Artifact 763d96d274b4db9d807e9a5a06b596ee58161444d17441f085a5bacb8ab6a901:
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r36/cslbase/c_viewpt.cpp
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2011-09-02 18:13:33
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// c_viewpt.cpp // A dialog box to allow adjustment of the viewpoint for // graphics objects. Implemented as a regular window rather // than as a special dialog box since I want almost all of my // "controls" to be custom-drawn, and the usual dialog box stuff // does not seem to help very much. // // Copyright (C)/©/¸ Codemist Ltd, 1995-96 /* Signature: 61b86258 08-Jan-1996 */ #ifdef GRAPHICS_WINDOW #include "cwin.hpp" // What follows is my default transformation matrix. It is pretty // arbitrarily chosen & I may want to change it later. I collected the numbers // by viewing a simple object, selecting a pretty view & dumping the // transformation matrix I had built. fourByFour stdView = { {0.906307792530088, -0.109381667816302, 0.408217878032017, 0.0}, {0.422618249959983, 0.234569751569506, -0.875426094224625, 0.0}, {0.0, 0.965925816196225, 0.258819082769520, 0.0}, {0.0, 0.0, 0.0, 1.0/700.0} }; CViewpointWindow::CViewpointWindow() { activeButton = NULL; mouseDrag = 0; moveObject = 1; for (int i=0; i<60; i++) buttonPressed[i] = 0; // I will create my dialog window at a size that increases somewhat as the // selected screen resolution does, on the hypothesis that people who use high // resolutions will have physically large monitors and that this will then // keep the displayed size of the box very roughly constant across systems. // It will also mean that at higher resolutions the controls have more pixels // in them so should be clearer and the box as a whole remains big enough // to see, while with low resolution displays it doe snot take over quite // all of the screen. int screenWidth = ::GetSystemMetrics(SM_CXSCREEN); dlgWidth = 280; if (screenWidth > 640) dlgWidth = 320; if (screenWidth > 800) dlgWidth = 360; if (screenWidth > 1024) dlgWidth = 400; dlgHeight = (3*dlgWidth)/4; click = dlgWidth/40; setArcPoints(); // I will always start with the control box in the top right hand of the // screen. CreateEx(0, "AfxWnd", "Graphics Viewpoint", WS_POPUP | WS_DLGFRAME | WS_OVERLAPPED, screenWidth-dlgWidth-10, 10, dlgWidth, dlgHeight, NULL, NULL); int fontSize = -((dlgWidth+15)/30); labelFont.CreateFont(fontSize, 0, 0, 0, FW_NORMAL, 0, 0, 0, ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH+FF_DONTCARE, "Arial"); fontSize = -((dlgWidth+10)/20); titleFont.CreateFont(fontSize, 0, 0, 0, FW_BOLD, 0, 0, 0, ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH+FF_DONTCARE, "Arial"); memcpy((void *)view1, (void *)stdView, sizeof(stdView)); memcpy((void *)view2, (void *)stdView, sizeof(stdView)); undoCount = undoPoint = 0; } virtual CViewpointWindow::~CViewpointWindow() { } BEGIN_MESSAGE_MAP(CViewpointWindow, CWnd) ON_WM_SETFOCUS() // ON_WM_KILLFOCUS() ON_WM_ERASEBKGND() ON_WM_PAINT() // ON_WM_CHAR() // ON_WM_KEYDOWN() ON_WM_LBUTTONDOWN() ON_WM_LBUTTONUP() ON_WM_MOUSEMOVE() ON_WM_LBUTTONDBLCLK() END_MESSAGE_MAP() // Now message handlers BOOL CViewpointWindow::OnEraseBkgnd(CDC *dc) { CBrush backgroundBrush(RGB(255,255,128)); CBrush *oldBrush = dc->SelectObject(&backgroundBrush); dc->Rectangle(0, 0, dlgWidth, dlgHeight); dc->SelectObject(oldBrush); return TRUE; } void CViewpointWindow::LText(CDC *dc, int x1, int y, char *s) { int n = strlen(s); dc->TextOut(x1, y, s, n); } void CViewpointWindow::CText(CDC *dc, int x1, int x2, int y, char *s) { int n = strlen(s); CSize w = dc->GetTextExtent(s, n); int slack = (x2 - x1) - w.cx; dc->TextOut(x1+slack/2, y, s, n); } void CViewpointWindow::RText(CDC *dc, int x2, int y, char *s) { int n = strlen(s); CSize w = dc->GetTextExtent(s, n); dc->TextOut(x2-w.cx, y, s, n); } #define B_MID 0 #define B_UP 1 #define B_DOWN 2 #define B_LEFT 3 #define B_RIGHT 4 #define B_RADIO 5 #define B_CLOSE 6 #define B_TEXT 7 #define B_TWIST 8 const ButtonPlace buttonLocations[] = { #define mobjC 0 { mobjC, 14, 8, 2, B_RADIO, NULL}, // What moves - eye or object? #define meyeC 1 { meyeC, 14, 6, 2, B_RADIO, NULL}, // (Radio buttons come first in this list) #define far3C 2 { far3C, 2, 28, 2, B_LEFT, NULL}, // The perspective FAR/NEAR arrows #define far2C 3 { far2C, 4, 28, 2, B_LEFT, NULL}, #define far1C 4 { far1C, 6, 28, 2, B_LEFT, NULL}, #define far0C 5 { far0C, 8, 28, 2, B_MID, NULL}, #define near1C 6 { near1C, 10, 28, 2, B_RIGHT, NULL}, #define near2C 7 { near2C, 12, 28, 2, B_RIGHT, NULL}, #define near3C 8 { near3C, 14, 28, 2, B_RIGHT, NULL}, #define smal3C 9 { smal3C, 2, 22, 2, B_LEFT, NULL}, // The image size SMALL/LARGE arrows #define smal2C 10 {smal2C, 4, 22, 2, B_LEFT, NULL}, #define smal1C 11 {smal1C, 6, 22, 2, B_LEFT, NULL}, #define big0C 12 {big0C, 8, 22, 2, B_MID, NULL}, #define big1C 13 {big1C, 10, 22, 2, B_RIGHT, NULL}, #define big2C 14 {big2C, 12, 22, 2, B_RIGHT, NULL}, #define big3C 15 {big3C, 14, 22, 2, B_RIGHT, NULL}, #define left3C 16 {left3C, 2, 12, 2, B_LEFT, NULL}, // The image position LEFT/RIGHT arrows #define left2C 17 {left2C, 4, 12, 2, B_LEFT, NULL}, #define left1C 18 {left1C, 6, 12, 2, B_LEFT, NULL}, #define midC 19 {midC, 8, 12, 2, B_MID, NULL}, #define right1C 20 {right1C, 10, 12, 2, B_RIGHT, NULL}, #define right2C 21 {right2C, 12, 12, 2, B_RIGHT, NULL}, #define right3C 22 {right3C, 14, 12, 2, B_RIGHT, NULL}, #define down3C 23 {down3C, 8, 18, 2, B_DOWN, NULL}, // The image position UP/DOWN arrows #define down2C 24 {down2C, 8, 16, 2, B_DOWN, NULL}, #define down1C 25 {down1C, 8, 14, 2, B_DOWN, NULL}, #define up1C 26 {up1C, 8, 10, 2, B_UP, NULL}, #define up2C 27 {up2C, 8, 8, 2, B_UP, NULL}, #define up3C 28 {up3C, 8, 6, 2, B_UP, NULL}, #define rleft3C 29 {rleft3C, 24, 12, 2, B_LEFT, NULL}, // The rotation turntable-rotate arrows #define rleft2C 30 {rleft2C, 26, 12, 2, B_LEFT, NULL}, #define rleft1C 31 {rleft1C, 28, 12, 2, B_LEFT, NULL}, #define backC 32 {backC, 30, 12, 2, B_MID, NULL}, #define rrt1C 33 {rrt1C, 32, 12, 2, B_RIGHT, NULL}, #define rrt2C 34 {rrt2C, 34, 12, 2, B_RIGHT, NULL}, #define rrt3C 35 {rrt3C, 36, 12, 2, B_RIGHT, NULL}, #define rdown3C 36 {rdown3C, 30, 18, 2, B_DOWN, NULL}, // Rotation roll forwards/backwards arrows #define rdown2C 37 {rdown2C, 30, 16, 2, B_DOWN, NULL}, #define rdown1C 38 {rdown1C, 30, 14, 2, B_DOWN, NULL}, #define rup1C 39 {rup1C, 30, 10, 2, B_UP, NULL}, #define rup2C 40 {rup2C, 30, 8, 2, B_UP, NULL}, #define rup3C 41 {rup3C, 30, 6, 2, B_UP, NULL}, #define closeC 42 {closeC, 38, 1, 1, B_CLOSE, NULL}, #define showC 43 {showC, 18, 14, 4, B_TEXT, "show"}, #define undoC 44 {undoC, 18, 18, 4, B_TEXT, "undo"}, #define stdC 45 {stdC, 19, 25, 3, B_TEXT, "Std"}, #define XC 46 {XC, 19, 28, 3, B_TEXT, "X"}, #define YC 47 {YC, 24, 25, 3, B_TEXT, "Y"}, #define ZC 48 {ZC, 24, 28, 3, B_TEXT, "Z"}, #define V1C 49 {V1C, 29, 25, 3, B_TEXT, "V1"}, #define V2C 50 {V2C, 29, 28, 3, B_TEXT, "V2"}, #define SV1C 51 {SV1C, 34, 25, 4, B_TEXT, "set V1"}, #define SV2C 52 {SV2C, 34, 28, 4, B_TEXT, "set V2"}, #define twl3C 53 {twl3C, 1, 0, 0, B_TWIST, NULL}, #define twl2C 54 {twl2C, 1, 1, 0, B_TWIST, NULL}, #define twl1C 55 {twl1C, 1, 2, 0, B_TWIST, NULL}, #define twl0C 56 {twl0C, 1, 3, 0, B_TWIST, NULL}, #define twr1C 57 {twr1C, 1, 4, 0, B_TWIST, NULL}, #define twr2C 58 {twr2C, 1, 5, 0, B_TWIST, NULL}, #define twr3C 59 {twr3C, 1, 6, 0, B_TWIST, NULL}, { 0, 0, 0, 0, 0, NULL} }; #define X 255 typedef unsigned char two_bytes[2]; typedef two_bytes seven_points[7]; const seven_points buttonShapes[] = { {{2,2}, {2,4}, {4,4}, {4,2}, {X,0}, {0,0}, {0,0}}, // mid {{0,3}, {3,6}, {6,3}, {3,0}, {X,0}, {0,0}, {0,0}}, // mid selected {{1,1}, {5,1}, {3,5}, {X,0}, {0,0}, {0,0}, {0,0}}, // up {{2,1}, {2,3}, {1,3}, {3,5}, {5,3}, {4,3}, {4,1}}, // up selected {{3,1}, {1,5}, {5,5}, {X,0}, {0,0}, {0,0}, {0,0}}, // down {{3,0}, {5,3}, {4,3}, {4,5}, {2,5}, {2,3}, {1,3}}, // down selected {{1,3}, {5,1}, {5,5}, {X,0}, {0,0}, {0,0}, {0,0}}, // left {{0,3}, {3,5}, {3,4}, {5,4}, {5,2}, {3,2}, {3,1}}, // left selected {{1,1}, {1,5}, {5,3}, {X,0}, {0,0}, {0,0}, {0,0}}, // right {{1,2}, {1,4}, {3,4}, {3,5}, {5,3}, {3,1}, {3,2}} // right selected }; CPoint innerArc[8], outerArc[8]; CRect innerRect, outerRect; CRgn arcRegions[7]; void CViewpointWindow::DrawButton(CDC *dc, const ButtonPlace *pb) { const two_bytes *p; int i; POINT pp[8]; CRect r; CPen darkGrayPen(PS_SOLID, 0, RGB(128, 128, 128)); int xx = click*pb->x, yy = click*pb->y; int width = click*pb->width; int flavour = 2*pb->flavour + buttonPressed[pb->id]; switch (flavour) { default: p = buttonShapes[flavour]; dc->SelectStockObject(BLACK_PEN); dc->MoveTo(xx, yy); dc->LineTo(xx+2*click, yy); dc->LineTo(xx+2*click, yy-2*click); dc->MoveTo(xx, yy); dc->LineTo(xx, yy-2*click); dc->LineTo(xx+2*click, yy-2*click); dc->SelectStockObject(NULL_PEN); for (i=0; i<7 && p[i][0] != X; i++) { int dx = p[i][0], dy = p[i][1]; if (dx < 3) dx = dx*3; else if (dx > 3) dx = 2*click-(6-dx)*3; else dx = click; if (dy < 3) dy = dy*3; else if (dy > 3) dy = 2*click-(6-dy)*3; else dy = click; pp[i].x = xx + dx; pp[i].y = yy - dy; } dc->SelectStockObject(BLACK_BRUSH); dc->Polygon(pp, i); return; case 2*B_CLOSE+1: dc->SelectStockObject(GRAY_BRUSH); dc->Rectangle(xx, yy-click, xx+click+2, yy+2); case 2*B_CLOSE: dc->SelectStockObject(BLACK_PEN); dc->MoveTo(xx, yy); dc->LineTo(xx+click, yy); dc->LineTo(xx, yy-click); dc->LineTo(xx, yy); dc->LineTo(xx+click, yy-click); dc->MoveTo(xx, yy-click); dc->LineTo(xx+click, yy-click); dc->LineTo(xx+click, yy); return; case 2*B_TWIST+1: dc->SelectStockObject(GRAY_BRUSH); case 2*B_TWIST: i = pb->y; pp[0] = innerArc[i]; pp[1] = innerArc[i+1]; pp[2] = outerArc[i]; dc->Polygon(pp, 3); pp[0] = innerArc[i+1]; pp[1] = outerArc[i]; pp[2] = outerArc[i+1]; dc->Polygon(pp, 3); dc->SelectStockObject(BLACK_PEN); dc->MoveTo(innerArc[i]); dc->LineTo(outerArc[i]); dc->MoveTo(innerArc[i+1]); dc->LineTo(outerArc[i+1]); dc->Arc(&innerRect, innerArc[i], innerArc[i+1]); dc->Arc(&outerRect, outerArc[i], outerArc[i+1]); return; case 2*B_RADIO+1: dc->SelectStockObject(GRAY_BRUSH); dc->Ellipse(xx+click-2*3, yy-click-2*3, xx+click+2*3, yy-click+2*3); case 2*B_RADIO: dc->SelectStockObject(BLACK_BRUSH); if (pb->id != moveObject) dc->Ellipse(xx+click-3, yy-click-3, xx+click+3, yy-click+3); dc->SelectStockObject(NULL_BRUSH); dc->SelectStockObject(BLACK_PEN); dc->Ellipse(xx+click-2*3, yy-click-2*3, xx+click+2*3, yy-click+2*3); return; case 2*B_TEXT+1: dc->SelectStockObject(BLACK_PEN); dc->SelectStockObject(NULL_BRUSH); r.SetRect(xx, yy-2*click, xx+width, yy); pp[0].x = 3; pp[0].y = 3; dc->RoundRect(&r, pp[0]); dc->SelectObject(&darkGrayPen); dc->MoveTo(xx+width-2, yy-2*click+1); dc->LineTo(xx+1, yy-2*click+1); dc->LineTo(xx+1, yy-2); CText(dc, xx, xx+width+2, yy-2*click+2, pb->text); dc->SelectStockObject(BLACK_PEN); return; case 2*B_TEXT: dc->SelectStockObject(BLACK_PEN); dc->SelectStockObject(NULL_BRUSH); r.SetRect(xx, yy-2*click, xx+width, yy); pp[0].x = 3; pp[0].y = 3; dc->RoundRect(&r, pp[0]); dc->SelectStockObject(WHITE_PEN); dc->MoveTo(xx+width-2, yy-2*click+1); dc->LineTo(xx+1, yy-2*click+1); dc->LineTo(xx+1, yy-2); dc->SelectObject(&darkGrayPen); dc->LineTo(xx+width-2, yy-2); dc->LineTo(xx+width-2, yy-2*click+1); CText(dc, xx, xx+width, yy-2*click, pb->text); dc->SelectStockObject(BLACK_PEN); return; } } #undef X void copyView(fourByFour *dest, fourByFour *src) { for (int i=0; i<3; i++) for (int j=0; j<3; j++) (*dest)[i][j] = (*src)[i][j]; } void CViewpointWindow::resetXform(int whence) { fourByFour *m = &theApp.mainWindow->graphicsWindow->xform; int i, j; if (whence != Undo) { copyView(&undoStack[undoPoint++ & undoMask], m); if (undoCount != undoMask) undoCount++; } switch (whence) { case Xaxis: for (i=0; i<3; i++) for (j=0; j<3; j++) (*m)[i][j] = 0.0; (*m)[0][1] = (*m)[1][2] = (*m)[2][0] = 1.0; break; case Yaxis: for (i=0; i<3; i++) for (j=0; j<3; j++) (*m)[i][j] = 0.0; (*m)[0][2] = (*m)[1][0] = (*m)[2][1] = 1.0; break; case Zaxis: for (i=0; i<3; i++) for (j=0; j<3; j++) (*m)[i][j] = 0.0; (*m)[0][0] = (*m)[1][1] = (*m)[2][2] = 1.0; break; case StdView: copyView(m, &stdView); break; case View1: copyView(m, &view1); break; case View2: copyView(m, &view2); break; case Undo: if (undoCount == 0) break; copyView(m, &undoStack[--undoPoint & undoMask]); undoCount--; break; } theApp.mainWindow->graphicsWindow->Invalidate(); } void CViewpointWindow::changeXform(double delta[4][4]) { double xform1[4][4]; int i, j, k; copyView(&undoStack[undoPoint++ & undoMask], &theApp.mainWindow->graphicsWindow->xform); if (undoCount != undoMask) undoCount++; for (i=0; i<4; i++) for (k=0; k<4; k++) { double w = 0.0; for (j=0; j<4; j++) w += theApp.mainWindow->graphicsWindow->xform[i][j]*delta[j][k]; xform1[i][k] = w; } for (i=0; i<4; i++) for (j=0; j<4; j++) theApp.mainWindow->graphicsWindow->xform[i][j] = xform1[i][j]; theApp.mainWindow->graphicsWindow->Invalidate(); } const double toRadians = 0.017453292; // pi/180 void CViewpointWindow::rotateXform(int axis, double angle) { if (moveObject) angle = -angle; angle *= toRadians; double rot[4][4]; for (int i=0; i<4; i++) for (int j=0; j<4; j++) rot[i][j] = (i == j) ? 1.0 : 0.0; double c = cos(angle), s = sin(angle); switch (axis) { case Xaxis: rot[1][1] = rot[2][2] = c; rot[1][2] = -s; rot[2][1] = s; break; case Yaxis: rot[0][0] = rot[2][2] = c; rot[0][2] = -s; rot[2][0] = s; break; case Zaxis: rot[1][1] = rot[0][0] = c; rot[1][0] = -s; rot[0][1] = s; break; } changeXform(rot); } void CViewpointWindow::scaleXform(double factor) { double xform1[4][4]; for (int i=0; i<4; i++) for (int j=0; j<4; j++) xform1[i][j] = (i == j) ? 1.0 : 0.0; xform1[3][3] = 1/factor; changeXform(xform1); } void CViewpointWindow::translateXform(double x, double y) { double xform1[4][4]; for (int i=0; i<4; i++) for (int j=0; j<4; j++) xform1[i][j] = (i == j) ? 1.0 : 0.0; if (moveObject) x = -x, y = -y; xform1[3][0] = x; xform1[3][1] = y; changeXform(xform1); } void CViewpointWindow::ButtonAction(int n) { switch (n) { case mobjC: moveObject = 1; SetControl(&buttonLocations[0], 0); SetControl(&buttonLocations[1], 0); return; case meyeC: moveObject = 0; SetControl(&buttonLocations[0], 0); SetControl(&buttonLocations[1], 0); return; case far3C: theApp.mainWindow->graphicsWindow->perspecDistance *= 1.2*1.2*1.2; theApp.mainWindow->graphicsWindow->Invalidate(); return; case far2C: theApp.mainWindow->graphicsWindow->perspecDistance *= 1.2*1.2; theApp.mainWindow->graphicsWindow->Invalidate(); return; case far1C: theApp.mainWindow->graphicsWindow->perspecDistance *= 1.1; theApp.mainWindow->graphicsWindow->Invalidate(); return; case far0C: theApp.mainWindow->graphicsWindow->perspecDistance = 50000.0; theApp.mainWindow->graphicsWindow->Invalidate(); return; case near1C: theApp.mainWindow->graphicsWindow->perspecDistance /= 1.1; theApp.mainWindow->graphicsWindow->Invalidate(); return; case near2C: theApp.mainWindow->graphicsWindow->perspecDistance /= (1.2*1.2); theApp.mainWindow->graphicsWindow->Invalidate(); return; case near3C: theApp.mainWindow->graphicsWindow->perspecDistance /= (1.2*1.2*1.2); theApp.mainWindow->graphicsWindow->Invalidate(); return; case smal3C: scaleXform(1.0/(1.2*1.2*1.2)); return; case smal2C: scaleXform(1.0/(1.2*1.2)); return; case smal1C: scaleXform(1.0/1.1); return; case big0C: scaleXform(theApp.mainWindow->graphicsWindow->xform[3][3]*700.0); return; case big1C: scaleXform(1.1); return; case big2C: scaleXform(1.2*1.2); return; case big3C: scaleXform(1.2*1.2*1.2); return; case left3C: translateXform(2500.0, 0.0); return; case left2C: translateXform(500.0, 0.0); return; case left1C: translateXform(100.0, 0.0); return; case midC: translateXform(-theApp.mainWindow->graphicsWindow->xform[0][3], -theApp.mainWindow->graphicsWindow->xform[1][3]); return; case right1C: translateXform(-100.0, 0.0); return; case right2C: translateXform(-500.0, 0.0); return; case right3C: translateXform(-2500.0, 0.0); return; case down3C: translateXform(0.0, 2500.0); return; case down2C: translateXform(0.0, 500.0); return; case down1C: translateXform(0.0, 100.0); return; case up1C: translateXform(0.0, -100.0); return; case up2C: translateXform(0.0, -500.0); return; case up3C: translateXform(0.0, -2500.0); return; case rleft3C: rotateXform(Yaxis, 22.5); return; case rleft2C: rotateXform(Yaxis, 5.625); return; case rleft1C: rotateXform(Yaxis, 1.125); return; case backC: rotateXform(Yaxis, 180.0); return; case rrt1C: rotateXform(Yaxis, -1.125); return; case rrt2C: rotateXform(Yaxis, -5.625); return; case rrt3C: rotateXform(Yaxis, -22.5); return; case rdown3C: rotateXform(Xaxis, 22.5); return; case rdown2C: rotateXform(Xaxis, 5.625); return; case rdown1C: rotateXform(Xaxis, 1.125); return; case rup1C: rotateXform(Xaxis, -1.125); return; case rup2C: rotateXform(Xaxis, -5.625); return; case rup3C: rotateXform(Xaxis, -22.5); return; case closeC: theApp.mainWindow->graphicsWindow->PostMessage(WM_USER+2, 0, 0); return; case showC: theApp.mainWindow->graphicsWindow->fullRender = 1; theApp.mainWindow->graphicsWindow->Invalidate(); return; case undoC: resetXform(Undo); return; case stdC: resetXform(StdView); return; case XC: resetXform(Xaxis); return; case YC: resetXform(Yaxis); return; case ZC: resetXform(Zaxis); return; case V1C: resetXform(View1); return; case V2C: resetXform(View2); return; case SV1C: memcpy((void *)view1, (void *)theApp.mainWindow->graphicsWindow->xform, sizeof(stdView)); return; case SV2C: memcpy((void *)view2, (void *)theApp.mainWindow->graphicsWindow->xform, sizeof(stdView)); return; case twl3C: rotateXform(Zaxis, 22.5); return; case twl2C: rotateXform(Zaxis, 5.625); return; case twl1C: rotateXform(Zaxis, 1.125); return; case twl0C: rotateXform(Zaxis, 180.0); return; case twr1C: rotateXform(Zaxis, -1.125); return; case twr2C: rotateXform(Zaxis, -5.625); return; case twr3C: rotateXform(Zaxis, -22.5); return; } } void CViewpointWindow::setArcPoints() { innerRect.SetRect(22*click, 2*click, 40*click, 20*click); outerRect.SetRect(20*click, 0, 42*click, 22*click); double a = atan(1/10.0), b, sb, cb, k = (double)click;; for (int i=0; i<8; i++) { b = a*(double)(2*i-7); sb = sin(b); cb = cos(b); innerArc[i].x = 31*click + (int)(9.0*k*sb); innerArc[i].y = 11*click + (int)(9.0*k*cb); outerArc[i].x = 31*click + (int)(11.0*k*sb); outerArc[i].y = 11*click + (int)(11.0*k*cb); } for (i=0; i<7; i++) { CPoint pp[4]; pp[0] = innerArc[i]; pp[1] = outerArc[i]; pp[2] = outerArc[i+1]; pp[3] = innerArc[i+1]; arcRegions[i].CreatePolygonRgn(pp, 4, ALTERNATE); } } void CViewpointWindow::OnPaint() { CPaintDC dc(this); dc.SelectStockObject(NULL_BRUSH); dc.SetBkMode(TRANSPARENT); dc.SelectObject(&titleFont); CText(&dc, 2*click, 16*click, click, "Position"); CText(&dc, 24*click, 38*click, click, "Rotation"); dc.SelectObject(&labelFont); LText(&dc, 2*click, 24*click, "far"); RText(&dc, 16*click, 24*click, "near"); LText(&dc, 2*click, 18*click, "small"); RText(&dc, 16*click, 18*click, "large"); LText(&dc, 2*click, 12*click, "left"); RText(&dc, 16*click, 12*click, "right"); LText(&dc, 10*click+3, 16*click, "down"); LText(&dc, 10*click+3, 4*click,"up"); LText(&dc, 32*click+3, 4*click,"roll"); RText(&dc, 38*click, 12*click, "rotate"); RText(&dc, 38*click, 16*click, "twist"); LText(&dc, 16*click, 6*click, "move object"); LText(&dc, 16*click, 4*click, "move viewpoint"); CBrush backgroundBrush(RGB(255,255,128)); const ButtonPlace *pb = buttonLocations; while (pb->x != 0) { dc.SelectObject(&backgroundBrush); dc.SelectStockObject(NULL_PEN); switch (pb->flavour) { case B_TWIST: break; // fills in its own background case B_CLOSE: dc.Rectangle(click*pb->x, click*(pb->y-1), click*(pb->x+1), click*pb->y); break; default: dc.Rectangle(click*pb->x, click*(pb->y-2), click*(pb->x+pb->width), click*pb->y); break; } DrawButton(&dc, pb); pb++; } dc.SelectStockObject(SYSTEM_FONT); } void CViewpointWindow::OnSetFocus(CWnd *pOldWnd) { SetWindowPos(&wndTop, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_SHOWWINDOW); } void CViewpointWindow::OnKillFocus(CWnd *pNewWnd) { } void CViewpointWindow::OnChar(UINT ch, UINT nRepCnt, UINT nFlags) { DisplayMsg("Viewpoint Window OnChar"); } void CViewpointWindow::OnKeyDown(UINT ch, UINT nRepCnt, UINT nFlags) { DisplayMsg("Viewpoint Window OnKeyDown"); } int CViewpointWindow::inButton(const ButtonPlace *b, int x, int y) { if (b->flavour == B_TWIST) return arcRegions[b->y].PtInRegion(x, y); else return (click*b->x <= x && x < click*(b->x+b->width) && click*((int)b->y-2) <= y && y < click*b->y); } const ButtonPlace *CViewpointWindow::FindControl(int x, int y) { const ButtonPlace *b = buttonLocations; while (b->x != 0) { if (inButton(b, x, y)) return b; b++; } return NULL; } void CViewpointWindow::SetControl(const ButtonPlace *b, int state) { buttonPressed[b->id] = state; CRect r(click*b->x, click*((int)b->y-2), click*(b->x+b->width), click*b->y); if (b->flavour == B_TWIST) InvalidateRgn(&arcRegions[b->y], FALSE); else InvalidateRect(&r, FALSE); } void CViewpointWindow::OnLButtonDown(UINT nFlags, CPoint point) { SetCapture(); const ButtonPlace *b = FindControl(point.x, point.y); if (b == NULL) { mouseDrag = 1; mouseX = point.x; mouseY = point.y; } else { activeButton = b; SetControl(b, 1); } } // If the user double-clicks on the dialog box it will go away. Well, at least // if the double-click is not on a button. void CViewpointWindow::OnLButtonDblClk(UINT nFlags, CPoint point) { if (FindControl(point.x, point.y) == NULL) theApp.mainWindow->graphicsWindow->PostMessage(WM_USER+2, 0, 0); } void CViewpointWindow::OnLButtonUp(UINT nFlags, CPoint point) { ReleaseCapture(); if (mouseDrag) { mouseDrag = 0; activeButton = NULL; return; } if (activeButton == NULL) return; const ButtonPlace *b = activeButton; activeButton = NULL; if (inButton(b, point.x, point.y)) { buttonPressed[b->id] = 0; SetControl(b, 0); ButtonAction(b->id); // Dispatch to some activity } } void CViewpointWindow::OnMouseMove(UINT nFlags, CPoint point) { if (mouseDrag) { WINDOWPLACEMENT w; GetWindowPlacement(&w); w.rcNormalPosition.left += point.x - mouseX; w.rcNormalPosition.right += point.x - mouseX; w.rcNormalPosition.top += point.y - mouseY; w.rcNormalPosition.bottom += point.y - mouseY; SetWindowPlacement(&w); return; } if (activeButton == NULL) return; const ButtonPlace *b = activeButton; if (inButton(b, point.x, point.y)) { if (buttonPressed[b->id] == 0) { buttonPressed[b->id] = 1; SetControl(b, 1); } } else if (buttonPressed[b->id]) { buttonPressed[b->id] = 0; SetControl(b, 0); } } #endif // end of c_viewpt.cpp