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404.html

@@ -212,6 +212,18 @@
   </li>
 
     
+      
+      
+      
+
+
+  <li class="md-nav__item">
+    <a href="/gallery/" title="Gallery" class="md-nav__link">
+      Gallery
+    </a>
+  </li>
+
+    
   </ul>
 </nav>
                   </div>

Gallery/car.yml

@@ -0,0 +1,43 @@
+!!omap
+- name: car
+- parts:
+  - name: head
+    shapes:
+      libraries: ['from math import tan, radians, sin, cos', 'from pysketcher import *']
+  - name: constants
+    shapes:
+        R: 1.0    # radius of wheel
+        L: 4.0    # distance between wheels
+        H: 2.0    # height of vehicle body
+        w_1: 5.0  # position of front wheel
+  - name: frame
+    shapes:
+        xmax: w_1 + 2*L + 3*R
+        setframe:
+            action: drawing_tool.set_coordinate_system(xmin=0, xmax=xmax,
+                                   ymin=-1, ymax=2*R + 3*H,
+                                   axis=False)
+        wheel1: |
+                 Composition({'wheel': Circle(center=(w_1, R), radius=R),
+                    'cross': Composition({'cross1': Line((w_1,0),(w_1,2*R)),
+                    'cross2': Line((w_1-R,R), (w_1+R,R))})})
+        wheel2: 
+            formula: wheel1.copy()
+            transform: translate((L,0))
+
+        under: Rectangle(lower_left_corner=(w_1-2*R, 2*R),
+                  width=2*R + L + 2*R, height=H)
+        over: Rectangle(lower_left_corner=(w_1, 2*R + H),
+                  width=2.5*R, height=1.25*H)
+
+        wheels: | 
+                  Composition({'wheel1': wheel1, 'wheel2': wheel2})
+        body:  |
+                 Composition({'under': under, 'over': over})
+
+        vehicle: |
+                  Composition({'wheels': wheels, 'body': body})
+        ground: Wall(x=[R, xmax], y=[0, 0], thickness=-0.3*R)
+
+        car: |
+               Composition({'vehicle': vehicle, 'ground': ground})

Gallery/dryfriction.yml

@@ -0,0 +1,98 @@
+!!omap
+- name: unknown
+- parts:
+  - name: head
+    shapes:
+      libraries: ['from math import tan, radians, sin, cos', from pysketcher import
+          *]
+  - name: constants
+    shapes:
+      fontsize: 18       # size of the characters
+      g: 9.81            # constant gravity
+      theta: 30.0        # inclined plane angle
+      L: 10.0            # sketch sizing parameter
+      a: 1.0             #
+      xmin: 0.0          # sketech min Abscissa
+      ymin: -3.0         # sketech min Ordinate     
+      rl: 2.0            # rectangle width
+      rL: 1.0            # rectangle length
+  - name: frame
+    shapes:
+      setframe:          # sketch setup
+        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')
+      setblackline:      # default frame values and actions
+        action: drawing_tool.set_linecolor('black')
+      B: point(a+L,0)                    # wall right end
+      A: point(a,tan(radians(theta))*L)  # wall left end
+      normal_vec: point(sin(radians(theta)),cos(radians(theta)))   # Vector normal to wall
+      tangent_vec: point(cos(radians(theta)),-sin(radians(theta))) # Vector tangent to wall
+      help_line: Line(A,B)               # wall line
+      x: a + 3*L/10.                     # contact point Abscissa
+      y: help_line(x=x)                  # contact point Ordinate
+      contact: point(x, y)               # contact point: middle of the rectangle bottom edge
+      c: contact + rL/2*normal_vec
+  - name: body
+    shapes:
+      rectangle:
+        formula: Rectangle(contact, rl, rL)
+        style:
+          linecolor: blue
+          filled_curves: 
+              color: blue
+        transform: ['rotate(-theta, contact)', translate(-rl/2*tangent_vec)]
+      N:
+        formula: Force(contact - rl*normal_vec, contact, r'$N$', text_pos='start')
+        style:
+          linecolor: black
+      wheel:
+        formula: "Composition({'outer': rectangle})"
+        style:
+          shadow: 1
+      mc:
+        formula: Text(r'$c$', c)
+      body:
+        formula: "Composition({'wheel': wheel, 'N': N, 'mc': mc})"
+        style:
+          linecolor: black
+  - name: plan
+    shapes:
+      mB:
+        formula: Text(r'$B$',B)
+      mA:
+        formula: Text(r'$A$', A)
+      wall:
+        formula: Wall(x=[A[0], B[0]], y=[A[1], B[1]], thickness=-0.25,transparent=False)
+        style:
+          linecolor: black
+      x_const:
+        formula: Line(contact, contact + point(0,4))
+        style:
+          linestyle: dotted
+        transform: rotate(-theta, contact)
+      x_axis:
+        formula: Axis(start=contact+ 2*rl*normal_vec, length=2*rl,label='$x$', rotation_angle=-theta)
+      plan:
+        formula: "Composition({'body': body, 'inclined wall': wall, 'x start': x_const,\
+          \ 'x axis': x_axis, 'mA': mA, 'mB': mB})"
+  - name: friction
+    shapes:
+      mg:
+        formula: Gravity(c, rl, text='$Mg$')
+        style:
+          linecolor: black
+      angle:
+        formula: Arc_wText(r'$<bslash>theta$', center=B, radius=3, start_angle=180-theta,
+          arc_angle=theta, fontsize=fontsize)
+        style:
+          linecolor: black
+          linewidth: 1
+      ground:
+        formula: Line((B[0]-L/10., 0), (B[0]-L/2.,0))
+        stlye:
+          linecolor: black
+          linestyle: dashed
+          linewidth: 1
+      friction:
+        formula: "Composition({'plan': plan, 'ground': ground, 'mg': mg, 'angle':\
+          \ angle})"

Gallery/pendulum.yml

@@ -0,0 +1,52 @@
+!!omap
+- name: pendulum
+- parts:
+  - name: head
+    shapes:
+      libraries: ['from math import tan, radians, sin, cos', 'from pysketcher import *']
+  - name: constants
+    shapes:
+        H: 7.0
+        W: 6.0
+  - name: frame
+    shapes:
+        setframe:          # sketch setup
+            action: drawing_tool.set_coordinate_system(xmin=0, xmax=W,
+                                   ymin=0, ymax=H,
+                                   axis=False)
+        setblackline:      # default frame values and actions
+            action: drawing_tool.set_linecolor('blue')
+        L: 5*H/7          # length
+        P: (W/6, 0.85*H)  # rotation point
+        a: 40             # angle
+        vertical: 
+            formula: Line(P, P-point(0,L))
+            style:
+                linecolor: black
+                linewidth: 1
+        path: 
+            formula: Arc(P, L, -90, a)
+            style:
+                linecolor: black
+                linewidth: 1
+        angle: Arc_wText(r'$\theta$', P, L/4, -90, a, text_spacing=1/30.)
+
+        #rod: Line(P, P + L*point(sin(radians(a)), -L*cos(radians(a)))) is a less reliable alternative
+        mass_pt: path.geometric_features()['end']
+        rod: Line(P, mass_pt)
+
+        mass: 
+            formula: Circle(center=mass_pt, radius=L/20.)
+            style:
+                filled_curves: 
+                    color: 'blue'
+        rod_vec: rod.geometric_features()['end'] - rod.geometric_features()['start']
+        unit_rod_vec: unit_vec(rod_vec)
+        mass_symbol: Text('$m$', mass_pt + L/10*unit_rod_vec)
+
+        length: 
+            formula: Distance_wText(P, mass_pt, '$L$') # Displace length indication
+            transform: translate(L/15*point(cos(radians(a)), sin(radians(a))))
+        gravity: Gravity(start=P+point(0.8*L,0), length=L/3)
+
+        pendulum: "Composition({'body': mass, 'rod': rod,'vertical': vertical, 'theta': angle, 'path': path,'g': gravity, 'L': length, 'm': mass_symbol})"

Gallery/springdashpotmass.yml

@@ -0,0 +1,56 @@
+!!omap
+- name: springdashpotmass
+- parts:
+  - name: head
+    shapes:
+      libraries: ['from math import tan, radians, sin, cos', 'from pysketcher import *']
+  - name: constants
+    shapes:
+        L: 12.
+  - name: frame
+    shapes:
+        H: L/6
+        W: L/6
+        xmax: L
+        x: 0        
+        setframe:
+            action: drawing_tool.set_coordinate_system(xmin=-L, xmax=xmax,
+                                   ymin=-1, ymax=L+H,
+                                   axis=False,
+                                   instruction_file='tmp_mpl_spring_mass.py')
+        globallinecolor:
+            action: drawing_tool.set_linecolor('black')
+        d_start: (-L,2*H)
+        dashpot:
+            formula: Dashpot(start=d_start, total_length=L+x, width=W,
+                bar_length=3*H/2, dashpot_length=L/2, piston_pos=H+x)
+            transform: rotate(-90, d_start)
+        s_start: (-L,4*H)
+        spring: 
+            formula: Spring(start=s_start, length=L+x, bar_length=3*H/2, teeth=True)
+            transform: rotate(-90, s_start)
+        M: Rectangle((0,H), 4*H, 4*H).set_linewidth(4)
+        left_wall: Rectangle((-L,0),H/10,L).set_filled_curves(pattern='/')
+        ground: Wall(x=[-L/2,L], y=[0,0], thickness=-H/10)
+        wheel1: Circle((H,H/2), H/2)
+        wheel2: 
+            formula: wheel1.copy()
+            transform: translate(point(2*H, 0))
+
+        fontsize: 18
+        text_m: Text('$m$', (2*H, H+2*H), fontsize=fontsize)
+        text_ku: Text('$ku$', (-L/2, H+4*H), fontsize=fontsize)
+        text_bv: Text("$bu'$", (-L/2, H), fontsize=fontsize)
+        x_axis: Axis((2*H, L), H, '$u(t)$', fontsize=fontsize,
+                     label_spacing=(0.04, -0.01))
+        x_axis_start: 
+            formula: Line((2*H, L-H/4), (2*H, L+H/4))
+            style:
+                linewidth: 4
+
+        springdashpotmass: |
+                      Composition({
+                        'spring': spring, 'dashpot': dashpot, 'mass': M, 'left wall': left_wall,
+                        'ground': ground, 'wheel1': wheel1, 'wheel2': wheel2,
+                        'text_m': text_m, 'text_ku': text_ku,
+                        'x_axis': x_axis, 'x_axis_start': x_axis_start})

Gallery/springmass.yml

@@ -0,0 +1,51 @@
+!!omap
+- name: springmass
+- parts:
+  - name: head
+    shapes:
+      libraries: ['from math import tan, radians, sin, cos', 'from pysketcher import *']
+  - name: constants
+    shapes:
+        L: 12.
+  - name: frame
+    shapes:
+        H: L/6
+        W: L/6
+        xmax: L
+        x: 0        
+        setframe:
+            action: drawing_tool.set_coordinate_system(xmin=-L, xmax=xmax,
+                                   ymin=-1, ymax=L+H,
+                                   axis=False,
+                                   instruction_file='tmp_mpl_spring_mass.py')
+        globallinecolor:
+            action: drawing_tool.set_linecolor('black')
+        s_start: (-L,4*H)
+        spring: 
+            formula: Spring(start=s_start, length=L+x, bar_length=3*H/2, teeth=True)
+            transform: rotate(-90, s_start)
+        M: Rectangle((0,H), 4*H, 4*H).set_linewidth(4)
+        left_wall: Rectangle((-L,0),H/10,L).set_filled_curves(pattern='/')
+        ground: Wall(x=[-L/2,L], y=[0,0], thickness=-H/10)
+        wheel1: Circle((H,H/2), H/2)
+        wheel2: 
+            formula: wheel1.copy()
+            transform: translate(point(2*H, 0))
+
+        fontsize: 18
+        text_m: Text('$m$', (2*H, H+2*H), fontsize=fontsize)
+        text_ku: Text('$ku$', (-L/2, H+4*H), fontsize=fontsize)
+        text_bv: Text("$bu'$", (-L/2, H), fontsize=fontsize)
+        x_axis: Axis((2*H, L), H, '$u(t)$', fontsize=fontsize,
+                     label_spacing=(0.04, -0.01))
+        x_axis_start: 
+            formula: Line((2*H, L-H/4), (2*H, L+H/4))
+            style:
+                linewidth: 4
+
+        springmass: |
+                      Composition({
+                        'spring': spring, 'mass': M, 'left wall': left_wall,
+                        'ground': ground, 'wheel1': wheel1, 'wheel2': wheel2,
+                        'text_m': text_m, 'text_ku': text_ku,
+                        'x_axis': x_axis, 'x_axis_start': x_axis_start})

about/index.html

@@ -219,6 +219,18 @@
   </li>
 
     
+      
+      
+      
+
+
+  <li class="md-nav__item">
+    <a href="../gallery/" title="Gallery" class="md-nav__link">
+      Gallery
+    </a>
+  </li>
+
+    
   </ul>
 </nav>
                   </div>

index.html

@@ -226,6 +226,18 @@
   </li>
 
     
+      
+      
+      
+
+
+  <li class="md-nav__item">
+    <a href="gallery/" title="Gallery" class="md-nav__link">
+      Gallery
+    </a>
+  </li>
+
+    
   </ul>
 </nav>
                   </div>

learningbyexample/index.html

@@ -351,6 +351,18 @@
   </li>
 
     
+      
+      
+      
+
+
+  <li class="md-nav__item">
+    <a href="../gallery/" title="Gallery" class="md-nav__link">
+      Gallery
+    </a>
+  </li>
+
+    
   </ul>
 </nav>
                   </div>

presentation/index.html

@@ -276,6 +276,18 @@
   </li>
 
     
+      
+      
+      
+
+
+  <li class="md-nav__item">
+    <a href="../gallery/" title="Gallery" class="md-nav__link">
+      Gallery
+    </a>
+  </li>
+
+    
   </ul>
 </nav>
                   </div>

shapereference/index.html

@@ -822,6 +822,18 @@
   </li>
 
     
+      
+      
+      
+
+
+  <li class="md-nav__item">
+    <a href="../gallery/" title="Gallery" class="md-nav__link">
+      Gallery
+    </a>
+  </li>
+
+    
   </ul>
 </nav>
                   </div>

sitemap.xml

@@ -1,27 +1,31 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><url>
      <loc>None</loc>
-     <lastmod>2020-08-07</lastmod>
+     <lastmod>2020-08-09</lastmod>
      <changefreq>daily</changefreq>
     </url><url>
      <loc>None</loc>
-     <lastmod>2020-08-07</lastmod>
+     <lastmod>2020-08-09</lastmod>
      <changefreq>daily</changefreq>
     </url><url>
      <loc>None</loc>
-     <lastmod>2020-08-07</lastmod>
+     <lastmod>2020-08-09</lastmod>
      <changefreq>daily</changefreq>
     </url><url>
      <loc>None</loc>
-     <lastmod>2020-08-07</lastmod>
+     <lastmod>2020-08-09</lastmod>
      <changefreq>daily</changefreq>
     </url><url>
      <loc>None</loc>
-     <lastmod>2020-08-07</lastmod>
+     <lastmod>2020-08-09</lastmod>
      <changefreq>daily</changefreq>
     </url><url>
      <loc>None</loc>
-     <lastmod>2020-08-07</lastmod>
+     <lastmod>2020-08-09</lastmod>
+     <changefreq>daily</changefreq>
+    </url><url>
+     <loc>None</loc>
+     <lastmod>2020-08-09</lastmod>
      <changefreq>daily</changefreq>
     </url>
 </urlset>

yamlsketcher/index.html

@@ -310,6 +310,18 @@
   </li>
 
     
+      
+      
+      
+
+
+  <li class="md-nav__item">
+    <a href="../gallery/" title="Gallery" class="md-nav__link">
+      Gallery
+    </a>
+  </li>
+
+    
   </ul>
 </nav>
                   </div>
@@ -606,6 +618,20 @@ sketch.file2Sketch(&quot;dryfriction.yml&quot;)
           </a>
         
         
+          <a href="../gallery/" title="Gallery" class="md-footer-nav__link md-footer-nav__link--next" rel="next">
+            <div class="md-footer-nav__title">
+              <div class="md-ellipsis">
+                <span class="md-footer-nav__direction">
+                  Next
+                </span>
+                Gallery
+              </div>
+            </div>
+            <div class="md-footer-nav__button md-icon">
+              <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M4 11v2h12l-5.5 5.5 1.42 1.42L19.84 12l-7.92-7.92L10.5 5.5 16 11H4z"/></svg>
+            </div>
+          </a>
+        
       </nav>
     </div>