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<h1>Source code for artv2_components.aim_helper</h1><div class="highlight"><pre>
<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
<span class="sd">"""</span>
<span class="sd">This module contains the class for handling aim mode on a component. Aim mode is a mode that can be toggled that</span>
<span class="sd">determines whether joints aim at their children when the joint mover controls are edited.</span>
<span class="sd">"""</span>
<span class="kn">import</span> <span class="nn">pymel.core</span> <span class="k">as</span> <span class="nn">pm</span>
<span class="kn">import</span> <span class="nn">artv2_utilities.general_utilities</span> <span class="k">as</span> <span class="nn">utils</span>
<div class="viewcode-block" id="AimHelper"><a class="viewcode-back" href="../../sections/tech_docs/components/aim_helper.html#artv2_components.aim_helper.AimHelper">[docs]</a><span class="k">class</span> <span class="nc">AimHelper</span><span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> Class that handles toggling aim mode on a component. Aim mode is a mode that can be toggled that</span>
<span class="sd"> determines whether joints aim at their children when the joint mover controls are moved or rotated. This setup</span>
<span class="sd"> is done using the joint mover markup tool and setting the attributes it adds concerning aim mode.</span>
<span class="sd"> The relevant attributes are:</span>
<span class="sd"> * Can Aim</span>
<span class="sd"> * Aim Joint</span>
<span class="sd"> * Aim Axis</span>
<span class="sd"> * Invert Aim Axis</span>
<span class="sd"> * Up Axis</span>
<span class="sd"> * Maintain Offset</span>
<span class="sd"> .. glossary::</span>
<span class="sd"> Can Aim</span>
<span class="sd"> Whether this joint should aim at another joint when aim mode is turned on.</span>
<span class="sd"> Aim Joint</span>
<span class="sd"> Which joint this joint should aim at when aim mode is turned on. (This is ignored if Can Aim is False)</span>
<span class="sd"> Aim Axis</span>
<span class="sd"> Which axis represents the aim axis. (This is ignored if Can Aim is False)</span>
<span class="sd"> Invert Aim Axis</span>
<span class="sd"> If the aim axis should be inverted. (If your aim axis is set to X, but needs to be -X, this would be True)</span>
<span class="sd"> (This is ignored if Can Aim is False)</span>
<span class="sd"> Up Axis</span>
<span class="sd"> The axis of the joint that is closes to the world up axis. (This is ignored if Can Aim is False)</span>
<span class="sd"> Maintain Offset</span>
<span class="sd"> This will probably not ever need to be used, but in the case of some special circumstance, this will create the</span>
<span class="sd"> aim constraint while maintaining offsets.</span>
<span class="sd"> (This is ignored if Can Aim is False)</span>
<span class="sd"> """</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">metanode</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> :param metanode: This is the network node from a component, like a leg or torso. It contains all of the</span>
<span class="sd"> metadata</span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_metanode</span> <span class="o">=</span> <span class="n">pm</span><span class="o">.</span><span class="n">PyNode</span><span class="p">(</span><span class="n">metanode</span><span class="p">)</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<div class="viewcode-block" id="AimHelper.toggle_aim_mode"><a class="viewcode-back" href="../../sections/tech_docs/components/aim_helper.html#artv2_components.aim_helper.AimHelper.toggle_aim_mode">[docs]</a> <span class="k">def</span> <span class="nf">toggle_aim_mode</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Toggles aim mode on a component. Aim mode determines whether joints aim at their children when the joint</span>
<span class="sd"> mover controls are moved or rotated. Which joints and their settings are setup using the joint mover markup</span>
<span class="sd"> tool.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metanode</span><span class="o">.</span><span class="n">isAiming</span><span class="o">.</span><span class="n">get</span><span class="p">():</span>
<span class="bp">self</span><span class="o">.</span><span class="n">tear_down_aim_mode</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setup_aim_mode</span><span class="p">()</span></div>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<div class="viewcode-block" id="AimHelper.setup_aim_mode"><a class="viewcode-back" href="../../sections/tech_docs/components/aim_helper.html#artv2_components.aim_helper.AimHelper.setup_aim_mode">[docs]</a> <span class="k">def</span> <span class="nf">setup_aim_mode</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Sets up the aim constraints on the joint mover controls that have aim mode setup.</span>
<span class="sd"> """</span>
<span class="n">aim_data</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_gather_aim_data</span><span class="p">()</span>
<span class="n">constraints</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">mover_grp</span> <span class="ow">in</span> <span class="n">aim_data</span><span class="p">:</span>
<span class="n">aim_target</span><span class="p">,</span> <span class="n">aim_axis</span><span class="p">,</span> <span class="n">up_axis</span><span class="p">,</span> <span class="n">invert</span><span class="p">,</span> <span class="n">offset</span> <span class="o">=</span> <span class="n">aim_data</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">mover_grp</span><span class="p">)</span>
<span class="n">constraint</span> <span class="o">=</span> <span class="n">pm</span><span class="o">.</span><span class="n">aimConstraint</span><span class="p">(</span><span class="n">aim_target</span><span class="p">,</span> <span class="n">mover_grp</span><span class="p">,</span>
<span class="n">aimVector</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_convert_axis</span><span class="p">(</span><span class="n">aim_axis</span><span class="p">,</span> <span class="n">invert</span><span class="p">),</span>
<span class="n">upVector</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_convert_axis</span><span class="p">(</span><span class="n">up_axis</span><span class="p">),</span>
<span class="n">worldUpType</span><span class="o">=</span><span class="s2">"objectrotation"</span><span class="p">,</span>
<span class="n">worldUpObject</span><span class="o">=</span><span class="n">aim_target</span><span class="p">,</span>
<span class="n">worldUpVector</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_convert_axis</span><span class="p">(</span><span class="n">pm</span><span class="o">.</span><span class="n">upAxis</span><span class="p">(</span><span class="n">q</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">axis</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span><span class="o">.</span><span class="n">upper</span><span class="p">()),</span>
<span class="n">maintainOffset</span><span class="o">=</span><span class="n">offset</span><span class="p">)</span>
<span class="n">constraints</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">constraint</span><span class="p">)</span>
<span class="n">utils</span><span class="o">.</span><span class="n">set_attribute</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_metanode</span><span class="p">,</span> <span class="s2">"isAiming"</span><span class="p">,</span> <span class="kc">True</span><span class="p">)</span>
<span class="k">for</span> <span class="n">constraint</span> <span class="ow">in</span> <span class="n">constraints</span><span class="p">:</span>
<span class="n">constraint</span><span class="o">.</span><span class="n">addAttr</span><span class="p">(</span><span class="s2">"metanode"</span><span class="p">,</span> <span class="n">at</span><span class="o">=</span><span class="s2">"message"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_metanode</span><span class="o">.</span><span class="n">aimModeConstraints</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="n">constraint</span><span class="o">.</span><span class="n">metanode</span><span class="p">)</span></div>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<div class="viewcode-block" id="AimHelper.tear_down_aim_mode"><a class="viewcode-back" href="../../sections/tech_docs/components/aim_helper.html#artv2_components.aim_helper.AimHelper.tear_down_aim_mode">[docs]</a> <span class="k">def</span> <span class="nf">tear_down_aim_mode</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Removes the aim constraints from the joint mover controls.</span>
<span class="sd"> """</span>
<span class="n">constraints</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metanode</span><span class="o">.</span><span class="n">aimModeConstraints</span><span class="o">.</span><span class="n">connections</span><span class="p">()</span>
<span class="k">for</span> <span class="n">each</span> <span class="ow">in</span> <span class="n">constraints</span><span class="p">:</span>
<span class="n">pm</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span><span class="n">each</span><span class="p">)</span>
<span class="n">utils</span><span class="o">.</span><span class="n">set_attribute</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_metanode</span><span class="p">,</span> <span class="s2">"isAiming"</span><span class="p">,</span> <span class="kc">False</span><span class="p">)</span></div>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="k">def</span> <span class="nf">_gather_aim_data</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">offset_movers</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metanode</span><span class="o">.</span><span class="n">offset_movers</span><span class="o">.</span><span class="n">connections</span><span class="p">()</span>
<span class="n">component_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metanode</span><span class="o">.</span><span class="n">componentName</span><span class="o">.</span><span class="n">get</span><span class="p">()</span>
<span class="n">aim_data</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">mover</span> <span class="ow">in</span> <span class="n">offset_movers</span><span class="p">:</span>
<span class="n">mover_grp</span> <span class="o">=</span> <span class="n">mover</span><span class="o">.</span><span class="n">getParent</span><span class="p">()</span>
<span class="n">jnt</span> <span class="o">=</span> <span class="n">mover</span><span class="o">.</span><span class="n">connected_joint</span><span class="o">.</span><span class="n">connections</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">if</span> <span class="n">jnt</span><span class="o">.</span><span class="n">hasAttr</span><span class="p">(</span><span class="s2">"canAim"</span><span class="p">):</span>
<span class="n">can_aim</span> <span class="o">=</span> <span class="n">jnt</span><span class="o">.</span><span class="n">canAim</span><span class="o">.</span><span class="n">get</span><span class="p">()</span>
<span class="k">if</span> <span class="n">can_aim</span><span class="p">:</span>
<span class="n">maintain_offsets</span> <span class="o">=</span> <span class="n">jnt</span><span class="o">.</span><span class="n">maintainOffset</span><span class="o">.</span><span class="n">get</span><span class="p">()</span>
<span class="n">aim_axis</span> <span class="o">=</span> <span class="n">jnt</span><span class="o">.</span><span class="n">aimAxis</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">asString</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="n">invert_aim</span> <span class="o">=</span> <span class="n">jnt</span><span class="o">.</span><span class="n">invertAimAxis</span><span class="o">.</span><span class="n">get</span><span class="p">()</span>
<span class="n">up_axis</span> <span class="o">=</span> <span class="n">jnt</span><span class="o">.</span><span class="n">upAxis</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">asString</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="n">aim_joint</span> <span class="o">=</span> <span class="n">jnt</span><span class="o">.</span><span class="n">aimJoint</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">asString</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="n">aim_joint_node</span> <span class="o">=</span> <span class="n">pm</span><span class="o">.</span><span class="n">PyNode</span><span class="p">(</span><span class="s2">"</span><span class="si">{0}</span><span class="s2">_</span><span class="si">{1}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">component_name</span><span class="p">,</span> <span class="n">aim_joint</span><span class="p">))</span>
<span class="n">aim_target_connections</span> <span class="o">=</span> <span class="n">aim_joint_node</span><span class="o">.</span><span class="n">attr</span><span class="p">(</span><span class="s2">"message"</span><span class="p">)</span><span class="o">.</span><span class="n">connections</span><span class="p">()</span>
<span class="k">for</span> <span class="n">connection</span> <span class="ow">in</span> <span class="n">aim_target_connections</span><span class="p">:</span>
<span class="k">if</span> <span class="nb">type</span><span class="p">(</span><span class="n">connection</span><span class="p">)</span> <span class="o">==</span> <span class="n">pm</span><span class="o">.</span><span class="n">nodetypes</span><span class="o">.</span><span class="n">Transform</span><span class="p">:</span>
<span class="n">aim_target</span> <span class="o">=</span> <span class="n">connection</span>
<span class="n">aim_data</span><span class="p">[</span><span class="n">mover_grp</span><span class="p">]</span> <span class="o">=</span> <span class="p">[</span><span class="n">aim_target</span><span class="p">,</span> <span class="n">aim_axis</span><span class="p">,</span> <span class="n">up_axis</span><span class="p">,</span> <span class="n">invert_aim</span><span class="p">,</span> <span class="n">maintain_offsets</span><span class="p">]</span>
<span class="k">return</span> <span class="n">aim_data</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<span class="c1"># # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #</span>
<div class="viewcode-block" id="AimHelper._convert_axis"><a class="viewcode-back" href="../../sections/tech_docs/components/aim_helper.html#artv2_components.aim_helper.AimHelper._convert_axis">[docs]</a> <span class="k">def</span> <span class="nf">_convert_axis</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">axis</span><span class="p">,</span> <span class="n">inverted</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Converts a simple string axis value (like X) to a float tuple (like (1.0, 0.0, 0.0))</span>
<span class="sd"> :return: A tuple containing three floats defining the given axis</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="n">axis</span> <span class="o">==</span> <span class="s2">"X"</span><span class="p">:</span>
<span class="k">if</span> <span class="n">inverted</span><span class="p">:</span>
<span class="k">return</span> <span class="p">[</span><span class="o">-</span><span class="mf">1.0</span><span class="p">,</span> <span class="mf">0.0</span><span class="p">,</span> <span class="mf">0.0</span><span class="p">]</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="p">[</span><span class="mf">1.0</span><span class="p">,</span> <span class="mf">0.0</span><span class="p">,</span> <span class="mf">0.0</span><span class="p">]</span>
<span class="k">if</span> <span class="n">axis</span> <span class="o">==</span> <span class="s2">"Y"</span><span class="p">:</span>
<span class="k">if</span> <span class="n">inverted</span><span class="p">:</span>
<span class="k">return</span> <span class="p">[</span><span class="mf">0.0</span><span class="p">,</span> <span class="o">-</span><span class="mf">1.0</span><span class="p">,</span> <span class="mf">0.0</span><span class="p">]</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="p">[</span><span class="mf">0.0</span><span class="p">,</span> <span class="mf">1.0</span><span class="p">,</span> <span class="mf">0.0</span><span class="p">]</span>
<span class="k">if</span> <span class="n">axis</span> <span class="o">==</span> <span class="s2">"Z"</span><span class="p">:</span>
<span class="k">if</span> <span class="n">inverted</span><span class="p">:</span>
<span class="k">return</span> <span class="p">[</span><span class="mf">0.0</span><span class="p">,</span> <span class="mf">0.0</span><span class="p">,</span> <span class="o">-</span><span class="mf">1.0</span><span class="p">]</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="p">[</span><span class="mf">0.0</span><span class="p">,</span> <span class="mf">0.0</span><span class="p">,</span> <span class="mf">1.0</span><span class="p">]</span></div></div>
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