialize textbox object
tbTitle = text(0.5,(1+(5*scrOffset/8)/figHeight),'TEXT', ...
'Units', 'Normalized', ...
'HorizontalAlignment', 'Center', ...
'VerticalAlignment', 'Middle', ...
'FontSize', 10);
% Offset axis labels
doNumbers = 0;
if doNumbers
set(gca,'xTick',0.5:1:nc);
set(gca,'yTick',0.5:1:nr);
set(gca,'xTickLabel',1:nc);
set(gca,'yTickLabel',1:nr);
set(gca,'XTickLabelRotation',90);
else
set(gca,'xTick',[]);
set(gca,'yTick',[]);
set(gca,'xTickLabel',[]);
set(gca,'yTickLabel',[]);
end
% Hold plot properties
hold on
% Draw squares
for i = 1:nr
for j = 1:nc
% Index
idx = j + nr*(i-1);
% Add squares
square(idx) = rectangle( ...
'Position', [X(j),Y(i),1,1], ...
'EdgeColor', [1,1,1], ...
'FaceColor', [1,1,1] );
end
end
% Draw walls
for i = 1:nr
for j = 1:nc
x = X(j); y = Y(i);
if i == 1 && j == 1
% WALL : LEFT
if M(i,j,1) == 0
line( [x,x], [y,y+1], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
% WALL : BOTTOM
if M(i,j,2) == 0
line( [x,x+1], [y,y], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
% WALL : RIGHT
if M(i,j,3) == 0
line( [x+1,x+1], [y,y+1], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
% WALL : TOP
if M(i,j,4) == 0
line( [x,x+1], [y+1,y+1], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
elseif i == 1 && j > 1
% WALL : BOTTOM
if M(i,j,2) == 0
line( [x,x+1], [y,y], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
% WALL : RIGHT
if M(i,j,3) == 0
line( [x+1,x+1], [y,y+1], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
% WALL : TOP
if M(i,j,4) == 0
line( [x,x+1], [y+1,y+1], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
elseif i > 0 && j == 1
% WALL : LEFT
if M(i,j,1) == 0
line( [x,x], [y,y+1], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
% WALL : BOTTOM
if M(i,j,2) == 0
line( [x,x+1], [y,y], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
% WALL : RIGHT
if M(i,j,3) == 0
line( [x+1,x+1], [y,y+1], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
else
% WALL : BOTTOM
if M(i,j,2) == 0
line( [x,x+1], [y,y], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
% WALL : RIGHT
if M(i,j,3) == 0
line( [x+1,x+1], [y,y+1], ...
'Color', 'k', 'LineWidth', valLineWidth );
end
end
end
end
% End holding plot properties
hold off
% Return maze rectangle index
% ---------------------------------------------------------------------
% Get figure object handles
objShape = get(get(h,'Children'),'Children');
% Number of object shapes
nobj = length(objShape);
% Rectangle index (added -1 to compensate tb)
idxR = nobj - reshape([1:N]-1,[nc,nr])' - 1;
end