static void DestroyThisBodyCallback (const NewtonBody* body, const NewtonJoint* contactJoint)
{
NewtonWorld* world;
NewtonMesh* topMesh;
NewtonMesh* bottomMesh;
NewtonMesh* effectMesh;
RenderPrimitive* srcPrimitive;
dMatrix matrix;
dFloat maxForce;
dVector point;
dVector dir0;
dVector dir1;
// Get the world;
world = NewtonBodyGetWorld (body);
// find a the strongest force
maxForce = 0.0f;
for (void* contact = NewtonContactJointGetFirstContact (contactJoint); contact; contact = NewtonContactJointGetNextContact (contactJoint, contact)) {
dVector force;
NewtonMaterial* material;
material = NewtonContactGetMaterial (contact);
NewtonMaterialGetContactForce (material, &force.m_x);
if (force.m_x > maxForce) {
dVector normal;
NewtonMaterialGetContactPositionAndNormal(material, &point[0], &normal[0]);
NewtonMaterialGetContactTangentDirections (material, &dir0[0], &dir0[0]);
}
}
// get the visual primitive
srcPrimitive = (RenderPrimitive*) NewtonBodyGetUserData (body);
// get the effect mesh that is use to create the debris pieces
effectMesh = srcPrimitive->m_specialEffect;
// calculate the cut plane plane
NewtonBodyGetMatrix (body, &matrix[0][0]);
dMatrix clipMatrix (dgGrammSchmidt(dir0) *
dYawMatrix(30.0f * 3.1416f/180.0f * RandomVariable(1.0f)) *
dRollMatrix(30.0f * 3.1416f/180.0f * RandomVariable(1.0f)));
clipMatrix.m_posit = point;
clipMatrix.m_posit.m_w = 1.0f;
clipMatrix = clipMatrix * matrix.Inverse();
// break the mesh into two pieces
NewtonMeshClip (effectMesh, meshClipper, &clipMatrix[0][0], &topMesh, &bottomMesh);
if (topMesh && bottomMesh) {
dFloat volume;
NewtonMesh* meshPartA = NULL;
NewtonMesh* meshPartB = NULL;
volume = NewtonConvexCollisionCalculateVolume (NewtonBodyGetCollision(body));
// the clipper was able to make a cut now we can create new debris piece for replacement
dMatrix clipMatrix1 (dgGrammSchmidt(dir1) *
dYawMatrix(30.0f * 3.1416f/180.0f * RandomVariable(1.0f)) *
dRollMatrix(30.0f * 3.1416f/180.0f * RandomVariable(1.0f)));
NewtonMeshClip (bottomMesh, meshClipper, &clipMatrix1[0][0], &meshPartA, &meshPartB);
if (meshPartA && meshPartB) {
// creat another split (you can make as many depend of the FPS)
CreateDebriPiece (body, meshPartA, volume);
CreateDebriPiece (body, meshPartB, volume);
NewtonMeshDestroy(meshPartA);
NewtonMeshDestroy(meshPartB);
} else {
CreateDebriPiece (body, bottomMesh, volume);
}
NewtonMeshDestroy(bottomMesh);
dMatrix clipMatrix2 (dgGrammSchmidt(dir1) *
dYawMatrix(30.0f * 3.1416f/180.0f * RandomVariable(1.0f)) *
dRollMatrix(30.0f * 3.1416f/180.0f * RandomVariable(1.0f)));
NewtonMeshClip (topMesh, meshClipper, &clipMatrix2[0][0], &meshPartA, &meshPartB);
if (meshPartA && meshPartB) {
// creat another split (you can make as many depend of the FPS)
CreateDebriPiece (body, meshPartA, volume);
CreateDebriPiece (body, meshPartB, volume);
NewtonMeshDestroy(meshPartA);
NewtonMeshDestroy(meshPartB);
} else {
CreateDebriPiece (body, topMesh, volume);
}
NewtonMeshDestroy(topMesh);
// remove the old visual from graphics world
SceneManager* system = (SceneManager*) NewtonWorldGetUserData(world);
delete srcPrimitive;
system->Remove(srcPrimitive);
// finally destroy this body;
NewtonDestroyBody(world, body);
}
}
void wxSVGCanvasCairo::DrawCanvasImage(wxSVGCanvasImage& canvasImage, cairo_surface_t* cairoSurface,
wxSVGMatrix& matrix, const wxCSSStyleDeclaration& style, wxSVGSVGElement& svgElem) {
if (cairoSurface == NULL)
return;
cairo_save(m_cr);
// ClipPath
if (style.GetClipPath().GetCSSPrimitiveType() == wxCSS_URI && style.GetClipPath().GetStringValue().length() > 1) {
wxString clipPathId = style.GetClipPath().GetStringValue().substr(1);
wxSVGClipPathElement* clipPathElem = (wxSVGClipPathElement*) svgElem.GetElementById(clipPathId);
if (clipPathElem && clipPathElem->GetDtd() == wxSVG_CLIPPATH_ELEMENT) {
clipPathElem->SetOwnerSVGElement(&svgElem);
clipPathElem->SetViewportElement(&svgElem);
wxSVGMatrix clipMatrix(matrix);
clipPathElem->UpdateMatrix(clipMatrix);
SetClipPath(clipPathElem, clipMatrix);
}
}
SetMatrix(m_cr, matrix);
// scale context
double x = canvasImage.m_x;
double y = canvasImage.m_y;
double scaleX = canvasImage.m_width / canvasImage.m_image.GetWidth();
double scaleY = canvasImage.m_height / canvasImage.m_image.GetHeight();
wxSVG_PRESERVEASPECTRATIO align = canvasImage.GetPreserveAspectRatio().GetAlign();
bool alignX = false;
if (align > wxSVG_PRESERVEASPECTRATIO_NONE) {
scaleY = canvasImage.m_height / canvasImage.GetDefaultHeight();
if (canvasImage.GetPreserveAspectRatio().GetMeetOrSlice() != wxSVG_MEETORSLICE_SLICE) {
alignX = scaleX > scaleY;
} else {
cairo_rectangle(m_cr, x, y, canvasImage.m_width, canvasImage.m_height);
cairo_clip(m_cr);
alignX = scaleX < scaleY;
}
if (alignX) {
scaleX = scaleY;
if (align == wxSVG_PRESERVEASPECTRATIO_XMIDYMIN
|| align == wxSVG_PRESERVEASPECTRATIO_XMIDYMID
|| align == wxSVG_PRESERVEASPECTRATIO_XMIDYMAX)
x += (canvasImage.m_width - canvasImage.GetDefaultWidth() * scaleX) / 2;
else if (align == wxSVG_PRESERVEASPECTRATIO_XMAXYMIN
|| align == wxSVG_PRESERVEASPECTRATIO_XMAXYMID
|| align == wxSVG_PRESERVEASPECTRATIO_XMAXYMAX)
x += canvasImage.m_width - canvasImage.GetDefaultWidth() * scaleX;
} else {
scaleY = scaleX;
if (align == wxSVG_PRESERVEASPECTRATIO_XMINYMID
|| align == wxSVG_PRESERVEASPECTRATIO_XMIDYMID
|| align == wxSVG_PRESERVEASPECTRATIO_XMAXYMID)
y += (canvasImage.m_height - canvasImage.GetDefaultHeight() * scaleY) / 2;
else if (align == wxSVG_PRESERVEASPECTRATIO_XMINYMAX
|| align == wxSVG_PRESERVEASPECTRATIO_XMIDYMAX
|| align == wxSVG_PRESERVEASPECTRATIO_XMAXYMAX)
y += canvasImage.m_height - canvasImage.GetDefaultHeight() * scaleY;
}
scaleY = scaleY * canvasImage.GetDefaultHeight() / canvasImage.m_image.GetHeight();
}
cairo_translate(m_cr, x, y);
cairo_scale(m_cr, scaleX, scaleY);
// prepare to draw the image
cairo_set_source_surface(m_cr, cairoSurface, 0, 0);
// use the original size here since the context is scaled already...
cairo_rectangle(m_cr, 0, 0, canvasImage.m_image.GetWidth(), canvasImage.m_image.GetHeight());
// paint
if (style.GetMask().GetCSSPrimitiveType() == wxCSS_URI && style.GetMask().GetStringValue().length() > 1) {
wxString maskId = style.GetMask().GetStringValue().substr(1);
wxSVGMaskElement* maskElem = (wxSVGMaskElement*) svgElem.GetElementById(maskId);
if (maskElem && maskElem->GetDtd() == wxSVG_MASK_ELEMENT) {
maskElem->SetOwnerSVGElement(&svgElem);
maskElem->SetViewportElement(&svgElem);
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
svgElem.GetWidth().GetAnimVal()/scaleX, svgElem.GetHeight().GetAnimVal()/scaleY);
cairo_t* cr = cairo_create(surface);
wxSVGMatrix maskMatrix;
maskMatrix = maskMatrix.Translate(x, y).ScaleNonUniform(scaleX, scaleY).Inverse();
DrawMask(cr, maskElem, maskMatrix, style, svgElem);
cairo_mask_surface(m_cr, surface, 0, 0);
cairo_destroy(cr);
cairo_surface_destroy(surface);
}
} else {
cairo_paint_with_alpha(m_cr, style.GetOpacity());
}
cairo_new_path(m_cr);
// clean up
cairo_restore(m_cr);
}
