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ImageIO/utils/lsmClasses/@LSMDrawingElement/LSMDrawingElement.m

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classdef LSMDrawingElement
%LSMDrawingElement Class representation of a DrawingElement in LSM files
% The description of a particular drawing element contains two parts.
% The first part is a fixed sized structure with equal fields for all
% drawing elements. The second part is drawing element type specific.
%
% AUTHOR: Stefano Masneri
% Date: 14.3.2017
properties
% fixed part
type; % 13 – Text (DRAWING_ELEMENT_FLOAT_TEXT)
% 14 – Line (DRAWING_ELEMENT_FLOAT_LINE)
% 15 – Horizontal or vertical scale bar with displayed length
% (DRAWING_ELEMENT_FLOAT_SCALE_BAR).
% 16 – Line with two line arrow tip
% (DRAWING_ELEMENT_FLOAT_OPEN_ARROW)
% 17 – Line with three line arrow tip
% (DRAWING_ELEMENT_FLOAT_CLOSED_ARROW)
% 18 – Rectangle (DRAWING_ELEMENT_FLOAT_RECTANGLE)
% 19 – Ellipse (DRAWING_ELEMENT_FLOAT_ELLIPSE)
% 20 – Closed polyline
% (DRAWING_ELEMENT_FLOAT_CLOSED_POLYLINE)
% 21 – Open polyline
% (DRAWING_ELEMENT_FLOAT_OPEN_POLYLINE)
% 22 – Closed Bezier spline curve
% (DRAWING_ELEMENT_FLOAT_CLOSED_BEZIER)
% 23 – Open Bezier spline curve
% (DRAWING_ELEMENT_FLOAT_OPEN_BEZIER)
% 24 – Circle
% (DRAWING_ELEMENT_FLOAT_CIRCLE)
% 25 – Rectangle with color palette
% (DRAWING_ELEMENT_FLOAT_PALETTE)
% 26 – Open polyline with arrow tip
% (DRAWING_ELEMENT_FLOAT_POLYLINE_ARROW)
% 27 – Open Bezier spline curve with arrow tip
% (DRAWING_ELEMENT_FLOAT_BEZIER_WITH_ARROW)
% 28 – Two connected lines for angle measurement
% (DRAWING_ELEMENT_FLOAT_ANGLE)
% 29 – Circle defined by three points on the perimeter
% (DRAWING_ELEMENT_FLOAT_CIRCLE_3POINT)
size; % Size of the block for the description of the current drawing element in bytes
lineWidth; % Line width used to draw the element in pixels.
measure; % The value 0 indicates that no measured characteristics are drawn for the drawing element. The value 1 indicates that the default set of measured characteristics is displayed. If the value is not 0 and not 1 the value contains flags for enabled types of measure values.
% The flags are:
% 0x00000002 – circumference
% 0x00000004 – area
% 0x00000008 – radius
% 0x00000010 - angle
% 0x00000020 – distance x
% 0x00000040 – distance y
additTextStartPointX; % Horizontal start of additional text in image memory coordinates
additTextStartPointY; % Vertical start of additional text in image memory coordinates
color;
valid;
knotWidth;
catchArea;
fontHeight;
fontWidth;
fontEscapement;
fontOrientation;
fontWeight;
fontItalic;
fontUnderline;
fontStrikeOut;
fontCharSet;
fontOutPrecision;
fontClipPrecision;
fontQuality;
fontPitchAndFamily;
fontFaceName;
disabled;
notMoveable;
% part specific to each drawing element type
specificValues; % struct containing the elements read
end
properties (Constant = true)
DRAWING_ELEMENT_FLOAT_TEXT = 13;
DRAWING_ELEMENT_FLOAT_LINE = 14;
DRAWING_ELEMENT_FLOAT_SCALE_BAR = 15;
DRAWING_ELEMENT_FLOAT_OPEN_ARROW = 16;
DRAWING_ELEMENT_FLOAT_CLOSED_ARROW = 17;
DRAWING_ELEMENT_FLOAT_RECTANGLE = 18;
DRAWING_ELEMENT_FLOAT_ELLIPSE = 19;
DRAWING_ELEMENT_FLOAT_CLOSED_POLYLINE = 20;
DRAWING_ELEMENT_FLOAT_OPEN_POLYLINE = 21;
DRAWING_ELEMENT_FLOAT_CLOSED_BEZIER = 22;
DRAWING_ELEMENT_FLOAT_OPEN_BEZIER = 23;
DRAWING_ELEMENT_FLOAT_CIRCLE = 24;
DRAWING_ELEMENT_FLOAT_PALETTE = 25;
DRAWING_ELEMENT_FLOAT_POLYLINE_ARROW = 26;
DRAWING_ELEMENT_FLOAT_BEZIER_WITH_ARROW = 27;
DRAWING_ELEMENT_FLOAT_ANGLE = 28;
DRAWING_ELEMENT_FLOAT_CIRCLE_3POINT = 29;
SIZE_FIXED_PART = 202;
end
methods
function obj = LSMDrawingElement(lsmPtr, byteOrder)
%LSMDRAWINGELEMENT Constructor
% Assumes the file pointer in the correct position already
obj.type = fread(lsmPtr, 1, 'int32', byteOrder);
obj.size = fread(lsmPtr, 1, 'int32', byteOrder);
obj.lineWidth = fread(lsmPtr, 1, 'int32', byteOrder);
obj.measure = fread(lsmPtr, 1, 'int32', byteOrder);
obj.additTextStartPointX = fread(lsmPtr, 1, 'double', byteOrder);
obj.additTextStartPointY = fread(lsmPtr, 1, 'double', byteOrder);
r = fread(lsmPtr, 1, 'uint8', byteOrder);
g = fread(lsmPtr, 1, 'uint8', byteOrder);
b = fread(lsmPtr, 1, 'uint8', byteOrder);
zero = fread(lsmPtr, 1, 'uint8', byteOrder);
if zero
error('LSMDrawingElement: Error parsing LSM file')
end
obj.color = [r, g, b];
obj.valid = fread(lsmPtr, 1, 'int32', byteOrder);
obj.knotWidth = fread(lsmPtr, 1, 'int32', byteOrder);
obj.catchArea = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontHeight = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontWidth = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontEscapement = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontOrientation = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontWeight = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontItalic = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontUnderline = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontStrikeOut = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontCharSet = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontOutPrecision = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontClipPrecision = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontQuality = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontPitchAndFamily = fread(lsmPtr, 1, 'int32', byteOrder);
obj.fontFaceName = fread(lsmPtr, 32, 'uint16', byteOrder);
obj.disabled = fread(lsmPtr, 1, 'uint16', byteOrder);
obj.notMoveable = fread(lsmPtr, 1, 'int32', byteOrder);
reserved = fread(lsmPtr, 8, 'int32', byteOrder);
if ~all(reserved == 0)
error('LSMDrawingElement: error reading from file')
end
obj.specificValues = struct;
if obj.type == obj.DRAWING_ELEMENT_FLOAT_TEXT
obj.specificValues.pointOriginX = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.pointOriginY = fread(lsmPtr, 1, 'double', byteOrder);
%16 = the two floats just read, 2 because we are reading int16
elementsToRead = (obj.size - obj.SIZE_FIXED_PART - 16) / 2;
textUI16 = fread(lsmPtr, elementsToRead, 'uint16', byteOrder);
textUI8 = typecast(textUI16, 'uint8');
obj.specificValues.text = native2unicode(textUI8);
elseif obj.type == DRAWING_ELEMENT_FLOAT_LINE || ...
obj.type == DRAWING_ELEMENT_FLOAT_SCALE_BAR || ...
obj.type == DRAWING_ELEMENT_FLOAT_OPEN_ARROW || ...
obj.type == DRAWING_ELEMENT_FLOAT_CLOSED_ARROW || ...
obj.type == DRAWING_ELEMENT_FLOAT_RECTANGLE || ...
obj.type == DRAWING_ELEMENT_FLOAT_PALETTE || ...
obj.type == DRAWING_ELEMENT_FLOAT_CIRCLE
obj.specificValues.numberKnots = fread(lsmPtr, 1, 'uint32', byteOrder);
if obj.specificValues.numberKnots ~= 2
error('LSMDrawingElement: error reading from file')
end
obj.specificValues.knot1X = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot1Y = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot2X = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot2Y = fread(lsmPtr, 1, 'double', byteOrder);
elseif obj.type == DRAWING_ELEMENT_FLOAT_ELLIPSE
obj.specificValues.numberKnots = fread(lsmPtr, 1, 'uint32', byteOrder);
if obj.specificValues.numberKnots ~= 4
error('LSMDrawingElement: error reading from file')
end
obj.specificValues.knot1X = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot1Y = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot2X = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot2Y = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot3X = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot3Y = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot4X = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot4Y = fread(lsmPtr, 1, 'double', byteOrder);
elseif obj.type == DRAWING_ELEMENT_FLOAT_CIRCLE_3POINT || ...
obj.type == DRAWING_ELEMENT_FLOAT_ANGLE
obj.specificValues.numberKnots = fread(lsmPtr, 1, 'uint32', byteOrder);
if obj.specificValues.numberKnots ~= 3
error('LSMDrawingElement: error reading from file')
end
obj.specificValues.knot1X = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot1Y = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot2X = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot2Y = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot3X = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knot3Y = fread(lsmPtr, 1, 'double', byteOrder);
elseif obj.type == DRAWING_ELEMENT_FLOAT_CLOSED_POLYLINE || ...
obj.type == DRAWING_ELEMENT_FLOAT_OPEN_POLYLINE || ...
obj.type == DRAWING_ELEMENT_FLOAT_POLYLINE_ARROW
obj.specificValues.numberKnots = fread(lsmPtr, 1, 'uint32', byteOrder);
obj.specificValues.knots = zeros(obj.specificValues.numberKnots, 2);
for k = 1:obj.specificValues.numberKnots
obj.specificValues.knots(k, 1) = fread(lsmPtr, 1, 'double', byteOrder);
obj.specificValues.knots(k, 2) = fread(lsmPtr, 1, 'double', byteOrder);
end
elseif obj.type < DRAWING_ELEMENT_FLOAT_TEXT
error('LSMDrawingElement: file created with LSMRelease 1.3 or previous. Unsupported')
else
error('LSMDrawingElement: unrecognized DrawingElement type')
end
end
end
end