Welcome to mirror list, hosted at ThFree Co, Russian Federation.

git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to 'extern/bullet2/src/BulletSoftBody/btDefaultSoftBodySolver.cpp')
-rw-r--r--extern/bullet2/src/BulletSoftBody/btDefaultSoftBodySolver.cpp151
1 files changed, 151 insertions, 0 deletions
diff --git a/extern/bullet2/src/BulletSoftBody/btDefaultSoftBodySolver.cpp b/extern/bullet2/src/BulletSoftBody/btDefaultSoftBodySolver.cpp
new file mode 100644
index 00000000000..c876ebf1fd6
--- /dev/null
+++ b/extern/bullet2/src/BulletSoftBody/btDefaultSoftBodySolver.cpp
@@ -0,0 +1,151 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "BulletCollision/CollisionShapes/btTriangleIndexVertexArray.h"
+#include "BulletCollision/CollisionDispatch/btCollisionObject.h"
+#include "BulletCollision/CollisionShapes/btCollisionShape.h"
+
+#include "btDefaultSoftBodySolver.h"
+#include "BulletCollision/CollisionShapes/btCapsuleShape.h"
+#include "BulletSoftBody/btSoftBody.h"
+
+
+btDefaultSoftBodySolver::btDefaultSoftBodySolver()
+{
+ // Initial we will clearly need to update solver constants
+ // For now this is global for the cloths linked with this solver - we should probably make this body specific
+ // for performance in future once we understand more clearly when constants need to be updated
+ m_updateSolverConstants = true;
+}
+
+btDefaultSoftBodySolver::~btDefaultSoftBodySolver()
+{
+}
+
+// In this case the data is already in the soft bodies so there is no need for us to do anything
+void btDefaultSoftBodySolver::copyBackToSoftBodies()
+{
+
+}
+
+void btDefaultSoftBodySolver::optimize( btAlignedObjectArray< btSoftBody * > &softBodies , bool forceUpdate)
+{
+ m_softBodySet.copyFromArray( softBodies );
+}
+
+void btDefaultSoftBodySolver::updateSoftBodies( )
+{
+ for ( int i=0; i < m_softBodySet.size(); i++)
+ {
+ btSoftBody* psb=(btSoftBody*)m_softBodySet[i];
+ if (psb->isActive())
+ {
+ psb->integrateMotion();
+ }
+ }
+} // updateSoftBodies
+
+bool btDefaultSoftBodySolver::checkInitialized()
+{
+ return true;
+}
+
+void btDefaultSoftBodySolver::solveConstraints( float solverdt )
+{
+ // Solve constraints for non-solver softbodies
+ for(int i=0; i < m_softBodySet.size(); ++i)
+ {
+ btSoftBody* psb = static_cast<btSoftBody*>(m_softBodySet[i]);
+ if (psb->isActive())
+ {
+ psb->solveConstraints();
+ }
+ }
+} // btDefaultSoftBodySolver::solveConstraints
+
+
+void btDefaultSoftBodySolver::copySoftBodyToVertexBuffer( const btSoftBody *const softBody, btVertexBufferDescriptor *vertexBuffer )
+{
+ // Currently only support CPU output buffers
+ // TODO: check for DX11 buffers. Take all offsets into the same DX11 buffer
+ // and use them together on a single kernel call if possible by setting up a
+ // per-cloth target buffer array for the copy kernel.
+
+ if( vertexBuffer->getBufferType() == btVertexBufferDescriptor::CPU_BUFFER )
+ {
+ const btAlignedObjectArray<btSoftBody::Node> &clothVertices( softBody->m_nodes );
+ int numVertices = clothVertices.size();
+
+ const btCPUVertexBufferDescriptor *cpuVertexBuffer = static_cast< btCPUVertexBufferDescriptor* >(vertexBuffer);
+ float *basePointer = cpuVertexBuffer->getBasePointer();
+
+ if( vertexBuffer->hasVertexPositions() )
+ {
+ const int vertexOffset = cpuVertexBuffer->getVertexOffset();
+ const int vertexStride = cpuVertexBuffer->getVertexStride();
+ float *vertexPointer = basePointer + vertexOffset;
+
+ for( int vertexIndex = 0; vertexIndex < numVertices; ++vertexIndex )
+ {
+ btVector3 position = clothVertices[vertexIndex].m_x;
+ *(vertexPointer + 0) = position.getX();
+ *(vertexPointer + 1) = position.getY();
+ *(vertexPointer + 2) = position.getZ();
+ vertexPointer += vertexStride;
+ }
+ }
+ if( vertexBuffer->hasNormals() )
+ {
+ const int normalOffset = cpuVertexBuffer->getNormalOffset();
+ const int normalStride = cpuVertexBuffer->getNormalStride();
+ float *normalPointer = basePointer + normalOffset;
+
+ for( int vertexIndex = 0; vertexIndex < numVertices; ++vertexIndex )
+ {
+ btVector3 normal = clothVertices[vertexIndex].m_n;
+ *(normalPointer + 0) = normal.getX();
+ *(normalPointer + 1) = normal.getY();
+ *(normalPointer + 2) = normal.getZ();
+ normalPointer += normalStride;
+ }
+ }
+ }
+} // btDefaultSoftBodySolver::copySoftBodyToVertexBuffer
+
+void btDefaultSoftBodySolver::processCollision( btSoftBody* softBody, btSoftBody* otherSoftBody)
+{
+ softBody->defaultCollisionHandler( otherSoftBody);
+}
+
+// For the default solver just leave the soft body to do its collision processing
+void btDefaultSoftBodySolver::processCollision( btSoftBody *softBody, btCollisionObject* collisionObject )
+{
+ softBody->defaultCollisionHandler( collisionObject );
+} // btDefaultSoftBodySolver::processCollision
+
+
+void btDefaultSoftBodySolver::predictMotion( float timeStep )
+{
+ for ( int i=0; i < m_softBodySet.size(); ++i)
+ {
+ btSoftBody* psb = m_softBodySet[i];
+
+ if (psb->isActive())
+ {
+ psb->predictMotion(timeStep);
+ }
+ }
+}
+