[4] | 1 | #include <math.h> |
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| 2 | |
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[433] | 3 | #include <GL/glu.h> // Added! for gluUnProject() calls. [ben 27Sep13] |
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| 4 | |
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[4] | 5 | #include "Warp.h" |
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| 6 | |
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| 7 | using namespace projection; |
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| 8 | |
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| 9 | Warp::Warp() |
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| 10 | { |
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| 11 | m_bEnabled = true; |
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| 12 | m_pCtrlPoints = NULL; |
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| 13 | setNumCtrlPoints(4); |
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| 14 | m_gridSize = 24; |
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| 15 | m_zoom = 1.0f; |
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| 16 | m_selectedCtrlPoint = -1; |
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| 17 | m_bShowCtrlPoints = true; |
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| 18 | } |
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| 19 | |
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| 20 | Warp::~Warp() |
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| 21 | { |
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| 22 | } |
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| 23 | |
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[433] | 24 | void Warp::draw(bool bForExport, bool bForBlend) |
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[4] | 25 | { |
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| 26 | glPushAttrib(GL_ALL_ATTRIB_BITS); |
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| 27 | |
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| 28 | glMatrixMode(GL_PROJECTION); |
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| 29 | glLoadIdentity(); |
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| 30 | |
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| 31 | glGetIntegerv(GL_VIEWPORT, m_viewport); |
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| 32 | |
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| 33 | glOrtho(-0.5f, 0.5f, -0.5f, 0.5f, -1.0f, 1.0f); |
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| 34 | glGetDoublev(GL_PROJECTION_MATRIX, m_projMatrix); |
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| 35 | |
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| 36 | glMatrixMode(GL_MODELVIEW); |
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| 37 | glPushMatrix(); |
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| 38 | glLoadIdentity(); |
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| 39 | if (!bForExport) |
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| 40 | glScalef(m_zoom, m_zoom, 1.0f); |
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| 41 | glGetDoublev(GL_MODELVIEW_MATRIX, m_modelMatrix); |
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| 42 | |
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| 43 | glDisable(GL_LIGHTING); |
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| 44 | glColor3f(1.0, 1.0, 1.0); |
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| 45 | glEnable(GL_TEXTURE_2D); |
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| 46 | glEnable(GL_MAP2_VERTEX_3); |
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| 47 | glEnable(GL_MAP2_TEXTURE_COORD_2); |
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| 48 | glMapGrid2f(m_gridSize, 0.0f, 1.0f, m_gridSize, 0.0f, 1.0f); |
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| 49 | glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, m_numCtrlPoints, 0, 1, m_numCtrlPoints * 3, m_numCtrlPoints, m_pCtrlPoints); |
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| 50 | GLfloat pTexCoords[2][2][2] = { |
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| 51 | {{0.0f, 0.0f}, {1.0f, 0.0f}}, |
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| 52 | {{0.0f, 1.0f}, {1.0f, 1.0f}}}; |
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| 53 | glMap2f(GL_MAP2_TEXTURE_COORD_2, 0.0f, 1.0f, 2, 2, 0.0f, 1.0f, 4, 2, &pTexCoords[0][0][0]); |
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| 54 | glEvalMesh2(GL_FILL, 0, m_gridSize, 0, m_gridSize); |
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| 55 | |
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| 56 | if (m_bShowCtrlPoints && !bForExport) |
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| 57 | { |
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| 58 | glDisable(GL_TEXTURE_2D); |
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[433] | 59 | glDisable(GL_DEPTH_TEST); |
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| 60 | |
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| 61 | glLineWidth(1.0f); |
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| 62 | for (int y=0; y<m_numCtrlPoints; ++y) |
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| 63 | { |
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| 64 | for (int x=0; x<m_numCtrlPoints; ++x) |
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| 65 | { |
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| 66 | float dx = 1.0f / (m_numCtrlPoints-1) * (float)x - 0.5f; |
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| 67 | float dy = 1.0f / (m_numCtrlPoints-1) * (float)y - 0.5f; |
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| 68 | if (m_selectedCtrlPoint == y*m_numCtrlPoints+x) |
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| 69 | glColor3f(0.0f, 1.0f, 0.0f); |
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| 70 | else |
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| 71 | { |
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| 72 | if (bForBlend) |
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| 73 | glColor3f(0.0f, 0.0f, 1.0f); |
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| 74 | else |
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| 75 | glColor3f(1.0f, 1.0f, 1.0f); |
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| 76 | } |
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| 77 | glBegin(GL_LINES); |
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| 78 | glVertex3f(dx, dy, 0.0f); |
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| 79 | glVertex3fv(&m_pCtrlPoints[(y*m_numCtrlPoints+x)*3]); |
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| 80 | glEnd(); |
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| 81 | } |
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| 82 | } |
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| 83 | |
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[4] | 84 | glPointSize(6.0f); |
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| 85 | glColor3f(1.0f, 1.0f, 0.0f); |
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| 86 | glBegin(GL_POINTS); |
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| 87 | for (int i=0; i<m_numCtrlPoints*m_numCtrlPoints; ++i) { |
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| 88 | if (i != m_selectedCtrlPoint) |
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| 89 | glVertex3fv(&m_pCtrlPoints[i*3]); |
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| 90 | } |
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| 91 | glEnd(); |
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| 92 | if (m_selectedCtrlPoint >= 0) |
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| 93 | { |
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| 94 | glColor3f(1.0f, 0.0f, 0.0f); |
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| 95 | glBegin(GL_POINTS); |
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| 96 | glVertex3fv(&m_pCtrlPoints[m_selectedCtrlPoint*3]); |
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| 97 | glEnd(); |
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| 98 | } |
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| 99 | } |
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| 100 | |
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| 101 | glPopMatrix(); |
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| 102 | |
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| 103 | glPopAttrib(); |
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| 104 | } |
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| 105 | |
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| 106 | bool Warp::pick(int x, int y) |
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| 107 | { |
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| 108 | if (!m_bEnabled) |
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| 109 | return 0; |
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| 110 | |
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| 111 | m_lastMouseX = x; |
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| 112 | m_lastMouseY = y; |
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| 113 | |
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| 114 | int newCtrlPoint = pickCtrlPoint(x, y); |
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| 115 | if (newCtrlPoint != m_selectedCtrlPoint && newCtrlPoint >= 0) |
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| 116 | { |
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| 117 | m_selectedCtrlPoint = newCtrlPoint; |
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| 118 | return true; |
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| 119 | } |
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| 120 | return false; |
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| 121 | } |
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| 122 | |
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| 123 | bool Warp::drag(int x, int y) |
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| 124 | { |
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| 125 | if (!m_bEnabled) |
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| 126 | return 0; |
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| 127 | |
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| 128 | if (m_selectedCtrlPoint < 0) |
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| 129 | return false; |
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| 130 | |
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| 131 | GLdouble objx, objy, objz; |
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| 132 | GLdouble objx2, objy2, objz2; |
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| 133 | |
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| 134 | gluUnProject(x - m_lastMouseX, -(y - m_lastMouseY), 0.95, |
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| 135 | m_modelMatrix, m_projMatrix, m_viewport, |
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| 136 | &objx, &objy, &objz); |
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| 137 | gluUnProject(0, 0, 0.95, |
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| 138 | m_modelMatrix, m_projMatrix, m_viewport, |
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| 139 | &objx2, &objy2, &objz2); |
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| 140 | m_pCtrlPoints[m_selectedCtrlPoint * 3 + 0] += objx-objx2; |
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| 141 | m_pCtrlPoints[m_selectedCtrlPoint * 3 + 1] += objy-objy2; |
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| 142 | |
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| 143 | m_lastMouseX = x; |
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| 144 | m_lastMouseY = y; |
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| 145 | |
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| 146 | return true; |
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| 147 | } |
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| 148 | |
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| 149 | void Warp::setEnabled(bool bEnabled) |
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| 150 | { |
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| 151 | m_bEnabled = bEnabled; |
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| 152 | } |
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| 153 | |
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| 154 | bool Warp::getEnabled() const |
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| 155 | { |
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| 156 | return m_bEnabled; |
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| 157 | } |
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| 158 | |
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| 159 | void Warp::setNumCtrlPoints(int num) |
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| 160 | { |
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| 161 | if (num == 0) |
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| 162 | return; |
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| 163 | |
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| 164 | if (num > 8) |
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| 165 | num = 8; |
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| 166 | if (num <2) |
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| 167 | num = 2; |
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| 168 | |
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| 169 | if (m_pCtrlPoints) |
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| 170 | delete [] m_pCtrlPoints; |
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| 171 | m_numCtrlPoints = num; |
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| 172 | m_pCtrlPoints = new float[num*num*3]; |
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| 173 | reset(); |
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| 174 | } |
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| 175 | |
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| 176 | int Warp::getNumCtrlPoints() const |
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| 177 | { |
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| 178 | return m_numCtrlPoints; |
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| 179 | } |
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| 180 | |
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| 181 | void Warp::setZoom(float zoom) |
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| 182 | { |
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| 183 | m_zoom = zoom; |
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| 184 | } |
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| 185 | |
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| 186 | float Warp::getZoom() const |
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| 187 | { |
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| 188 | return m_zoom; |
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| 189 | } |
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| 190 | |
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| 191 | void Warp::setGridSize(int gridSize) |
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| 192 | { |
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| 193 | m_gridSize = gridSize; |
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| 194 | } |
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| 195 | |
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| 196 | int Warp::getGridSize() const |
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| 197 | { |
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| 198 | return m_gridSize; |
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| 199 | } |
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| 200 | |
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| 201 | void Warp::setShowCtrlPoints(bool bShow) |
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| 202 | { |
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| 203 | m_bShowCtrlPoints = bShow; |
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| 204 | } |
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| 205 | |
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| 206 | bool Warp::getShowCtrlPoints() const |
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| 207 | { |
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| 208 | return m_bShowCtrlPoints; |
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| 209 | } |
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| 210 | |
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| 211 | void Warp::reset() |
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| 212 | { |
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| 213 | for (int y=0; y<m_numCtrlPoints; ++y) { |
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| 214 | for (int x=0; x<m_numCtrlPoints; ++x) { |
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| 215 | m_pCtrlPoints[(y*m_numCtrlPoints+x)*3+0] = 1.0f / (m_numCtrlPoints-1) * (float)x - 0.5f; |
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| 216 | m_pCtrlPoints[(y*m_numCtrlPoints+x)*3+1] = 1.0f / (m_numCtrlPoints-1) * (float)y - 0.5f; |
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| 217 | m_pCtrlPoints[(y*m_numCtrlPoints+x)*3+2] = 0.0f; |
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| 218 | } |
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| 219 | } |
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| 220 | } |
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| 221 | |
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| 222 | int Warp::pickCtrlPoint(float x, float y) |
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| 223 | { |
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| 224 | int hits; |
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| 225 | |
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| 226 | GLuint selectBuffer[64]; |
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| 227 | glSelectBuffer(sizeof(selectBuffer), selectBuffer); |
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| 228 | |
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| 229 | glRenderMode(GL_SELECT); |
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| 230 | glInitNames(); |
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| 231 | glPushName(~0); |
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| 232 | glMatrixMode(GL_PROJECTION); |
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| 233 | glLoadIdentity(); |
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| 234 | gluPickMatrix(x, m_viewport[3] - y, 8.0, 8.0, m_viewport); |
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| 235 | glMultMatrixd(m_projMatrix); |
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| 236 | glMatrixMode(GL_MODELVIEW); |
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| 237 | glPushMatrix(); |
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| 238 | glLoadIdentity(); |
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| 239 | glMultMatrixd(m_modelMatrix); |
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| 240 | for (int i=0; i<m_numCtrlPoints*m_numCtrlPoints; ++i) { |
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| 241 | glLoadName(i); |
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| 242 | glBegin(GL_POINTS); |
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| 243 | glVertex3fv(&m_pCtrlPoints[i*3]); |
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| 244 | glEnd(); |
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| 245 | } |
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| 246 | glPopMatrix(); |
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| 247 | hits = glRenderMode(GL_RENDER); |
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| 248 | |
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| 249 | if (hits) |
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| 250 | return selectBuffer[3]; |
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| 251 | return ~0; |
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| 252 | } |
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| 253 | |
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| 254 | /** |
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| 255 | * Restore the channel data from XML data. |
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| 256 | * |
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| 257 | * @param element Parent XML element of the warp data. |
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| 258 | */ |
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| 259 | void Warp::initFromDOMElement(const QDomElement& element) |
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| 260 | { |
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| 261 | if (!element.isNull()) |
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| 262 | { |
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| 263 | m_bEnabled = (element.attribute("enabled")=="true"); |
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| 264 | int numCtrlPoints = (int)sqrtf(element.attribute("numCtrlPoints").toInt()); |
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| 265 | if (numCtrlPoints != m_numCtrlPoints) |
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| 266 | setNumCtrlPoints(numCtrlPoints); |
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| 267 | |
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| 268 | int count = 0; |
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| 269 | QDomElement ctrlPointElem = element.firstChildElement("ctrlPoint"); |
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| 270 | while (!ctrlPointElem.isNull()) { |
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| 271 | if (count >= m_numCtrlPoints * m_numCtrlPoints) |
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| 272 | break; |
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| 273 | m_pCtrlPoints[count*3+0] = ctrlPointElem.attribute("x").toDouble(); |
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| 274 | m_pCtrlPoints[count*3+1] = ctrlPointElem.attribute("y").toDouble(); |
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| 275 | m_pCtrlPoints[count*3+2] = 0.0f; |
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| 276 | ctrlPointElem = ctrlPointElem.nextSiblingElement("ctrlPoint"); |
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| 277 | count++; |
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| 278 | } |
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| 279 | } |
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| 280 | } |
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| 281 | |
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| 282 | /** |
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| 283 | * Store the current warp data as XML data. |
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| 284 | * |
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| 285 | * @param name XML node name of the data. |
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| 286 | * @param doc XML document to store the data. |
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| 287 | * @return Current warp data as XML data. |
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| 288 | */ |
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| 289 | QDomElement Warp::domElement(const QString& name, QDomDocument& doc) const |
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| 290 | { |
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| 291 | QDomElement de = doc.createElement(name); |
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| 292 | de.setAttribute("enabled", m_bEnabled?"true":"false"); |
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| 293 | de.setAttribute("numCtrlPoints", m_numCtrlPoints*m_numCtrlPoints); |
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| 294 | for (int i=0; i<m_numCtrlPoints*m_numCtrlPoints; ++i) { |
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| 295 | QDomElement ctrlPointElem = doc.createElement("ctrlPoint"); |
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| 296 | ctrlPointElem.setAttribute("x", m_pCtrlPoints[i*3+0]); |
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| 297 | ctrlPointElem.setAttribute("y", m_pCtrlPoints[i*3+1]); |
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| 298 | de.appendChild(ctrlPointElem); |
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| 299 | } |
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| 300 | |
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| 301 | return de; |
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| 302 | } |
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