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Differential D2457 Diff 8102 source/gameengine/Ketsji/KX_Camera.cpp

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source/gameengine/Ketsji/KX_Camera.cpp

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#include "glew-mx.h" #include "glew-mx.h"
#include "KX_Camera.h" #include "KX_Camera.h"
#include "KX_Scene.h" #include "KX_Scene.h"
#include "KX_PythonInit.h" #include "KX_Globals.h"
#include "EXP_Python.h" #include "EXP_Python.h"
#include "KX_PyMath.h" #include "KX_PyMath.h"
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m_frustum_culling(frustum_culling), m_frustum_culling(frustum_culling),
m_set_projection_matrix(false), m_set_projection_matrix(false),
m_set_frustum_center(false), m_set_frustum_center(false),
m_delete_node(delete_node) m_delete_node(delete_node),
m_lodDistanceFactor(1.0f)
{ {
// setting a name would be nice... // setting a name would be nice...
m_name = "cam"; m_name = "cam";
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const MT_Point3 KX_Camera::GetCameraLocation() const const MT_Vector3 KX_Camera::GetCameraLocation() const
{ {
/* this is the camera locatio in cam coords... */ /* this is the camera locatio in cam coords... */
//return m_trans1.getOrigin(); //return m_trans1.getOrigin();
//return MT_Point3(0,0,0); <----- //return MT_Vector3(0,0,0); <-----
/* .... I want it in world coords */ /* .... I want it in world coords */
//MT_Transform trans; //MT_Transform trans;
//trans.setBasis(NodeGetWorldOrientation()); //trans.setBasis(NodeGetWorldOrientation());
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return &m_camdata; return &m_camdata;
} }
float KX_Camera::GetLodDistanceFactor() const
{
return m_lodDistanceFactor;
}
void KX_Camera::SetLodDistanceFactor(float lodfactor)
{
m_lodDistanceFactor = lodfactor;
}
void KX_Camera::ExtractClipPlanes() void KX_Camera::ExtractClipPlanes()
{ {
if (!m_dirty) if (!m_dirty)
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// frustum projection // frustum projection
// detect which of the corner of the far clipping plane is the farthest to the origin // detect which of the corner of the far clipping plane is the farthest to the origin
MT_Vector4 nfar; // far point in device normalized coordinate MT_Vector4 nfar; // far point in device normalized coordinate
MT_Point3 farpoint; // most extreme far point in camera coordinate MT_Vector3 farpoint; // most extreme far point in camera coordinate
MT_Point3 nearpoint;// most extreme near point in camera coordinate MT_Vector3 nearpoint;// most extreme near point in camera coordinate
MT_Point3 farcenter(0.0f, 0.0f, 0.0f);// center of far cliping plane in camera coordinate MT_Vector3 farcenter(0.0f, 0.0f, 0.0f);// center of far cliping plane in camera coordinate
MT_Scalar F=-1.0f, N; // square distance of far and near point to origin MT_Scalar F=-1.0f, N; // square distance of far and near point to origin
MT_Scalar f, n; // distance of far and near point to z axis. f is always > 0 but n can be < 0 MT_Scalar f, n; // distance of far and near point to z axis. f is always > 0 but n can be < 0
MT_Scalar e, s; // far and near clipping distance (<0) MT_Scalar e, s; // far and near clipping distance (<0)
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// tmp value // tmp value
MT_Vector4 npoint(1.0f, 1.0f, 1.0f, 1.0f); MT_Vector4 npoint(1.0f, 1.0f, 1.0f, 1.0f);
MT_Vector4 hpoint; MT_Vector4 hpoint;
MT_Point3 point; MT_Vector3 point;
MT_Scalar len; MT_Scalar len;
for (int i=0; i<4; i++) for (int i=0; i<4; i++)
{ {
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e = farpoint[2]; e = farpoint[2];
s = nearpoint[2]; s = nearpoint[2];
// projection on XY plane for distance to axis computation // projection on XY plane for distance to axis computation
MT_Point2 farxy(farpoint[0], farpoint[1]); MT_Vector2 farxy(farpoint[0], farpoint[1]);
// f is forced positive by construction // f is forced positive by construction
f = farxy.length(); f = farxy.length();
// get corresponding point on the near plane // get corresponding point on the near plane
farxy *= s/e; farxy *= s/e;
// this formula preserve the sign of n // this formula preserve the sign of n
n = f*s/e - MT_Point2(nearpoint[0]-farxy[0], nearpoint[1]-farxy[1]).length(); n = f*s/e - MT_Vector2(nearpoint[0]-farxy[0], nearpoint[1]-farxy[1]).length();
c = MT_Point2(farcenter[0], farcenter[1]).length()/e; c = MT_Vector2(farcenter[0], farcenter[1]).length()/e;
// the big formula, it simplifies to (F-N)/(2(e-s)) for the symmetric case // the big formula, it simplifies to (F-N)/(2(e-s)) for the symmetric case
z = (F-N)/(2.0f*(e-s+c*(f-n))); z = (F-N)/(2.0f*(e-s+c*(f-n)));
m_frustum_center = MT_Point3(farcenter[0]*z/e, farcenter[1]*z/e, z); m_frustum_center = MT_Vector3(farcenter[0]*z/e, farcenter[1]*z/e, z);
m_frustum_radius = m_frustum_center.distance(farpoint); m_frustum_radius = m_frustum_center.distance(farpoint);
} }
else else
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hfar = clip_camcs_matrix*hfar; hfar = clip_camcs_matrix*hfar;
// Tranform to 3d camera local space. // Tranform to 3d camera local space.
MT_Point3 nearpoint(hnear[0]/hnear[3], hnear[1]/hnear[3], hnear[2]/hnear[3]); MT_Vector3 nearpoint(hnear[0]/hnear[3], hnear[1]/hnear[3], hnear[2]/hnear[3]);
MT_Point3 farpoint(hfar[0]/hfar[3], hfar[1]/hfar[3], hfar[2]/hfar[3]); MT_Vector3 farpoint(hfar[0]/hfar[3], hfar[1]/hfar[3], hfar[2]/hfar[3]);
// just use mediant point // just use mediant point
m_frustum_center = (farpoint + nearpoint)*0.5f; m_frustum_center = (farpoint + nearpoint)*0.5f;
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m_set_frustum_center = true; m_set_frustum_center = true;
} }
bool KX_Camera::PointInsideFrustum(const MT_Point3& x) bool KX_Camera::PointInsideFrustum(const MT_Vector3& x)
{ {
ExtractClipPlanes(); ExtractClipPlanes();
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return true; return true;
} }
int KX_Camera::BoxInsideFrustum(const MT_Point3 *box) int KX_Camera::BoxInsideFrustum(const MT_Vector3 *box)
{ {
ExtractClipPlanes(); ExtractClipPlanes();
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return INTERSECT; return INTERSECT;
} }
int KX_Camera::SphereInsideFrustum(const MT_Point3& center, const MT_Scalar &radius) int KX_Camera::SphereInsideFrustum(const MT_Vector3& center, const MT_Scalar &radius)
{ {
ExtractFrustumSphere(); ExtractFrustumSphere();
if (center.distance2(m_frustum_center) > (radius + m_frustum_radius)*(radius + m_frustum_radius)) if (center.distance2(m_frustum_center) > (radius + m_frustum_radius)*(radius + m_frustum_radius))
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KX_PYATTRIBUTE_RW_FUNCTION("far", KX_Camera, pyattr_get_far, pyattr_set_far), KX_PYATTRIBUTE_RW_FUNCTION("far", KX_Camera, pyattr_get_far, pyattr_set_far),
KX_PYATTRIBUTE_RW_FUNCTION("shift_x", KX_Camera, pyattr_get_shift_x, pyattr_set_shift_x), KX_PYATTRIBUTE_RW_FUNCTION("shift_x", KX_Camera, pyattr_get_shift_x, pyattr_set_shift_x),
KX_PYATTRIBUTE_RW_FUNCTION("shift_y", KX_Camera, pyattr_get_shift_y, pyattr_set_shift_y), KX_PYATTRIBUTE_RW_FUNCTION("shift_y", KX_Camera, pyattr_get_shift_y, pyattr_set_shift_y),
KX_PYATTRIBUTE_FLOAT_RW("lodDistanceFactor", 0.0f, FLT_MAX, KX_Camera, m_lodDistanceFactor),
KX_PYATTRIBUTE_RW_FUNCTION("useViewport", KX_Camera, pyattr_get_use_viewport, pyattr_set_use_viewport), KX_PYATTRIBUTE_RW_FUNCTION("useViewport", KX_Camera, pyattr_get_use_viewport, pyattr_set_use_viewport),
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KX_PYATTRIBUTE_RO_FUNCTION("OUTSIDE", KX_Camera, pyattr_get_OUTSIDE), KX_PYATTRIBUTE_RO_FUNCTION("OUTSIDE", KX_Camera, pyattr_get_OUTSIDE),
KX_PYATTRIBUTE_RO_FUNCTION("INTERSECT", KX_Camera, pyattr_get_INTERSECT), KX_PYATTRIBUTE_RO_FUNCTION("INTERSECT", KX_Camera, pyattr_get_INTERSECT),
{ NULL } //Sentinel KX_PYATTRIBUTE_NULL //Sentinel
}; };
PyTypeObject KX_Camera::Type = { PyTypeObject KX_Camera::Type = {
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float radius; float radius;
if (PyArg_ParseTuple(args, "Of:sphereInsideFrustum", &pycenter, &radius)) if (PyArg_ParseTuple(args, "Of:sphereInsideFrustum", &pycenter, &radius))
{ {
MT_Point3 center; MT_Vector3 center;
if (PyVecTo(pycenter, center)) if (PyVecTo(pycenter, center))
{ {
return PyLong_FromLong(SphereInsideFrustum(center, radius)); /* new ref */ return PyLong_FromLong(SphereInsideFrustum(center, radius)); /* new ref */
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return NULL; return NULL;
} }
MT_Point3 box[8]; MT_Vector3 box[8];
for (unsigned int p = 0; p < 8 ; p++) for (unsigned int p = 0; p < 8 ; p++)
{ {
PyObject *item = PySequence_GetItem(value, p); /* new ref */ PyObject *item = PySequence_GetItem(value, p); /* new ref */
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"\t\t# Box is outside the frustum !\n" "\t\t# Box is outside the frustum !\n"
) )
{ {
MT_Point3 point; MT_Vector3 point;
if (PyVecTo(value, point)) if (PyVecTo(value, point))
{ {
return PyLong_FromLong(PointInsideFrustum(point)); /* new ref */ return PyLong_FromLong(PointInsideFrustum(point)); /* new ref */
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"\tie: [[1.0, 0.0, 0.0, 0.0], [0.0, 1.0, 0.0, 0.0], [0.0, 0.0, 1.0, 0.0], [0.0, 0.0, 0.0, 1.0]])\n" "\tie: [[1.0, 0.0, 0.0, 0.0], [0.0, 1.0, 0.0, 0.0], [0.0, 0.0, 1.0, 0.0], [0.0, 0.0, 0.0, 1.0]])\n"
) )
{ {
return PyObjectFrom(GetCameraToWorld()); /* new ref */ return PyObjectFrom(MT_Matrix4x4(GetCameraToWorld())); /* new ref */
} }
KX_PYMETHODDEF_DOC_NOARGS(KX_Camera, getWorldToCamera, KX_PYMETHODDEF_DOC_NOARGS(KX_Camera, getWorldToCamera,
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"\tie: [[1.0, 0.0, 0.0, 0.0], [0.0, 1.0, 0.0, 0.0], [0.0, 0.0, 1.0, 0.0], [0.0, 0.0, 0.0, 1.0]])\n" "\tie: [[1.0, 0.0, 0.0, 0.0], [0.0, 1.0, 0.0, 0.0], [0.0, 0.0, 1.0, 0.0], [0.0, 0.0, 0.0, 1.0]])\n"
) )
{ {
return PyObjectFrom(GetWorldToCamera()); /* new ref */ return PyObjectFrom(MT_Matrix4x4(GetWorldToCamera())); /* new ref */
} }
KX_PYMETHODDEF_DOC_VARARGS(KX_Camera, setViewport, KX_PYMETHODDEF_DOC_VARARGS(KX_Camera, setViewport,
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"setOnTop()\n" "setOnTop()\n"
"Sets this camera's viewport on top\n") "Sets this camera's viewport on top\n")
{ {
class KX_Scene* scene = KX_GetActiveScene(); GetScene()->SetCameraOnTop(this);
scene->SetCameraOnTop(this);
Py_RETURN_NONE; Py_RETURN_NONE;
} }
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return PY_SET_ATTR_SUCCESS; return PY_SET_ATTR_SUCCESS;
} }
PyObject *KX_Camera::pyattr_get_projection_matrix(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef) PyObject *KX_Camera::pyattr_get_projection_matrix(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{ {
KX_Camera* self = static_cast<KX_Camera*>(self_v); KX_Camera* self = static_cast<KX_Camera*>(self_v);
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PyObject *KX_Camera::pyattr_get_modelview_matrix(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef) PyObject *KX_Camera::pyattr_get_modelview_matrix(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{ {
KX_Camera* self = static_cast<KX_Camera*>(self_v); KX_Camera* self = static_cast<KX_Camera*>(self_v);
return PyObjectFrom(self->GetWorldToCamera()); return PyObjectFrom(MT_Matrix4x4(self->GetWorldToCamera()));
} }
PyObject *KX_Camera::pyattr_get_camera_to_world(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef) PyObject *KX_Camera::pyattr_get_camera_to_world(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{ {
KX_Camera* self = static_cast<KX_Camera*>(self_v); KX_Camera* self = static_cast<KX_Camera*>(self_v);
return PyObjectFrom(self->GetCameraToWorld()); return PyObjectFrom(MT_Matrix4x4(self->GetCameraToWorld()));
} }
PyObject *KX_Camera::pyattr_get_world_to_camera(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef) PyObject *KX_Camera::pyattr_get_world_to_camera(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{ {
KX_Camera* self = static_cast<KX_Camera*>(self_v); KX_Camera* self = static_cast<KX_Camera*>(self_v);
return PyObjectFrom(self->GetWorldToCamera()); return PyObjectFrom(MT_Matrix4x4(self->GetWorldToCamera()));
} }
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{ return PyLong_FromLong(INTERSECT); } { return PyLong_FromLong(INTERSECT); }
bool ConvertPythonToCamera(PyObject *value, KX_Camera **object, bool py_none_ok, const char *error_prefix) bool ConvertPythonToCamera(KX_Scene *scene, PyObject *value, KX_Camera **object, bool py_none_ok, const char *error_prefix)
{ {
if (value==NULL) { if (value==NULL) {
PyErr_Format(PyExc_TypeError, "%s, python pointer NULL, should never happen", error_prefix); PyErr_Format(PyExc_TypeError, "%s, python pointer NULL, should never happen", error_prefix);
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} }
if (PyUnicode_Check(value)) { if (PyUnicode_Check(value)) {
STR_String value_str = _PyUnicode_AsString(value); std::string value_str = _PyUnicode_AsString(value);
*object = KX_GetActiveScene()->FindCamera(value_str); *object = (KX_Camera*)scene->GetCameraList()->FindValue(value_str);
if (*object) { if (*object) {
return true; return true;
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{ {
PyErr_Clear(); PyErr_Clear();
if (ConvertPythonToGameObject(GetScene()->GetLogicManager(), value, &obj, true, "")) if (ConvertPythonToGameObject(GetScene()->GetLogicManager(), value, &obj, false, ""))
{ {
PyErr_Clear(); PyErr_Clear();
vect = MT_Vector3(obj->NodeGetWorldPosition()); vect = MT_Vector3(obj->NodeGetWorldPosition());
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GLdouble modelmatrix[16]; GLdouble modelmatrix[16];
GLdouble projmatrix[16]; GLdouble projmatrix[16];
MT_Matrix4x4 m_modelmatrix = this->GetWorldToCamera(); MT_Matrix4x4 m_modelmatrix = MT_Matrix4x4(GetWorldToCamera());
MT_Matrix4x4 m_projmatrix = this->GetProjectionMatrix(); MT_Matrix4x4 m_projmatrix = this->GetProjectionMatrix();
m_modelmatrix.getValue(modelmatrix); m_modelmatrix.getValue(modelmatrix);
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y = 1.0 - y; //to follow Blender window coordinate system (Top-Down) y = 1.0 - y; //to follow Blender window coordinate system (Top-Down)
MT_Vector3 vect; MT_Vector3 vect;
MT_Point3 campos, screenpos; MT_Vector3 campos, screenpos;
const GLint *viewport; const GLint *viewport;
GLdouble win[3]; GLdouble win[3];
GLdouble modelmatrix[16]; GLdouble modelmatrix[16];
GLdouble projmatrix[16]; GLdouble projmatrix[16];
MT_Matrix4x4 m_modelmatrix = this->GetWorldToCamera(); MT_Matrix4x4 m_modelmatrix = MT_Matrix4x4(GetWorldToCamera());
MT_Matrix4x4 m_projmatrix = this->GetProjectionMatrix(); MT_Matrix4x4 m_projmatrix = this->GetProjectionMatrix();
m_modelmatrix.getValue(modelmatrix); m_modelmatrix.getValue(modelmatrix);
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gluUnProject(vect[0], vect[1], vect[2], modelmatrix, projmatrix, viewport, &win[0], &win[1], &win[2]); gluUnProject(vect[0], vect[1], vect[2], modelmatrix, projmatrix, viewport, &win[0], &win[1], &win[2]);
campos = this->GetCameraLocation(); campos = this->GetCameraLocation();
screenpos = MT_Point3(win[0], win[1], win[2]); screenpos = MT_Vector3(win[0], win[1], win[2]);
vect = campos-screenpos; vect = campos-screenpos;
vect.normalize(); vect.normalize();
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