338 lines
8.6 KiB
C++
338 lines
8.6 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "std_afx.h"
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#include "object_viewer.h"
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#include "basis_edit.h"
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#include "nel/misc/matrix.h"
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#include "nel/misc/vector.h"
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/////////////////////////////////////////////////////////////////////////////
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// CBasisEdit dialog
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CBasisEdit::CBasisEdit(CWnd* pParent /*=NULL*/)
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{
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//{{AFX_DATA_INIT(CBasisEdit)
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m_Psi = 0;
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m_Theta = 0;
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m_Phi = 0;
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//}}AFX_DATA_INIT
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}
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void CBasisEdit::DoDataExchange(CDataExchange* pDX)
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{
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CDialog::DoDataExchange(pDX);
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//{{AFX_DATA_MAP(CBasisEdit)
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DDX_Control(pDX, IDC_PHI_SCROLLBAR, m_PhiCtrl);
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DDX_Control(pDX, IDC_PSI_SCROLLBAR, m_PsiCtrl);
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DDX_Control(pDX, IDC_THETA_SCROLLBAR, m_ThetaCtrl);
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DDX_Text(pDX, IDC_PSI_VALUE, m_Psi);
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DDX_Text(pDX, IDC_THETA_VALUE, m_Theta);
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DDX_Text(pDX, IDC_PHI_VALUE, m_Phi);
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//}}AFX_DATA_MAP
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}
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BEGIN_MESSAGE_MAP(CBasisEdit, CDialog)
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//{{AFX_MSG_MAP(CBasisEdit)
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ON_WM_PAINT()
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ON_WM_HSCROLL()
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//}}AFX_MSG_MAP
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END_MESSAGE_MAP()
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/////////////////////////////////////////////////////////////////////////////
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// CBasisEdit message handlers
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void CBasisEdit::init(uint32 x, uint32 y, CWnd *pParent)
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{
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nlassert(_Wrapper); // _Wrapper should have been set before init !!
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Create(IDD_BASIS_EDIT, pParent);
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RECT r;
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GetClientRect(&r);
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m_PsiCtrl.SetScrollRange(0, 359);
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m_ThetaCtrl.SetScrollRange(0, 359);
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m_PhiCtrl.SetScrollRange(0, 359);
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MoveWindow(x, y, r.right, r.bottom);
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updateAnglesFromReader();
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ShowWindow(SW_SHOW);
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UpdateData(FALSE);
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}
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// build an euler matrix
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NLMISC::CMatrix BuildEulerMatrix(float psi, float theta, float phi)
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{
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float ca = cosf(psi), sa = sinf(psi)
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, cb = cosf(theta), sb = sinf(theta)
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, cc = cosf(phi), sc = sinf(phi);
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NLMISC::CMatrix m;
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m.identity();
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m.setRot(NLMISC::CVector(ca * cb * cc - sa * sc, -cc * sa - ca * cb *sc, ca * sb)
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,NLMISC::CVector(cb * cc * sa + ca * sc, ca * cc - cb * sa * sc, sa *sb)
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,NLMISC::CVector(-cc * sb, sb * sc, cb)
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);
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return m;
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}
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// get back the euler angles from a matrix
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NLMISC::CVector GetEulerAngles(const NLMISC::CMatrix &mat)
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{
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float m[3][3];
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// we got cos theta = m33
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NLMISC::CVector v[3];
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mat.getRot(v[0], v[1], v[2]);
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for (uint l = 0; l < 3; ++l)
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{
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m[0][l] = v[l].x; m[1][l] = v[l].y; m[2][l] = v[l].z;
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}
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// there are eight triplet that may satisfy the equation
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// we compute them all, and test them against the matrix
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float b0, b1, a0, a1, a2, a3, c0, c1, c2, c3;
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b0 = acosf(m[2][2]);
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b1 = (float) NLMISC::Pi - b0;
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float sb0 = sinf(b0), sb1 = sinf(b1);
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if (fabsf(sb0) > 10E-6)
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{
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a0 = m[2][0] / sb0;
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c0 = m[1][2] / sb0;
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}
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else
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{
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a0 = c0 = 1.f;
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}
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if (fabs(sb1) > 10E-6)
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{
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a1 = m[2][0] / sb1;
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c1 = m[1][2] / sb1;
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}
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else
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{
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a1 = c1 = 1.f;
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}
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a2 = (float) NLMISC::Pi - a0;
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a3 = (float) NLMISC::Pi - a1;
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c2 = (float) NLMISC::Pi - c0;
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c3 = (float) NLMISC::Pi - c1;
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NLMISC::CVector sol[] =
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{
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NLMISC::CVector(b0, a0, c0)
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,NLMISC::CVector(b0, a2, c0)
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,NLMISC::CVector(b0, a0, c2)
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,NLMISC::CVector(b0, a2, c2)
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,NLMISC::CVector(b1, a1, c1)
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,NLMISC::CVector(b1, a3, c1)
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,NLMISC::CVector(b1, a1, c3)
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,NLMISC::CVector(b1, a3, c3)
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};
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// now we take the triplet that fit best the 6 other equations
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float bestGap = 0.f;
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uint bestIndex;
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for (uint k = 0; k < 8; ++k)
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{
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float ca = cosf(sol[k].x), sa = sinf(sol[k].x)
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, cb = cosf(sol[k].y), sb = sinf(sol[k].y)
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, cc = cosf(sol[k].z), sc = sinf(sol[k].z);
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float gap = fabsf(m[0][0] - ca * cb * cc + sa * sc);
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gap += fabsf(m[1][0] + cc * sa + ca * cb *sc);
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gap += fabsf(m[0][1] - cb * cc * sa - ca * sc);
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gap += fabsf(m[0][1] - cb * cc * sa - ca * sc);
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gap += fabsf(m[1][1] - ca * cc + cb * sa * sc);
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gap += fabsf(m[2][1] - sb *ca);
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gap += fabsf(m[0][2] + cc * sb);
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if (k == 0 || gap < bestGap)
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{
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bestGap = gap;
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bestIndex = k;
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}
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}
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return sol[bestIndex];
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}
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void CBasisEdit::updateAnglesFromReader()
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{
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nlassert(_Wrapper); // _Wrapper should have been set before init !!
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// read plane basis
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NL3D::CPlaneBasis pb = _Wrapper->get();
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NLMISC::CMatrix mat;
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mat.setRot(pb.X, pb.Y, pb.X ^ pb.Y);
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NLMISC::CVector angles = GetEulerAngles(mat);
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m_PsiCtrl.SetScrollPos((uint) (360.f * angles.x / (2.f * (float) NLMISC::Pi)));
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m_ThetaCtrl.SetScrollPos((uint) (360.f * angles.y / (2.f * (float) NLMISC::Pi)));
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m_PhiCtrl.SetScrollPos((uint) (360.f * angles.z / (2.f * (float) NLMISC::Pi)));
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UpdateData(FALSE);
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}
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// just project a vector with orthogonal proj
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static CPoint BasisVectXForm(NLMISC::CVector &v, float size)
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{
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const float sq = sqrtf(2.f) / 2.f;
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return CPoint((int) (size * (sq * (v.x + v.y) )), (int) (size * (-v.z + sq * (v.x - v.y))));
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}
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// draw a basis using the given colors, and hte given dc
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void DrawBasisInDC(const CPoint ¢er, float size, const NLMISC::CMatrix &m, CDC &dc, NLMISC::CRGBA col[3])
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{
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// draw the basis
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CPoint px = center + BasisVectXForm(m.getI(), size);
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CPoint py = center + BasisVectXForm(m.getJ(), size);
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CPoint pz = center + BasisVectXForm(m.getK(), size);
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CPen p[3];
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p[0].CreatePen(PS_SOLID, 1, col[0].R + (col[0].G << 8) + (col[0].B << 16) );
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p[1].CreatePen(PS_SOLID, 1, col[1].R + (col[1].G << 8) + (col[1].B << 16) );
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p[2].CreatePen(PS_SOLID, 1, col[2].R + (col[2].G << 8) + (col[2].B << 16) );
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// draw letters indicating each axis
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// X
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CPen *old = dc.SelectObject(&p[0]);
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dc.MoveTo(center);
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dc.LineTo(px);
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dc.MoveTo(px + CPoint(2, 2));
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dc.LineTo(px + CPoint(5, 5));
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dc.MoveTo(px + CPoint(4, 2));
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dc.LineTo(px + CPoint(3, 5));
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// Y
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dc.SelectObject(&p[1]);
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dc.MoveTo(center);
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dc.LineTo(py);
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dc.MoveTo(py + CPoint(2, 2));
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dc.LineTo(py + CPoint(4, 4));
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dc.MoveTo(py + CPoint(4, 2));
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dc.LineTo(py + CPoint(1, 5));
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// Z
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dc.SelectObject(&p[2]);
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dc.MoveTo(center);
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dc.LineTo(pz);
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dc.MoveTo(pz + CPoint(2, 2));
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dc.LineTo(pz + CPoint(5, 2));
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dc.MoveTo(pz + CPoint(4, 2));
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dc.LineTo(pz + CPoint(1, 5));
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dc.MoveTo(pz + CPoint(2, 4));
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dc.LineTo(pz + CPoint(5, 4));
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dc.SelectObject(old);
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}
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void CBasisEdit::OnPaint()
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{
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CPaintDC dc(this); // device context for painting
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NLMISC::CRGBA c1[] ={ NLMISC::CRGBA::White, NLMISC::CRGBA::White, NLMISC::CRGBA::White };
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NLMISC::CRGBA c2[] ={ NLMISC::CRGBA::Green, NLMISC::CRGBA::Green, NLMISC::CRGBA::Red };
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if (_Wrapper)
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{
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// read plane basis
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NL3D::CPlaneBasis pb = _Wrapper->get();
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CPoint center(20, 20);
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// draw a white box on the left
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dc.FillSolidRect(0, 0, 39, 39, 0x777777);
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NLMISC::CMatrix m;
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m.identity();
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DrawBasisInDC(center, 18, m, dc, c1);
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m.setRot(pb.X, pb.Y, pb.X ^ pb.Y);
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DrawBasisInDC(center, 18, m, dc, c2);
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}
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// Do not call CDialog::OnPaint() for painting messages
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}
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void CBasisEdit::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
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{
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UpdateData();
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if (nSBCode == SB_THUMBPOSITION || nSBCode == SB_THUMBTRACK)
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{
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NLMISC::CVector angles(2.f * (float) NLMISC::Pi * m_PsiCtrl.GetScrollPos() / 360.f
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, 2.f * (float) NLMISC::Pi * m_ThetaCtrl.GetScrollPos() / 360.f
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, 2.f * (float) NLMISC::Pi * m_PhiCtrl.GetScrollPos() / 360.f
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);
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if (pScrollBar == &m_PsiCtrl)
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{
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angles.x = 2.f * (float) NLMISC::Pi * nPos / 360.f;
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m_PsiCtrl.SetScrollPos(nPos);
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}
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if (pScrollBar == &m_ThetaCtrl)
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{
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angles.y = 2.f * (float) NLMISC::Pi * nPos / 360.f;
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m_ThetaCtrl.SetScrollPos(nPos);
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}
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if (pScrollBar == &m_PhiCtrl)
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{
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angles.z = 2.f * (float) NLMISC::Pi * nPos / 360.f;
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m_PhiCtrl.SetScrollPos(nPos);
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}
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NLMISC::CMatrix mat = BuildEulerMatrix(angles.x, angles.y, angles.z);
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NL3D::CPlaneBasis pb;
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pb.X = mat.getI();
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pb.Y = mat.getJ();
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_Wrapper->setAndUpdateModifiedFlag(pb);
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Invalidate();
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}
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CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
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UpdateData(FALSE);
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}
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