khanat-opennel-code/code/ryzom/client/src/interface_v3/ctrl_polygon.cpp
2010-07-10 15:02:07 +02:00

305 lines
9.1 KiB
C++

// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "stdpch.h"
#include "ctrl_polygon.h"
#include "view_renderer.h"
#include "interface_manager.h"
using namespace NLMISC;
// *********************************************************************************
CCtrlPolygon::CCtrlPolygon() : CCtrlBase(TCtorParam())
{
// Construct
_Color = CRGBA::White;
//_Matrix = CMatrix::Identity;
_Valid = true;
}
// *********************************************************************************
void CCtrlPolygon::updateBoudingRect()
{
H_AUTO(Rz_CCtrlPolygon_updateBoudingRect)
if (_Poly.Vertices.empty())
{
setX(0);
setY(0);
setW(0);
setH(0);
return;
}
//
sint32 xmin = INT_MAX;
sint32 ymin = INT_MAX;
sint32 xmax = INT_MIN;
sint32 ymax = INT_MIN;
uint numVerts = (uint)_Poly.Vertices.size();
_XFormPoly.Vertices.resize(numVerts);
for(uint k = 0; k < numVerts; ++k)
{
CVector2f &finalPos = _XFormPoly.Vertices[k];
//finalPos = _Matrix * _Poly.Vertices[k];
computeScaledVertex(finalPos, CVector2f(_Poly.Vertices[k].x, _Poly.Vertices[k].y));
xmin = std::min(xmin, (sint32) floorf(finalPos.x));
xmax = std::max(xmax, (sint32) ceilf(finalPos.x));
ymin = std::min(ymin, (sint32) floorf(finalPos.y));
ymax = std::max(ymax, (sint32) ceilf(finalPos.y));
}
setX(xmin);
setY(ymin);
setW(xmax - xmin);
setH(ymax - ymin);
}
// *********************************************************************************
bool CCtrlPolygon::contains(const CVector2f &pos) const
{
H_AUTO(Rz_CCtrlPolygon_contains)
if (!_Valid) return false;
return _XFormPoly.contains(pos, false);
}
// *********************************************************************************
void CCtrlPolygon::setVertices(const std::vector<NLMISC::CVector> &vertices)
{
H_AUTO(Rz_CCtrlPolygon_setVertices)
if (vertices.size() == _Poly.Vertices.size() &&
std::equal(vertices.begin(), vertices.end(), _Poly.Vertices.begin())) return; // remains unchanged
//TTicks startTime = CTime::getPerformanceTime();
_Poly.Vertices = vertices;
_Tris.clear();
std::list<CPolygon> polys;
bool splitDone = _Poly.toConvexPolygons(polys, NLMISC::CMatrix::Identity);
if (!splitDone)
{
polys.clear();
// maybe wrong orientation
std::reverse(_Poly.Vertices.begin(), _Poly.Vertices.end());
splitDone = _Poly.toConvexPolygons(polys, NLMISC::CMatrix::Identity);
std::reverse(_Poly.Vertices.begin(), _Poly.Vertices.end());
}
_Tris.clear();
if (splitDone)
{
for(std::list<CPolygon>::iterator it = polys.begin(); it != polys.end(); ++it)
{
it->toTriFan(_Tris);
}
}
_Touched = true;
updateBoudingRect();
_Valid = splitDone;
//TTicks endTime = CTime::getPerformanceTime();
//nlinfo("%d ms for CCtrlPolygon::setVertices", (int) (1000 * CTime::ticksToSecond(endTime - startTime)));
}
static inline bool totallyInside(const CVector &minCorner, const CVector &maxCorner, sint32 cx, sint32 cy, sint32 cw, sint32 ch)
{
return (sint32) maxCorner.x < (cx + cw) &&
(sint32) minCorner.x >= cx &&
(sint32) maxCorner.y < (cy + ch) &&
(sint32) minCorner.y >= cy;
}
static inline bool totallyOutside(const CVector &minCorner, const CVector &maxCorner, sint32 cx, sint32 cy, sint32 cw, sint32 ch)
{
return (sint32) minCorner.x >= (cx + cw) ||
(sint32) maxCorner.x < cx ||
(sint32) minCorner.y >= (cy + ch) ||
(sint32) maxCorner.y < cy;
}
// *********************************************************************************
/*void CCtrlPolygon::setMatrix(const NLMISC::CMatrix &mat)
{
const float *lhs = mat.get();
const float *rhs = _Matrix.get();
if (std::equal(lhs, lhs + 16, rhs)) return; // unmodified...
_Matrix = mat;
updateBoudingRect();
_Touched = true;
}*/
// *********************************************************************************
void CCtrlPolygon::draw()
{
H_AUTO(Rz_CCtrlPolygon_draw)
if (_Tris.empty()) return;
if (!_Parent) return;
CInterfaceManager *im = CInterfaceManager::getInstance();
CViewRenderer &vr = im->getViewRenderer();
if (_Touched)
{
_RealTris.clear();
uint numTris = (uint)_Tris.size();
sint32 cornerX, cornerY;
static std::vector<NLMISC::CTriangle> winTris;
winTris.resize(numTris);
_Parent->getCorner(cornerX, cornerY, _ParentPosRef);
/*CMatrix m = _Matrix;
m.setPos(m.getPos() + CVector((float) cornerX, (float) cornerY, 0.f));*/
for(uint k = 0; k < numTris; ++k)
{
/*winTris[k].V0 = m * _Tris[k].V0;
winTris[k].V1 = m * _Tris[k].V1;
winTris[k].V2 = m * _Tris[k].V2;*/
CVector2f result;
computeScaledVertex(result, _Tris[k].V0);
winTris[k].V0.set(result.x + cornerX, result.y + cornerY, 0.f);
computeScaledVertex(result, _Tris[k].V1);
winTris[k].V1.set(result.x + cornerX, result.y + cornerY, 0.f);
computeScaledVertex(result, _Tris[k].V2);
winTris[k].V2.set(result.x + cornerX, result.y + cornerY, 0.f);
}
// recompute & reclip poly
_RealTris.clear();
sint32 cx, cy, cw, ch;
vr.getClipWindow(cx, cy, cw, ch);
// per tri clip
NLMISC::CVector minCorner;
NLMISC::CVector maxCorner;
for(uint k = 0; k < numTris; ++k)
{
winTris[k].getMinCorner(minCorner);
winTris[k].getMaxCorner(maxCorner);
if (totallyOutside(minCorner, maxCorner, cx, cy, cw, ch)) continue;
if (totallyInside(minCorner, maxCorner, cx, cy, cw, ch))
{
_RealTris.push_back(winTris[k]);
}
else
{
const uint maxNumCorners = 8;
static CVector outPos0[maxNumCorners];
static CVector outPos1[maxNumCorners];
//
outPos0[0] = winTris[k].V0;
outPos0[1] = winTris[k].V1;
outPos0[2] = winTris[k].V2;
//
CVector *pPos0 = outPos0;
CVector *pPos1 = outPos1;
//
sint count = 3;
//
if ((sint32) minCorner.x < cx)
{
// clip left
CPlane clipper(-1.f, 0.f, 0.f, (float) cx);
count = clipper.clipPolygonBack(pPos0, pPos1, count);
std::swap(pPos0, pPos1);
}
if ((sint32) maxCorner.x > cx + cw)
{
// clip right
CPlane clipper(1.f, 0.f, 0.f, - (float) (cx + cw));
count = clipper.clipPolygonBack(pPos0, pPos1, count);
std::swap(pPos0, pPos1);
}
//
if ((sint32) minCorner.y < cy)
{
// clip bottom
CPlane clipper(0.f, -1.f, 0.f, (float) cy);
count = clipper.clipPolygonBack(pPos0, pPos1, count);
std::swap(pPos0, pPos1);
}
if ((sint32) maxCorner.y > cy + ch)
{
// clip top
CPlane clipper(0.f, 1.f, 0.f, - (float) (cy + ch));
count = clipper.clipPolygonBack(pPos0, pPos1, count);
std::swap(pPos0, pPos1);
}
nlassert(count <= 8);
if (count >= 3)
{
for(uint k = 0; k < (uint) (count - 2); ++k)
{
_RealTris.push_back(NLMISC::CTriangle(pPos0[0], pPos0[k + 1], pPos0[k + 2]));
}
}
}
}
_Touched = false;
}
if (_RealTris.empty()) return;
CRGBA col;
if(getModulateGlobalColor())
{
col.modulateFromColor (_Color, im->getGlobalColorForContent());
}
else
{
col= _Color;
col.A = (uint8)(((sint32)col.A*((sint32)im->getGlobalColorForContent().A+1))>>8);
}
vr.drawUnclippedTriangles(_RenderLayer, _RealTris, col);
}
// *********************************************************************************
void CCtrlPolygon::updateCoords()
{
H_AUTO(Rz_CCtrlPolygon_updateCoords)
CCtrlBase::updateCoords();
updateBoudingRect();
// assume that clipping will have to be done again, real update of triangle will be done at render time
_Touched = true;
}
// *********************************************************************************
void CCtrlPolygon::setAlpha(sint32 a)
{
H_AUTO(Rz_CCtrlPolygon_setAlpha)
_Color.A = (uint8) a;
}
// *********************************************************************************
bool CCtrlPolygon::handleEvent(const CEventDescriptor &/* event */)
{
H_AUTO(Rz_CCtrlPolygon_handleEvent)
return false;
}
// *********************************************************************************
// TMP TMP
void CCtrlPolygon::computeScaledVertex(NLMISC::CVector2f &dest, const NLMISC::CVector2f &src)
{
H_AUTO(Rz_CCtrlPolygon_computeScaledVertex)
dest.set(src.x, src.y);
}
// *********************************************************************************
// TMP TMP
void CCtrlPolygon::touch()
{
H_AUTO(Rz_CCtrlPolygon_touch)
updateBoudingRect();
_Touched = true;
}