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blender/source/gameengine/Ketsji/KX_Camera.cpp
Mitchell Stokes 244ce92dbd BGE: Setting up the RAS_ICanvas interface as the primary way to alter the OpenGL 
viewport. This helps to eliminate OpenGL calls in weird places like the physics
code and to reduce glGet calls, which are expensive.

There should be no functional changes (except maybe a very slight speed improvement).
2012-10-08 03:28:11 +00:00

1076 lines
29 KiB
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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
* Camera in the gameengine. Cameras are also used for views.
*/
/** \file gameengine/Ketsji/KX_Camera.cpp
* \ingroup ketsji
*/
#include "GL/glew.h"
#include "KX_Camera.h"
#include "KX_Scene.h"
#include "KX_PythonInit.h"
#include "KX_Python.h"
#include "KX_PyMath.h"
KX_Camera::KX_Camera(void* sgReplicationInfo,
SG_Callbacks callbacks,
const RAS_CameraData& camdata,
bool frustum_culling,
bool delete_node)
:
KX_GameObject(sgReplicationInfo,callbacks),
m_camdata(camdata),
m_dirty(true),
m_normalized(false),
m_frustum_culling(frustum_culling),
m_set_projection_matrix(false),
m_set_frustum_center(false),
m_delete_node(delete_node)
{
// setting a name would be nice...
m_name = "cam";
m_projection_matrix.setIdentity();
m_modelview_matrix.setIdentity();
}
KX_Camera::~KX_Camera()
{
if (m_delete_node && m_pSGNode)
{
// for shadow camera, avoids memleak
delete m_pSGNode;
m_pSGNode = NULL;
}
}
CValue* KX_Camera::GetReplica()
{
KX_Camera* replica = new KX_Camera(*this);
// this will copy properties and so on...
replica->ProcessReplica();
return replica;
}
void KX_Camera::ProcessReplica()
{
KX_GameObject::ProcessReplica();
// replicated camera are always registered in the scene
m_delete_node = false;
}
MT_Transform KX_Camera::GetWorldToCamera() const
{
MT_Transform camtrans;
camtrans.invert(MT_Transform(NodeGetWorldPosition(), NodeGetWorldOrientation()));
return camtrans;
}
MT_Transform KX_Camera::GetCameraToWorld() const
{
return MT_Transform(NodeGetWorldPosition(), NodeGetWorldOrientation());
}
void KX_Camera::CorrectLookUp(MT_Scalar speed)
{
}
const MT_Point3 KX_Camera::GetCameraLocation() const
{
/* this is the camera locatio in cam coords... */
//return m_trans1.getOrigin();
//return MT_Point3(0,0,0); <-----
/* .... I want it in world coords */
//MT_Transform trans;
//trans.setBasis(NodeGetWorldOrientation());
return NodeGetWorldPosition();
}
/* I want the camera orientation as well. */
const MT_Quaternion KX_Camera::GetCameraOrientation() const
{
return NodeGetWorldOrientation().getRotation();
}
/**
* Sets the projection matrix that is used by the rasterizer.
*/
void KX_Camera::SetProjectionMatrix(const MT_Matrix4x4 & mat)
{
m_projection_matrix = mat;
m_dirty = true;
m_set_projection_matrix = true;
m_set_frustum_center = false;
}
/**
* Sets the modelview matrix that is used by the rasterizer.
*/
void KX_Camera::SetModelviewMatrix(const MT_Matrix4x4 & mat)
{
m_modelview_matrix = mat;
m_dirty = true;
m_set_frustum_center = false;
}
/**
* Gets the projection matrix that is used by the rasterizer.
*/
const MT_Matrix4x4& KX_Camera::GetProjectionMatrix() const
{
return m_projection_matrix;
}
/**
* Gets the modelview matrix that is used by the rasterizer.
*/
const MT_Matrix4x4& KX_Camera::GetModelviewMatrix() const
{
return m_modelview_matrix;
}
bool KX_Camera::hasValidProjectionMatrix() const
{
return m_set_projection_matrix;
}
void KX_Camera::InvalidateProjectionMatrix(bool valid)
{
m_set_projection_matrix = valid;
}
/**
* These getters retrieve the clip data and the focal length
*/
float KX_Camera::GetLens() const
{
return m_camdata.m_lens;
}
float KX_Camera::GetScale() const
{
return m_camdata.m_scale;
}
/**
* Gets the horizontal size of the sensor - for camera matching.
*/
float KX_Camera::GetSensorWidth() const
{
return m_camdata.m_sensor_x;
}
/**
* Gets the vertical size of the sensor - for camera matching.
*/
float KX_Camera::GetSensorHeight() const
{
return m_camdata.m_sensor_y;
}
/** Gets the mode FOV is calculating from sensor dimensions */
short KX_Camera::GetSensorFit() const
{
return m_camdata.m_sensor_fit;
}
float KX_Camera::GetCameraNear() const
{
return m_camdata.m_clipstart;
}
float KX_Camera::GetCameraFar() const
{
return m_camdata.m_clipend;
}
float KX_Camera::GetFocalLength() const
{
return m_camdata.m_focallength;
}
RAS_CameraData* KX_Camera::GetCameraData()
{
return &m_camdata;
}
void KX_Camera::ExtractClipPlanes()
{
if (!m_dirty)
return;
MT_Matrix4x4 m = m_projection_matrix * m_modelview_matrix;
// Left clip plane
m_planes[0] = m[3] + m[0];
// Right clip plane
m_planes[1] = m[3] - m[0];
// Top clip plane
m_planes[2] = m[3] - m[1];
// Bottom clip plane
m_planes[3] = m[3] + m[1];
// Near clip plane
m_planes[4] = m[3] + m[2];
// Far clip plane
m_planes[5] = m[3] - m[2];
m_dirty = false;
m_normalized = false;
}
void KX_Camera::NormalizeClipPlanes()
{
if (m_normalized)
return;
for (unsigned int p = 0; p < 6; p++)
{
MT_Scalar factor = sqrt(m_planes[p][0]*m_planes[p][0] + m_planes[p][1]*m_planes[p][1] + m_planes[p][2]*m_planes[p][2]);
if (!MT_fuzzyZero(factor))
m_planes[p] /= factor;
}
m_normalized = true;
}
void KX_Camera::ExtractFrustumSphere()
{
if (m_set_frustum_center)
return;
// compute sphere for the general case and not only symmetric frustum:
// the mirror code in ImageRender can use very asymmetric frustum.
// We will put the sphere center on the line that goes from origin to the center of the far clipping plane
// This is the optimal position if the frustum is symmetric or very asymmetric and probably close
// to optimal for the general case. The sphere center position is computed so that the distance to
// the near and far extreme frustum points are equal.
// get the transformation matrix from device coordinate to camera coordinate
MT_Matrix4x4 clip_camcs_matrix = m_projection_matrix;
clip_camcs_matrix.invert();
if (m_projection_matrix[3][3] == MT_Scalar(0.0))
{
// frustrum projection
// 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_Point3 farpoint; // most extreme far point in camera coordinate
MT_Point3 nearpoint;// most extreme near point in camera coordinate
MT_Point3 farcenter(0.0, 0.0, 0.0);// center of far cliping plane in camera coordinate
MT_Scalar F=-1.0, 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 e, s; // far and near clipping distance (<0)
MT_Scalar c; // slope of center line = distance of far clipping center to z axis / far clipping distance
MT_Scalar z; // projection of sphere center on z axis (<0)
// tmp value
MT_Vector4 npoint(1.0, 1.0, 1.0, 1.0);
MT_Vector4 hpoint;
MT_Point3 point;
MT_Scalar len;
for (int i=0; i<4; i++)
{
hpoint = clip_camcs_matrix*npoint;
point.setValue(hpoint[0]/hpoint[3], hpoint[1]/hpoint[3], hpoint[2]/hpoint[3]);
len = point.dot(point);
if (len > F)
{
nfar = npoint;
farpoint = point;
F = len;
}
// rotate by 90 degree along the z axis to walk through the 4 extreme points of the far clipping plane
len = npoint[0];
npoint[0] = -npoint[1];
npoint[1] = len;
farcenter += point;
}
// the far center is the average of the far clipping points
farcenter *= 0.25;
// the extreme near point is the opposite point on the near clipping plane
nfar.setValue(-nfar[0], -nfar[1], -1.0, 1.0);
nfar = clip_camcs_matrix*nfar;
nearpoint.setValue(nfar[0]/nfar[3], nfar[1]/nfar[3], nfar[2]/nfar[3]);
// this is a frustrum projection
N = nearpoint.dot(nearpoint);
e = farpoint[2];
s = nearpoint[2];
// projection on XY plane for distance to axis computation
MT_Point2 farxy(farpoint[0], farpoint[1]);
// f is forced positive by construction
f = farxy.length();
// get corresponding point on the near plane
farxy *= s/e;
// this formula preserve the sign of n
n = f*s/e - MT_Point2(nearpoint[0]-farxy[0], nearpoint[1]-farxy[1]).length();
c = MT_Point2(farcenter[0], farcenter[1]).length()/e;
// the big formula, it simplifies to (F-N)/(2(e-s)) for the symmetric case
z = (F-N)/(2.0*(e-s+c*(f-n)));
m_frustum_center = MT_Point3(farcenter[0]*z/e, farcenter[1]*z/e, z);
m_frustum_radius = m_frustum_center.distance(farpoint);
}
else
{
// orthographic projection
// The most extreme points on the near and far plane. (normalized device coords)
MT_Vector4 hnear(1.0, 1.0, 1.0, 1.0), hfar(-1.0, -1.0, -1.0, 1.0);
// Transform to hom camera local space
hnear = clip_camcs_matrix*hnear;
hfar = clip_camcs_matrix*hfar;
// Tranform to 3d camera local space.
MT_Point3 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]);
// just use mediant point
m_frustum_center = (farpoint + nearpoint)*0.5;
m_frustum_radius = m_frustum_center.distance(farpoint);
}
// Transform to world space.
m_frustum_center = GetCameraToWorld()(m_frustum_center);
m_frustum_radius /= fabs(NodeGetWorldScaling()[NodeGetWorldScaling().closestAxis()]);
m_set_frustum_center = true;
}
bool KX_Camera::PointInsideFrustum(const MT_Point3& x)
{
ExtractClipPlanes();
for ( unsigned int i = 0; i < 6 ; i++ )
{
if (m_planes[i][0] * x[0] + m_planes[i][1] * x[1] + m_planes[i][2] * x[2] + m_planes[i][3] < 0.0)
return false;
}
return true;
}
int KX_Camera::BoxInsideFrustum(const MT_Point3 *box)
{
ExtractClipPlanes();
unsigned int insideCount = 0;
// 6 view frustum planes
for ( unsigned int p = 0; p < 6 ; p++ )
{
unsigned int behindCount = 0;
// 8 box vertices.
for (unsigned int v = 0; v < 8 ; v++)
{
if (m_planes[p][0] * box[v][0] + m_planes[p][1] * box[v][1] + m_planes[p][2] * box[v][2] + m_planes[p][3] < 0.0)
behindCount++;
}
// 8 points behind this plane
if (behindCount == 8)
return OUTSIDE;
// Every box vertex is on the front side of this plane
if (!behindCount)
insideCount++;
}
// All box vertices are on the front side of all frustum planes.
if (insideCount == 6)
return INSIDE;
return INTERSECT;
}
int KX_Camera::SphereInsideFrustum(const MT_Point3& center, const MT_Scalar &radius)
{
ExtractFrustumSphere();
if (center.distance2(m_frustum_center) > (radius + m_frustum_radius)*(radius + m_frustum_radius))
return OUTSIDE;
unsigned int p;
ExtractClipPlanes();
NormalizeClipPlanes();
MT_Scalar distance;
int intersect = INSIDE;
// distance: <-------- OUTSIDE -----|----- INTERSECT -----0----- INTERSECT -----|----- INSIDE -------->
// -radius radius
for (p = 0; p < 6; p++)
{
distance = m_planes[p][0]*center[0] + m_planes[p][1]*center[1] + m_planes[p][2]*center[2] + m_planes[p][3];
if (fabs(distance) <= radius)
intersect = INTERSECT;
else if (distance < -radius)
return OUTSIDE;
}
return intersect;
}
bool KX_Camera::GetFrustumCulling() const
{
return m_frustum_culling;
}
void KX_Camera::EnableViewport(bool viewport)
{
m_camdata.m_viewport = viewport;
}
void KX_Camera::SetViewport(int left, int bottom, int right, int top)
{
m_camdata.m_viewportleft = left;
m_camdata.m_viewportbottom = bottom;
m_camdata.m_viewportright = right;
m_camdata.m_viewporttop = top;
}
bool KX_Camera::GetViewport() const
{
return m_camdata.m_viewport;
}
int KX_Camera::GetViewportLeft() const
{
return m_camdata.m_viewportleft;
}
int KX_Camera::GetViewportBottom() const
{
return m_camdata.m_viewportbottom;
}
int KX_Camera::GetViewportRight() const
{
return m_camdata.m_viewportright;
}
int KX_Camera::GetViewportTop() const
{
return m_camdata.m_viewporttop;
}
#ifdef WITH_PYTHON
//----------------------------------------------------------------------------
//Python
PyMethodDef KX_Camera::Methods[] = {
KX_PYMETHODTABLE(KX_Camera, sphereInsideFrustum),
KX_PYMETHODTABLE_O(KX_Camera, boxInsideFrustum),
KX_PYMETHODTABLE_O(KX_Camera, pointInsideFrustum),
KX_PYMETHODTABLE_NOARGS(KX_Camera, getCameraToWorld),
KX_PYMETHODTABLE_NOARGS(KX_Camera, getWorldToCamera),
KX_PYMETHODTABLE(KX_Camera, setViewport),
KX_PYMETHODTABLE_NOARGS(KX_Camera, setOnTop),
KX_PYMETHODTABLE_O(KX_Camera, getScreenPosition),
KX_PYMETHODTABLE(KX_Camera, getScreenVect),
KX_PYMETHODTABLE(KX_Camera, getScreenRay),
{NULL,NULL} //Sentinel
};
PyAttributeDef KX_Camera::Attributes[] = {
KX_PYATTRIBUTE_BOOL_RW("frustum_culling", KX_Camera, m_frustum_culling),
KX_PYATTRIBUTE_RW_FUNCTION("perspective", KX_Camera, pyattr_get_perspective, pyattr_set_perspective),
KX_PYATTRIBUTE_RW_FUNCTION("lens", KX_Camera, pyattr_get_lens, pyattr_set_lens),
KX_PYATTRIBUTE_RW_FUNCTION("ortho_scale", KX_Camera, pyattr_get_ortho_scale, pyattr_set_ortho_scale),
KX_PYATTRIBUTE_RW_FUNCTION("near", KX_Camera, pyattr_get_near, pyattr_set_near),
KX_PYATTRIBUTE_RW_FUNCTION("far", KX_Camera, pyattr_get_far, pyattr_set_far),
KX_PYATTRIBUTE_RW_FUNCTION("useViewport", KX_Camera, pyattr_get_use_viewport, pyattr_set_use_viewport),
KX_PYATTRIBUTE_RW_FUNCTION("projection_matrix", KX_Camera, pyattr_get_projection_matrix, pyattr_set_projection_matrix),
KX_PYATTRIBUTE_RO_FUNCTION("modelview_matrix", KX_Camera, pyattr_get_modelview_matrix),
KX_PYATTRIBUTE_RO_FUNCTION("camera_to_world", KX_Camera, pyattr_get_camera_to_world),
KX_PYATTRIBUTE_RO_FUNCTION("world_to_camera", KX_Camera, pyattr_get_world_to_camera),
/* Grrr, functions for constants? */
KX_PYATTRIBUTE_RO_FUNCTION("INSIDE", KX_Camera, pyattr_get_INSIDE),
KX_PYATTRIBUTE_RO_FUNCTION("OUTSIDE", KX_Camera, pyattr_get_OUTSIDE),
KX_PYATTRIBUTE_RO_FUNCTION("INTERSECT", KX_Camera, pyattr_get_INTERSECT),
{ NULL } //Sentinel
};
PyTypeObject KX_Camera::Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"KX_Camera",
sizeof(PyObjectPlus_Proxy),
0,
py_base_dealloc,
0,
0,
0,
0,
py_base_repr,
0,
&KX_GameObject::Sequence,
&KX_GameObject::Mapping,
0,0,0,
NULL,
NULL,
0,
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
0,0,0,0,0,0,0,
Methods,
0,
0,
&KX_GameObject::Type,
0,0,0,0,0,0,
py_base_new
};
KX_PYMETHODDEF_DOC_VARARGS(KX_Camera, sphereInsideFrustum,
"sphereInsideFrustum(center, radius) -> Integer\n"
"\treturns INSIDE, OUTSIDE or INTERSECT if the given sphere is\n"
"\tinside/outside/intersects this camera's viewing frustum.\n\n"
"\tcenter = the center of the sphere (in world coordinates.)\n"
"\tradius = the radius of the sphere\n\n"
"\tExample:\n"
"\timport bge.logic\n\n"
"\tco = bge.logic.getCurrentController()\n"
"\tcam = co.GetOwner()\n\n"
"\t# A sphere of radius 4.0 located at [x, y, z] = [1.0, 1.0, 1.0]\n"
"\tif (cam.sphereInsideFrustum([1.0, 1.0, 1.0], 4) != cam.OUTSIDE):\n"
"\t\t# Sphere is inside frustum !\n"
"\t\t# Do something useful !\n"
"\telse:\n"
"\t\t# Sphere is outside frustum\n"
)
{
PyObject *pycenter;
float radius;
if (PyArg_ParseTuple(args, "Of:sphereInsideFrustum", &pycenter, &radius))
{
MT_Point3 center;
if (PyVecTo(pycenter, center))
{
return PyLong_FromSsize_t(SphereInsideFrustum(center, radius)); /* new ref */
}
}
PyErr_SetString(PyExc_TypeError, "camera.sphereInsideFrustum(center, radius): KX_Camera, expected arguments: (center, radius)");
return NULL;
}
KX_PYMETHODDEF_DOC_O(KX_Camera, boxInsideFrustum,
"boxInsideFrustum(box) -> Integer\n"
"\treturns INSIDE, OUTSIDE or INTERSECT if the given box is\n"
"\tinside/outside/intersects this camera's viewing frustum.\n\n"
"\tbox = a list of the eight (8) corners of the box (in world coordinates.)\n\n"
"\tExample:\n"
"\timport bge.logic\n\n"
"\tco = bge.logic.getCurrentController()\n"
"\tcam = co.GetOwner()\n\n"
"\tbox = []\n"
"\tbox.append([-1.0, -1.0, -1.0])\n"
"\tbox.append([-1.0, -1.0, 1.0])\n"
"\tbox.append([-1.0, 1.0, -1.0])\n"
"\tbox.append([-1.0, 1.0, 1.0])\n"
"\tbox.append([ 1.0, -1.0, -1.0])\n"
"\tbox.append([ 1.0, -1.0, 1.0])\n"
"\tbox.append([ 1.0, 1.0, -1.0])\n"
"\tbox.append([ 1.0, 1.0, 1.0])\n\n"
"\tif (cam.boxInsideFrustum(box) != cam.OUTSIDE):\n"
"\t\t# Box is inside/intersects frustum !\n"
"\t\t# Do something useful !\n"
"\telse:\n"
"\t\t# Box is outside the frustum !\n"
)
{
unsigned int num_points = PySequence_Size(value);
if (num_points != 8)
{
PyErr_Format(PyExc_TypeError, "camera.boxInsideFrustum(box): KX_Camera, expected eight (8) points, got %d", num_points);
return NULL;
}
MT_Point3 box[8];
for (unsigned int p = 0; p < 8 ; p++)
{
PyObject *item = PySequence_GetItem(value, p); /* new ref */
bool error = !PyVecTo(item, box[p]);
Py_DECREF(item);
if (error)
return NULL;
}
return PyLong_FromSsize_t(BoxInsideFrustum(box)); /* new ref */
}
KX_PYMETHODDEF_DOC_O(KX_Camera, pointInsideFrustum,
"pointInsideFrustum(point) -> Bool\n"
"\treturns 1 if the given point is inside this camera's viewing frustum.\n\n"
"\tpoint = The point to test (in world coordinates.)\n\n"
"\tExample:\n"
"\timport bge.logic\n\n"
"\tco = bge.logic.getCurrentController()\n"
"\tcam = co.GetOwner()\n\n"
"\t# Test point [0.0, 0.0, 0.0]"
"\tif (cam.pointInsideFrustum([0.0, 0.0, 0.0])):\n"
"\t\t# Point is inside frustum !\n"
"\t\t# Do something useful !\n"
"\telse:\n"
"\t\t# Box is outside the frustum !\n"
)
{
MT_Point3 point;
if (PyVecTo(value, point))
{
return PyLong_FromSsize_t(PointInsideFrustum(point)); /* new ref */
}
PyErr_SetString(PyExc_TypeError, "camera.pointInsideFrustum(point): KX_Camera, expected point argument.");
return NULL;
}
KX_PYMETHODDEF_DOC_NOARGS(KX_Camera, getCameraToWorld,
"getCameraToWorld() -> Matrix4x4\n"
"\treturns the camera to world transformation matrix, as a list of four lists of four values.\n\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 */
}
KX_PYMETHODDEF_DOC_NOARGS(KX_Camera, getWorldToCamera,
"getWorldToCamera() -> Matrix4x4\n"
"\treturns the world to camera transformation matrix, as a list of four lists of four values.\n\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 */
}
KX_PYMETHODDEF_DOC_VARARGS(KX_Camera, setViewport,
"setViewport(left, bottom, right, top)\n"
"Sets this camera's viewport\n")
{
int left, bottom, right, top;
if (!PyArg_ParseTuple(args,"iiii:setViewport",&left, &bottom, &right, &top))
return NULL;
SetViewport(left, bottom, right, top);
Py_RETURN_NONE;
}
KX_PYMETHODDEF_DOC_NOARGS(KX_Camera, setOnTop,
"setOnTop()\n"
"Sets this camera's viewport on top\n")
{
class KX_Scene* scene = KX_GetActiveScene();
scene->SetCameraOnTop(this);
Py_RETURN_NONE;
}
PyObject *KX_Camera::pyattr_get_perspective(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
return PyBool_FromLong(self->m_camdata.m_perspective);
}
int KX_Camera::pyattr_set_perspective(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
int param = PyObject_IsTrue( value );
if (param == -1) {
PyErr_SetString(PyExc_AttributeError, "camera.perspective = bool: KX_Camera, expected True/False or 0/1");
return PY_SET_ATTR_FAIL;
}
self->m_camdata.m_perspective= param;
self->InvalidateProjectionMatrix();
return PY_SET_ATTR_SUCCESS;
}
PyObject *KX_Camera::pyattr_get_lens(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
return PyFloat_FromDouble(self->m_camdata.m_lens);
}
int KX_Camera::pyattr_set_lens(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
float param = PyFloat_AsDouble(value);
if (param == -1) {
PyErr_SetString(PyExc_AttributeError, "camera.lens = float: KX_Camera, expected a float greater then zero");
return PY_SET_ATTR_FAIL;
}
self->m_camdata.m_lens= param;
self->m_set_projection_matrix = false;
return PY_SET_ATTR_SUCCESS;
}
PyObject *KX_Camera::pyattr_get_ortho_scale(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
return PyFloat_FromDouble(self->m_camdata.m_scale);
}
int KX_Camera::pyattr_set_ortho_scale(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
float param = PyFloat_AsDouble(value);
if (param == -1) {
PyErr_SetString(PyExc_AttributeError, "camera.ortho_scale = float: KX_Camera, expected a float greater then zero");
return PY_SET_ATTR_FAIL;
}
self->m_camdata.m_scale= param;
self->m_set_projection_matrix = false;
return PY_SET_ATTR_SUCCESS;
}
PyObject *KX_Camera::pyattr_get_near(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
return PyFloat_FromDouble(self->m_camdata.m_clipstart);
}
int KX_Camera::pyattr_set_near(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
float param = PyFloat_AsDouble(value);
if (param == -1) {
PyErr_SetString(PyExc_AttributeError, "camera.near = float: KX_Camera, expected a float greater then zero");
return PY_SET_ATTR_FAIL;
}
self->m_camdata.m_clipstart= param;
self->m_set_projection_matrix = false;
return PY_SET_ATTR_SUCCESS;
}
PyObject *KX_Camera::pyattr_get_far(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
return PyFloat_FromDouble(self->m_camdata.m_clipend);
}
int KX_Camera::pyattr_set_far(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
float param = PyFloat_AsDouble(value);
if (param == -1) {
PyErr_SetString(PyExc_AttributeError, "camera.far = float: KX_Camera, expected a float greater then zero");
return PY_SET_ATTR_FAIL;
}
self->m_camdata.m_clipend= param;
self->m_set_projection_matrix = false;
return PY_SET_ATTR_SUCCESS;
}
PyObject *KX_Camera::pyattr_get_use_viewport(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
return PyBool_FromLong(self->GetViewport());
}
int KX_Camera::pyattr_set_use_viewport(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
int param = PyObject_IsTrue( value );
if (param == -1) {
PyErr_SetString(PyExc_AttributeError, "camera.useViewport = bool: KX_Camera, expected True or False");
return PY_SET_ATTR_FAIL;
}
self->EnableViewport((bool)param);
return PY_SET_ATTR_SUCCESS;
}
PyObject *KX_Camera::pyattr_get_projection_matrix(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
return PyObjectFrom(self->GetProjectionMatrix());
}
int KX_Camera::pyattr_set_projection_matrix(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
MT_Matrix4x4 mat;
if (!PyMatTo(value, mat))
return PY_SET_ATTR_FAIL;
self->SetProjectionMatrix(mat);
return PY_SET_ATTR_SUCCESS;
}
PyObject *KX_Camera::pyattr_get_modelview_matrix(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_Camera* self= static_cast<KX_Camera*>(self_v);
return PyObjectFrom(self->GetModelviewMatrix());
}
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);
return PyObjectFrom(self->GetCameraToWorld());
}
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);
return PyObjectFrom(self->GetWorldToCamera());
}
PyObject *KX_Camera::pyattr_get_INSIDE(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{ return PyLong_FromSsize_t(INSIDE); }
PyObject *KX_Camera::pyattr_get_OUTSIDE(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{ return PyLong_FromSsize_t(OUTSIDE); }
PyObject *KX_Camera::pyattr_get_INTERSECT(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{ return PyLong_FromSsize_t(INTERSECT); }
bool ConvertPythonToCamera(PyObject *value, KX_Camera **object, bool py_none_ok, const char *error_prefix)
{
if (value==NULL) {
PyErr_Format(PyExc_TypeError, "%s, python pointer NULL, should never happen", error_prefix);
*object = NULL;
return false;
}
if (value==Py_None) {
*object = NULL;
if (py_none_ok) {
return true;
} else {
PyErr_Format(PyExc_TypeError, "%s, expected KX_Camera or a KX_Camera name, None is invalid", error_prefix);
return false;
}
}
if (PyUnicode_Check(value)) {
STR_String value_str = _PyUnicode_AsString(value);
*object = KX_GetActiveScene()->FindCamera(value_str);
if (*object) {
return true;
} else {
PyErr_Format(PyExc_ValueError,
"%s, requested name \"%s\" did not match any KX_Camera in this scene",
error_prefix, _PyUnicode_AsString(value));
return false;
}
}
if (PyObject_TypeCheck(value, &KX_Camera::Type)) {
*object = static_cast<KX_Camera*>BGE_PROXY_REF(value);
/* sets the error */
if (*object==NULL) {
PyErr_Format(PyExc_SystemError, "%s, " BGE_PROXY_ERROR_MSG, error_prefix);
return false;
}
return true;
}
*object = NULL;
if (py_none_ok) {
PyErr_Format(PyExc_TypeError, "%s, expect a KX_Camera, a string or None", error_prefix);
} else {
PyErr_Format(PyExc_TypeError, "%s, expect a KX_Camera or a string", error_prefix);
}
return false;
}
KX_PYMETHODDEF_DOC_O(KX_Camera, getScreenPosition,
"getScreenPosition()\n"
)
{
MT_Vector3 vect;
KX_GameObject *obj = NULL;
if (!PyVecTo(value, vect))
{
PyErr_Clear();
if (ConvertPythonToGameObject(value, &obj, true, ""))
{
PyErr_Clear();
vect = MT_Vector3(obj->NodeGetWorldPosition());
}
else
{
PyErr_SetString(PyExc_TypeError, "Error in getScreenPosition. Expected a Vector3 or a KX_GameObject or a string for a name of a KX_GameObject");
return NULL;
}
}
const GLint *viewport;
GLdouble win[3];
GLdouble modelmatrix[16];
GLdouble projmatrix[16];
MT_Matrix4x4 m_modelmatrix = this->GetModelviewMatrix();
MT_Matrix4x4 m_projmatrix = this->GetProjectionMatrix();
m_modelmatrix.getValue(modelmatrix);
m_projmatrix.getValue(projmatrix);
viewport = KX_GetActiveEngine()->GetCanvas()->GetViewPort();
gluProject(vect[0], vect[1], vect[2], modelmatrix, projmatrix, viewport, &win[0], &win[1], &win[2]);
vect[0] = (win[0] - viewport[0]) / viewport[2];
vect[1] = (win[1] - viewport[1]) / viewport[3];
vect[1] = 1.0 - vect[1]; //to follow Blender window coordinate system (Top-Down)
PyObject *ret = PyTuple_New(2);
if (ret) {
PyTuple_SET_ITEM(ret, 0, PyFloat_FromDouble(vect[0]));
PyTuple_SET_ITEM(ret, 1, PyFloat_FromDouble(vect[1]));
return ret;
}
return NULL;
}
KX_PYMETHODDEF_DOC_VARARGS(KX_Camera, getScreenVect,
"getScreenVect()\n"
)
{
double x,y;
if (!PyArg_ParseTuple(args,"dd:getScreenVect",&x,&y))
return NULL;
y = 1.0 - y; //to follow Blender window coordinate system (Top-Down)
MT_Vector3 vect;
MT_Point3 campos, screenpos;
const GLint *viewport;
GLdouble win[3];
GLdouble modelmatrix[16];
GLdouble projmatrix[16];
MT_Matrix4x4 m_modelmatrix = this->GetModelviewMatrix();
MT_Matrix4x4 m_projmatrix = this->GetProjectionMatrix();
m_modelmatrix.getValue(modelmatrix);
m_projmatrix.getValue(projmatrix);
viewport = KX_GetActiveEngine()->GetCanvas()->GetViewPort();
vect[0] = x * viewport[2];
vect[1] = y * viewport[3];
vect[0] += viewport[0];
vect[1] += viewport[1];
glReadPixels(x, y, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &vect[2]);
gluUnProject(vect[0], vect[1], vect[2], modelmatrix, projmatrix, viewport, &win[0], &win[1], &win[2]);
campos = this->GetCameraLocation();
screenpos = MT_Point3(win[0], win[1], win[2]);
vect = campos-screenpos;
vect.normalize();
return PyObjectFrom(vect);
}
KX_PYMETHODDEF_DOC_VARARGS(KX_Camera, getScreenRay,
"getScreenRay()\n"
)
{
MT_Vector3 vect;
double x,y,dist;
char *propName = NULL;
if (!PyArg_ParseTuple(args,"ddd|s:getScreenRay",&x,&y,&dist,&propName))
return NULL;
PyObject *argValue = PyTuple_New(2);
PyTuple_SET_ITEM(argValue, 0, PyFloat_FromDouble(x));
PyTuple_SET_ITEM(argValue, 1, PyFloat_FromDouble(y));
if (!PyVecTo(PygetScreenVect(argValue), vect))
{
Py_DECREF(argValue);
PyErr_SetString(PyExc_TypeError,
"Error in getScreenRay. Invalid 2D coordinate. "
"Expected a normalized 2D screen coordinate, "
"a distance and an optional property argument");
return NULL;
}
Py_DECREF(argValue);
dist = -dist;
vect += this->GetCameraLocation();
argValue = (propName?PyTuple_New(3):PyTuple_New(2));
if (argValue) {
PyTuple_SET_ITEM(argValue, 0, PyObjectFrom(vect));
PyTuple_SET_ITEM(argValue, 1, PyFloat_FromDouble(dist));
if (propName)
PyTuple_SET_ITEM(argValue, 2, PyUnicode_FromString(propName));
PyObject *ret= this->PyrayCastTo(argValue,NULL);
Py_DECREF(argValue);
return ret;
}
return NULL;
}
#endif
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