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@@ -255,8 +255,22 @@
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<ul class="md-nav__list">
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<li class="md-nav__item">
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- <a href="#libraries-construction-variables-frame" class="md-nav__link">
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- Libraries, Construction Variables, Frame
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+ <a href="#libraries" class="md-nav__link">
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+ Libraries
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+ </a>
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+
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+</li>
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+
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+ <li class="md-nav__item">
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+ <a href="#constants-construction-parameters" class="md-nav__link">
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+ Constants: Construction parameters
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+ </a>
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+
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+</li>
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+
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+ <li class="md-nav__item">
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+ <a href="#frame-core-geometric-parameters" class="md-nav__link">
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+ Frame: core geometric parameters
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</a>
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</li>
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@@ -386,8 +400,22 @@
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<ul class="md-nav__list">
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<li class="md-nav__item">
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- <a href="#libraries-construction-variables-frame" class="md-nav__link">
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- Libraries, Construction Variables, Frame
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+ <a href="#libraries" class="md-nav__link">
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+ Libraries
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+ </a>
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+
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+</li>
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+
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+ <li class="md-nav__item">
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+ <a href="#constants-construction-parameters" class="md-nav__link">
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+ Constants: Construction parameters
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+ </a>
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+
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+</li>
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+
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+ <li class="md-nav__item">
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+ <a href="#frame-core-geometric-parameters" class="md-nav__link">
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+ Frame: core geometric parameters
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</a>
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</li>
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@@ -501,6 +529,12 @@ A skertcher object is composed as follow:</p>
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</ul>
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</li>
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<li>this is stored in the head string thereafter</li>
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+<li>The example uses the following objects<ul>
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+<li>libraries: setting the libraries used for this sketch</li>
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+<li>constants: all the sketch dimensionning data</li>
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+<li>frame: all the shapes or geometric objects which will be used by the other shapes</li>
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+</ul>
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+</li>
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</ul>
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</li>
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<li><strong>Sketcher Objects</strong><ul>
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@@ -508,7 +542,7 @@ A skertcher object is composed as follow:</p>
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<li>May be aggregated using the composition object</li>
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<li>Composition can be made of composition object (recursive behaviour)</li>
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<li>Grouping leafs and composition will be further used to apply transformation latter on (based on the "physics")</li>
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-<li>The example presents three group of objects<ul>
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+<li>The example uese three group of shapes<ul>
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<li>The body object</li>
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<li>The plan object</li>
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<li>The friction main object</li>
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@@ -519,10 +553,16 @@ A skertcher object is composed as follow:</p>
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</ul>
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</li>
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</ul>
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-<h4 id="libraries-construction-variables-frame">Libraries, Construction Variables, Frame</h4>
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-<pre><code class="python">head = """\
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-libraries: ["from math import tan, radians, sin, cos","from pysketcher import *"]
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-fontsize: 18
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+<h4 id="libraries">Libraries</h4>
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+<pre><code class="python">libraries = {'name': "head",
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+'shapes':"""\
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+libraries: ["from math import tan, radians, sin, cos","from pysketcher import *"]"""}
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+</code></pre>
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+
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+<h4 id="constants-construction-parameters">Constants: Construction parameters</h4>
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+<pre><code class="python">constants = {'name': "constants",
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+'shapes':"""\
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+fontsize: 18 # size of the characters
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g: 9.81 # constant gravity
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theta: 30.0 # inclined plane angle
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L: 10.0 # sketch sizing parameter
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@@ -531,6 +571,12 @@ xmin: 0.0 # sketech min Abscissa
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ymin: -3.0 # sketech min Ordinate
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rl: 2.0 # rectangle width
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rL: 1.0 # rectangle length
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+"""}
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+</code></pre>
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+
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+<h4 id="frame-core-geometric-parameters">Frame: core geometric parameters</h4>
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+<pre><code class="python">frame = {'name': "frame",
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+'shapes':"""\
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setframe: # sketch setup
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action: "drawing_tool.set_coordinate_system(xmin=xmin-L/5, xmax=xmin+1.5*L,ymin=ymin, ymax=ymin+1.5*L,instruction_file='tmp_mpl_friction.py')"
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setblackline: # default frame values and actions
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@@ -540,15 +586,16 @@ A: point(a,tan(radians(theta))*L) # wall left end
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normal_vec: point(sin(radians(theta)),cos(radians(theta))) # Vector normal to wall
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tangent_vec: point(cos(radians(theta)),-sin(radians(theta))) # Vector tangent to wall
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help_line: Line(A,B) # wall line
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-x: a + 3*L/10.
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-y: help_line(x=x)
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-contact: point(x, y)
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+x: a + 3*L/10. # contact point Abscissa
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+y: help_line(x=x) # contact point Ordinate
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+contact: point(x, y) # contact point: middle of the rectangle bottom edge
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c: contact + rL/2*normal_vec
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-"""
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+"""}
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</code></pre>
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<h4 id="the-body-object">The body object</h4>
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-<pre><code class="python">body="""\
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+<pre><code class="python">body={'name': "body",
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+'shapes':"""\
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rectangle:
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formula: Rectangle(contact, rl, rL)
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style:
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@@ -570,11 +617,12 @@ body:
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formula: "Composition({'wheel': wheel, 'N': N, 'mc': mc})"
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style:
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linecolor: black
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-"""
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+"""}
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</code></pre>
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<h4 id="the-plan-object">The plan object</h4>
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-<pre><code class="python">plan="""\
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+<pre><code class="python">plan={'name': "plan",
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+'shapes':"""\
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mB:
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formula: Text(r'$B$',B)
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mA:
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@@ -592,11 +640,12 @@ x_axis:
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formula: "Axis(start=contact+ 2*rl*normal_vec, length=2*rl,label='$x$', rotation_angle=-theta)"
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plan:
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formula: "Composition({'body': body, 'inclined wall': wall, 'x start': x_const, 'x axis': x_axis, 'mA': mA, 'mB': mB})"
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-"""
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+"""}
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</code></pre>
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<h4 id="the-friction-sketch">The friction sketch</h4>
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-<pre><code class="python">friction="""\
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+<pre><code class="python">friction={'name': "friction",
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+'shapes':"""\
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mg:
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formula: Gravity(c, rl, text='$Mg$')
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style:
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@@ -614,19 +663,25 @@ ground:
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linewidth: 1
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friction:
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formula: "Composition({'plan': plan, 'ground': ground, 'mg': mg, 'angle': angle})"
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-"""
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+"""}
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</code></pre>
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<h3 id="using-the-parser">Using the parser</h3>
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-<p>To parse the above example, the following code do the job.
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-1. the head must be used first as all the other bits needs one or more variable it defines.
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-2. After, any other string can be parsed, the order just need to respect precedence (if one object uses another one it must be parsed after)
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-3. this setting allows naturally a modular definition of sketch objects</p>
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+<p>To parse the above example, the following code do the job.</p>
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+<ol>
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+<li>libraries, constants and frame must be used first as all the other bits needs one or more variable they defines.</li>
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+<li>After, any other sketch can be parsed, the order just need to respect precedence (if one object uses another it must be parsed after)</li>
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+<li>this setting allows naturally a modular definition of sketch objects</li>
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+</ol>
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+<p>The parser checks for syntax precedence and warns of any detected error.</p>
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<pre><code class="python">myfig = {}
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-sketchParse(head,myfig)
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-sketchParse(body,myfig)
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-sketchParse(plan,myfig)
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-sketchParse(friction,myfig)
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+if sketchParse(libraries,myfig):
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+ if sketchParse(constants,myfig):
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+ if sketchParse(frame,myfig):
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+ if sketchParse(body,myfig):
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+ if sketchParse(plan,myfig):
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+ if sketchParse(friction,myfig):
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+ print("success")
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</code></pre>
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<h3 id="friction-sketch-hierarchy">"friction" sketch hierarchy</h3>
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