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<section id="bl-armatureconstraint-exp-pyobjectplus">
<h1>BL_ArmatureConstraint(EXP_PyObjectPlus)<a class="headerlink" href="#bl-armatureconstraint-exp-pyobjectplus" title="Link to this heading"></a></h1>
<p>base class — <a class="reference internal" href="bge.types.EXP_PyObjectPlus.html#bge.types.EXP_PyObjectPlus" title="bge.types.EXP_PyObjectPlus"><code class="xref py py-class docutils literal notranslate"><span class="pre">EXP_PyObjectPlus</span></code></a></p>
<dl class="py class">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">bge.types.</span></span><span class="sig-name descname"><span class="pre">BL_ArmatureConstraint</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint" title="Link to this definition"></a></dt>
<dd><p>Proxy to Armature Constraint. Allows to change constraint on the fly.
Obtained through <a class="reference internal" href="bge.types.BL_ArmatureObject.html#bge.types.BL_ArmatureObject" title="bge.types.BL_ArmatureObject"><code class="xref py py-class docutils literal notranslate"><span class="pre">BL_ArmatureObject</span></code></a>.constraints.</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Not all armature constraints are supported in the GE.</p>
</div>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.type">
<span class="sig-name descname"><span class="pre">type</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.type" title="Link to this definition"></a></dt>
<dd><p>Type of constraint, (read-only).</p>
<p>Use one of <a class="reference internal" href="bge.logic.html#armatureconstraint-constants-type"><span class="std std-ref">these constants</span></a>.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>integer, one of CONSTRAINT_TYPE_* constants</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.name">
<span class="sig-name descname"><span class="pre">name</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.name" title="Link to this definition"></a></dt>
<dd><p>Name of constraint constructed as <bone_name>:<constraint_name>. constraints list.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>string</p>
</dd>
</dl>
<p>This name is also the key subscript on <a class="reference internal" href="bge.types.BL_ArmatureObject.html#bge.types.BL_ArmatureObject" title="bge.types.BL_ArmatureObject"><code class="xref py py-class docutils literal notranslate"><span class="pre">BL_ArmatureObject</span></code></a>.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.enforce">
<span class="sig-name descname"><span class="pre">enforce</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.enforce" title="Link to this definition"></a></dt>
<dd><p>fraction of constraint effect that is enforced. Between 0 and 1.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>float</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.headtail">
<span class="sig-name descname"><span class="pre">headtail</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.headtail" title="Link to this definition"></a></dt>
<dd><p>Position of target between head and tail of the target bone: 0=head, 1=tail.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>float.</p>
</dd>
</dl>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Only used if the target is a bone (i.e target object is an armature.</p>
</div>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.lin_error">
<span class="sig-name descname"><span class="pre">lin_error</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.lin_error" title="Link to this definition"></a></dt>
<dd><p>runtime linear error (in Blender units) on constraint at the current frame.</p>
<p>This is a runtime value updated on each frame by the IK solver. Only available on IK constraint and iTaSC solver.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>float</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.rot_error">
<span class="sig-name descname"><span class="pre">rot_error</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.rot_error" title="Link to this definition"></a></dt>
<dd><p>Runtime rotation error (in radiant) on constraint at the current frame.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>float.</p>
</dd>
</dl>
<p>This is a runtime value updated on each frame by the IK solver. Only available on IK constraint and iTaSC solver.</p>
<p>It is only set if the constraint has a rotation part, for example, a CopyPose+Rotation IK constraint.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.target">
<span class="sig-name descname"><span class="pre">target</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.target" title="Link to this definition"></a></dt>
<dd><p>Primary target object for the constraint. The position of this object in the GE will be used as target for the constraint.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p><a class="reference internal" href="bge.types.KX_GameObject.html#bge.types.KX_GameObject" title="bge.types.KX_GameObject"><code class="xref py py-class docutils literal notranslate"><span class="pre">KX_GameObject</span></code></a>.</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.subtarget">
<span class="sig-name descname"><span class="pre">subtarget</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.subtarget" title="Link to this definition"></a></dt>
<dd><p>Secondary target object for the constraint. The position of this object in the GE will be used as secondary target for the constraint.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p><a class="reference internal" href="bge.types.KX_GameObject.html#bge.types.KX_GameObject" title="bge.types.KX_GameObject"><code class="xref py py-class docutils literal notranslate"><span class="pre">KX_GameObject</span></code></a>.</p>
</dd>
</dl>
<p>Currently this is only used for pole target on IK constraint.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.active">
<span class="sig-name descname"><span class="pre">active</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.active" title="Link to this definition"></a></dt>
<dd><p>True if the constraint is active.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>boolean</p>
</dd>
</dl>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>An inactive constraint does not update lin_error and rot_error.</p>
</div>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.ik_weight">
<span class="sig-name descname"><span class="pre">ik_weight</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.ik_weight" title="Link to this definition"></a></dt>
<dd><p>Weight of the IK constraint between 0 and 1.</p>
<p>Only defined for IK constraint.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>float</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.ik_type">
<span class="sig-name descname"><span class="pre">ik_type</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.ik_type" title="Link to this definition"></a></dt>
<dd><p>Type of IK constraint, (read-only).</p>
<p>Use one of <a class="reference internal" href="bge.logic.html#armatureconstraint-constants-ik-type"><span class="std std-ref">these constants</span></a>.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>integer.</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.ik_flag">
<span class="sig-name descname"><span class="pre">ik_flag</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.ik_flag" title="Link to this definition"></a></dt>
<dd><p>Combination of IK constraint option flags, read-only.</p>
<p>Use one of <a class="reference internal" href="bge.logic.html#armatureconstraint-constants-ik-flag"><span class="std std-ref">these constants</span></a>.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>integer</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.ik_dist">
<span class="sig-name descname"><span class="pre">ik_dist</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.ik_dist" title="Link to this definition"></a></dt>
<dd><p>Distance the constraint is trying to maintain with target, only used when ik_type=CONSTRAINT_IK_DISTANCE.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>float</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="bge.types.BL_ArmatureConstraint.ik_mode">
<span class="sig-name descname"><span class="pre">ik_mode</span></span><a class="headerlink" href="#bge.types.BL_ArmatureConstraint.ik_mode" title="Link to this definition"></a></dt>
<dd><p>Use one of <a class="reference internal" href="bge.logic.html#armatureconstraint-constants-ik-mode"><span class="std std-ref">these constants</span></a>.</p>
<p>Additional mode for IK constraint. Currently only used for Distance constraint:</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>integer</p>
</dd>
</dl>
</dd></dl>
</dd></dl>
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