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CICA 1992 November
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CICA_MS_Windows_CD-ROM_Walnut_Creek_November_1992.iso
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win3
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programr
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vlibbc
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vlibdemo.c
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1992-02-04
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/****************************************************************************
PROGRAM: Vlibdemo.exe
PURPOSE: To demostrate the usage of Visualib functions.
PROVIDER: Visual Tech, Co.
DATE: January, 1992
FUNCTIONS:
WinMain() - calls initialization function, processes message loop
InitApplication() - initializes window data and registers window
InitInstance() - saves instance handle and creates main window
MainWndProc() - processes messages
About() - processes messages for "About" dialog box
COMMENTS:
****************************************************************************/
#include "windows.h"
#include "vlibdemo.h"
#include "visualib.h"
HANDLE hInst;
HVIEW viewer21, viewer22, viewer31, viewer32, viewer33, viewer34, viewer35;
int demo_flag, demo_type, demo_item;
/****************************************************************************
FUNCTION: WinMain (HANDLE, HANDLE, LPSTR, int)
PURPOSE: calls initialization function, processes message loop
COMMENTS:
Windows recognizes this function by name as the initial entry point
for the program. This function calls the application initialization
routine, if no other instance of the program is running, and always
calls the instance initialization routine. It then executes a message
retrieval and dispatch loop that is the top-level control structure
for the remainder of execution. The loop is terminated when a WM_QUIT
message is received, at which time this function exits the application
instance by returning the value passed by PostQuitMessage().
If this function must abort before entering the message loop, it
returns the conventional value NULL.
****************************************************************************/
int PASCAL WinMain (hInstance, hPrevInstance, lpCmdLine, nCmdShow)
HANDLE hInstance;
HANDLE hPrevInstance;
LPSTR lpCmdLine;
int nCmdShow;
{
MSG msg;
if (!hPrevInstance)
if (!InitApplication (hInstance))
return (FALSE);
if (!InitInstance (hInstance, nCmdShow))
return (FALSE);
while (GetMessage (&msg, NULL, NULL, NULL)) {
TranslateMessage (&msg);
DispatchMessage (&msg);
}
return (msg.wParam);
}
/****************************************************************************
FUNCTION: InitApplication (HANDLE)
PURPOSE: Initializes window data and registers window class
COMMENTS:
This function is called at initialization time only if no other
instances of the application are running. This function performs
initialization tasks that can be done once for any number of running
instances.
In this case, we initialize a window class by filling out a data
structure of type WNDCLASS and calling the Windows RegisterClass()
function. Since all instances of this application use the same window
class, we only need to do this when the first instance is initialized.
****************************************************************************/
BOOL InitApplication (hInstance)
HANDLE hInstance;
{
WNDCLASS wc;
if (InitialGraphics2D (0, 0, 0)) {
return (FALSE);
}
viewer21 = CreateViewer2D ("2D Objects", 10, 10, 100, 100);
SetWindow2D (viewer21, -10, -10, 10, 10);
viewer22 = CreateViewer2D ("U.S. Flag", 10, 10, 400, 217);
SetWindow2D (viewer22, 0, 0, 1, (float) (13.0 / 24.0));
if (InitialGraphics3D (0, 0, 0)) {
return (FALSE);
}
viewer31 = CreateViewer3D ("View Motion", 120, 10, 100, 100);
SetView3D (viewer31, 100, 100, 100, 0, 0, 0, 0);
SetPerspective3D (viewer31, 45, 1, 1, 1000);
viewer32 = CreateViewer3D ("Object Rotation", 230, 10, 100, 100);
SetView3D (viewer32, 100, 100, 100, 0, 0, 0, 0);
SetPerspective3D (viewer32, 45, 1, 1, 1000);
viewer33 = CreateViewer3D ("View Zoom", 230, 130, 100, 100);
SetPolarView3D (viewer33, 1, 1, 0, 20, 75, 45, 0);
SetPerspective3D (viewer33, 90, 1, 1, 1000);
viewer34 = CreateViewer3D ("Ortho Project", 120, 130, 100, 100);
SetPolarView3D (viewer34, 1, 1, 0, 10, 45, 45, 0);
SetOrthogonal3D (viewer34, -10, 10, -10, 10, 1, 100);
viewer35 = CreateViewer3D ("Depth Clipping", 10, 130, 100, 100);
SetPolarView3D (viewer35, 1, 1, 0, 20, 75, 45, 0);
SetPerspective3D (viewer35, 90, 1, 1, 80);
demo_flag = 1;
demo_item = 1;
demo_type = 1;
wc.style = NULL;
wc.lpfnWndProc = MainWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor (NULL, IDC_ARROW);
wc.hbrBackground = GetStockObject (WHITE_BRUSH);
wc.lpszMenuName = "VlibDemo";
wc.lpszClassName = "VlibDemoClass";
return (RegisterClass (&wc));
}
/****************************************************************************
FUNCTION: InitInstance (HANDLE, int)
PURPOSE: Saves instance handle and creates main window
COMMENTS:
This function is called at initialization time for every instance of
this application. This function performs initialization tasks that
cannot be shared by multiple instances.
In this case, we save the instance handle in a static variable and
create and display the main program window.
****************************************************************************/
BOOL InitInstance (hInstance, nCmdShow)
HANDLE hInstance;
int nCmdShow;
{
HWND hWnd;
int sw, sh, ww, wh;
sw = GetSystemMetrics (0);
sh = GetSystemMetrics (1);
hInst = hInstance;
ww = (int) (sw * 0.666);
wh = (int) (sh * 0.666);
sw = (int) (sw * 0.167);
sh = (int) (sh * 0.167);
hWnd = CreateWindow ("VlibDemoClass",
"Visualib 1.0 (C) Demonstration",
WS_OVERLAPPEDWINDOW, sw, sh, ww, wh,
NULL, NULL, hInstance, NULL);
if (!hWnd)
return (FALSE);
ShowWindow (hWnd, nCmdShow);
UpdateWindow (hWnd);
return (TRUE);
}
HANDLE GetPrinterDC ()
{
char pPrintInfo[80];
LPSTR lpTemp;
LPSTR lpPrintType;
LPSTR lpPrintDriver;
LPSTR lpPrintPort;
if (!GetProfileString ("windows", "Device", (LPSTR)"", pPrintInfo, 80))
return (NULL);
lpTemp = lpPrintType = pPrintInfo;
lpPrintDriver = lpPrintPort = 0;
while (*lpTemp) {
if (*lpTemp == ',') {
*lpTemp++ = 0;
while (*lpTemp == ' ')
lpTemp = AnsiNext (lpTemp);
if (!lpPrintDriver)
lpPrintDriver = lpTemp;
else {
lpPrintPort = lpTemp;
break;
}
}
else
lpTemp = AnsiNext (lpTemp);
}
return (CreateDC (lpPrintDriver, lpPrintType, lpPrintPort, (LPSTR) NULL));
}
void USFlag (HDC hDC)
{
short i, j;
float x1, y1, x2, y2;
float width, height;
width = 1;
height = (float) 13 / 24;
x1 = 0;
x2 = width;
y1 = 0;
y2 = height / 13;
BrushColor (hDC, WVRED);
PenColor (hDC, WVRED);
for (i = 0; i < 7; i ++) {
Rectangle2D (hDC, x1, y1, x2, y2);
y1 += height * 2 / 13;
y2 += height * 2 / 13;
}
BrushColor (hDC, WVWHITE);
PenColor (hDC, WVWHITE);
y1 = height / 13;
y2 = height * 2 / 13 - 0.001;
for (i = 0; i < 6; i ++) {
Rectangle2D (hDC, x1, y1, x2, y2);
y1 += height * 2 / 13;
y2 += height * 2 / 13;
}
BrushColor (hDC, WVBLUE);
PenColor (hDC, WVBLUE);
x2 = 10 * width / 24;
y1 = 6 * height / 13;
y2 = height;
Rectangle2D (hDC, x1, y1, x2, y2);
BrushColor (hDC, WVWHITE);
PenColor (hDC, WVWHITE);
x2 /= 6;
x1 = 0.5 * x2;
y2 = height * 7 / 13 / 5;
for (i = 0; i < 6 ; i ++) {
y1 = height - 0.5 * y2;
for (j = 0; j < 5; j ++) {
NsideStar2D (hDC, x1, y1, 0.01, 5);
y1 -= y2;
}
x1 = x1 + x2;
}
x1 = x2;
for (i = 0; i < 5; i ++) {
y1 = height - y2;
for (j = 0; j < 4; j ++) {
NsideStar2D (hDC, x1, y1, 0.01, 5);
y1 -= y2;
}
x1 = x1 + x2;
}
}
void heart (HDC hdc)
{
POINT2D p[20] = {{0, 0, 1}, {0.4, 0.8, 1}, {2, 1.4, 1},
{2.5, -1, 1}, {1, -2, 1}, {0, -3, 1},
{-1, -2, 1}, {-2.5, -1, 1}, {-2, 1.4, 1},
{-0.4, 0.8, 1}, {0, 0, 1}};
float knot[20] = {0, 0, 0, 1, 2, 3, 3, 3,
4, 5, 6, 6, 6};
NURBSCurve2D (hdc, p, 11, knot);
}
void logo (HDC hdc)
{
MoveTo3D (hdc, 0, 0, 0);
LineTo3D (hdc, 1, 1, -1);
LineTo3D (hdc, 1, 1, 1);
LineTo3D (hdc, -1, -1, 1);
LineTo3D (hdc, -1, 1, -1);
LineTo3D (hdc, 1, -1, -1);
LineTo3D (hdc, 1, 1, 1);
LineTo3D (hdc, 1, -1, 1);
LineTo3D (hdc, -1, -1, 1);
LineTo3D (hdc, -1, 1, 1);
LineTo3D (hdc, -1, 1, -1);
LineTo3D (hdc, -1, -1, -1);
LineTo3D (hdc, 1, -1, -1);
LineTo3D (hdc, 1, 1, -1);
LineTo3D (hdc, -1, 1, 1);
LineTo3D (hdc, 0, 0, 0);
LineTo3D (hdc, 1, -1, 1);
LineTo3D (hdc, -1, -1, -1);
LineTo3D (hdc, 0, 0, 0);
}
POINT3D circ[]= {
{1, 0, 0, 1},
{0.66666667, 0.57735027, 0.074074074, 0.66666667},
{0.16666667, 0.86602540, 0.148148148, 0.66666667},
{-0.5, 0.86602540, 0.33333333, 1}
};
void spring (HDC hdc)
{
PushMatrix3D ();
BSplineCurve3D (hdc, circ, 4);
Translate3D (0, 0, 0.33333333);
Rotate3D (120, 'z');
BSplineCurve3D (hdc, circ, 4);
Translate3D (0, 0, 0.33333333);
Rotate3D (120, 'z');
BSplineCurve3D (hdc, circ, 4);
Translate3D (0, 0, 0.33333333);
Rotate3D (120, 'z');
BSplineCurve3D (hdc, circ, 4);
Translate3D (0, 0, 0.33333333);
Rotate3D (120, 'z');
BSplineCurve3D (hdc, circ, 4);
Translate3D (0, 0, 0.33333333);
Rotate3D (120, 'z');
BSplineCurve3D (hdc, circ, 4);
PopMatrix3D ();
}
POINT3D surf[16] = {
{-3, 0, 1, 1},
{1, 4, -1, 1},
{5, -2, 0, 1},
{8, 0, -2, 1},
{-2, 0, -3, 1},
{1, 4, 0, 1},
{5, -2, 1, 1},
{7, 0.6, 1, 1},
{-2, 2, 3, 1},
{1, 4, 3.5, 1},
{5, -2, 2, 1},
{7.5, 0.7, 3, 1},
{-2, 1, 6, 1},
{1, 4, 4, 1},
{5, -1, 4, 1},
{8, 0.5, 6.6, 1}
};
float sknot[20] = {0, 0, 0, 1, 1, 1, 2, 2, 3, 4, 4, 4};
float tknot[20] = {0, 0, 0, 1, 1, 1, 2, 2, 3, 4, 4, 4};
void Object2D (HDC hdc)
{
short i;
DisplayViewerFrame2D (hdc, viewer21, WVRED);
DisplayViewerName2D (hdc, viewer21, WVBLUE, 0);
BeginDoubleBuffer2D (&hdc, viewer21);
SelectViewer2D (viewer21);
PenColor (hdc, WVRED);
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer2D (hdc, viewer21, WVGRAY);
BrushColor (hdc, WVGREEN);
NsideFlower2D (hdc, 0, 0, 6, 4.5, 10);
BrushColor (hdc, WVRED);
NsideStar2D (hdc, 0, 0, 4, 5);
Rotate2D (6);
UpdateBuffer2D (hdc, viewer21);
}
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer2D (hdc, viewer21, WVGRAY);
BrushColor (hdc, WVGREEN);
NsideFlower2D (hdc, 0, 0, 6, 4.5, 10);
BrushColor (hdc, WVRED);
NsideStar2D (hdc, 0, 0, 4, 5);
MoveViewer2D (viewer21, 0.25, 0);
UpdateBuffer2D (hdc, viewer21);
}
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer2D (hdc, viewer21, WVGRAY);
BrushColor (hdc, WVGREEN);
NsideFlower2D (hdc, 0, 0, 6, 4.5, 10);
BrushColor (hdc, WVRED);
NsideStar2D (hdc, 0, 0, 4, 5);
Scale2D (1.06, 1.06);
UpdateBuffer2D (hdc, viewer21);
}
EndDoubleBuffer2D (&hdc, viewer21);
}
void ViewerMotion3D (HDC hdc)
{
short i;
DisplayViewerFrame3D (hdc, viewer31, WVBLUE);
DisplayViewerName3D (hdc, viewer31, WVBLUE, 0);
BeginDoubleBuffer3D (&hdc, viewer31);
SelectViewer3D (viewer31);
BrushColor (hdc, WVRED);
for (i = 0; i < 5*demo_type; i ++) {
MoveViewer3D (viewer31, 0, 0, -10);
ClearViewer3D (hdc, viewer31, WVGRAY);
Box3D (hdc, -50, -50, 0, 50, 50, 50);
UpdateBuffer3D (hdc, viewer31);
}
BrushColor (hdc, WVGREEN);
for (i = 0; i < 5*demo_type; i ++) {
MoveViewer3D (viewer31, 0, 5, 0);
ClearViewer3D (hdc, viewer31, WVGRAY);
Box3D (hdc, -50, -50, 0, 50, 50, 50);
UpdateBuffer3D (hdc, viewer31);
}
BrushColor (hdc, WVBLUE);
for (i = 0; i < 5*demo_type; i ++) {
MoveViewer3D (viewer31, 5, 0, 0);
ClearViewer3D (hdc, viewer31, WVGRAY);
Cube3D (hdc, -50, -50, 0, 50, 50, 50);
UpdateBuffer3D (hdc, viewer31);
}
BrushColor (hdc, WVYELLOW);
for (i = 0; i < 5*demo_type; i ++) {
RotateWorld3D (viewer31, 0, 0, 6);
ClearViewer3D (hdc, viewer31, WVGRAY);
Cube3D (hdc, -50, -50, 0, 50, 50, 50);
UpdateBuffer3D (hdc, viewer31);
}
BrushColor (hdc, WVLIGHTBLUE);
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer3D (hdc, viewer31, WVGRAY);
RotateWorld3D (viewer31, 0, 6, 0);
Cube3D (hdc, -50, -50, 0, 50, 50, 50);
UpdateBuffer3D (hdc, viewer31);
}
BrushColor (hdc, WVBROWN);
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer3D (hdc, viewer31, WVGRAY);
RotateWorld3D (viewer31, 6, 0, 0);
Cube3D (hdc, -50, -50, 0, 50, 50, 50);
UpdateBuffer3D (hdc, viewer31);
}
EndDoubleBuffer3D (&hdc, viewer31);
}
void ObjectMotion3D (HDC hdc)
{
short i;
DisplayViewerName3D (hdc, viewer32, WVBLUE, 0);
DisplayViewerFrame3D (hdc, viewer32, WVBLUE);
BeginDoubleBuffer3D (&hdc, viewer32);
SelectViewer3D (viewer32);
BrushColor (hdc, WVRED);
for (i = 0; i <= 5*demo_type; i ++) {
ClearViewer3D (hdc, viewer32, WVGRAY);
Cylinder3D (hdc, 0, 0, 0, 30, 50);
Rotate3D (3, 'z');
Rotate3D (6, 'x');
Rotate3D (3, 'y');
UpdateBuffer3D (hdc, viewer32);
}
EndDoubleBuffer3D (&hdc, viewer32);
}
void ViewerZoom3D (HDC hdc)
{
short i;
DisplayViewerFrame3D (hdc, viewer33, WVRED);
DisplayViewerName3D (hdc, viewer33, WVBLUE, 0);
BeginDoubleBuffer3D (&hdc, viewer33);
SelectViewer3D (viewer33);
BrushColor (hdc, WVGREEN);
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer3D (hdc, viewer33, WVGRAY);
MarkPosition3D (hdc, 0, 0, 0, 5);
Cone3D (hdc, 0, 0, 0, 3, 10);
ZoomViewer3D (viewer33, 1.05);
UpdateBuffer3D (hdc, viewer33);
}
EndDoubleBuffer3D (&hdc, viewer33);
}
void OrthoProject3D (HDC hdc)
{
short i;
DisplayViewerFrame3D (hdc, viewer34, WVRED);
DisplayViewerName3D (hdc, viewer34, WVBLUE, 0);
SelectViewer3D (viewer34);
BrushColor (hdc, WVGREEN);
Sphere3D (hdc, 3, -1, -4, 3, 20, 10);
}
void ViewerClip3D (HDC hdc)
{
short i;
DisplayViewerFrame3D (hdc, viewer35, WVRED);
DisplayViewerName3D (hdc, viewer35, WVBLUE, 0);
BeginDoubleBuffer3D (&hdc, viewer35);
SelectViewer3D (viewer35);
BrushColor (hdc, WVBLUE);
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer3D (hdc, viewer35, WVGRAY);
NsideStar3D (hdc, 0, 0, 0, 5, 20, 5);
MoveViewer3D (viewer35, 0, 0, -0.5);
Rotate3D (6 * i, 'z');
UpdateBuffer3D (hdc, viewer35);
}
EndDoubleBuffer3D (&hdc, viewer35);
}
void Flag(HDC hdc)
{
short i;
short x, y, w, h;
SelectViewer2D (viewer22);
GetViewport2D (viewer22, &x, &y, &w, &h);
USFlag (hdc);
DisplayViewerFrame2D (hdc, viewer22, WVBLACK);
DisplayViewerName2D (hdc, viewer22, WVBLUE, 1);
SetViewport2D (viewer22, 350, 230, 60, 30);
USFlag (hdc);
DisplayViewerFrame2D (hdc, viewer22, WVBLACK);
SetViewport2D (viewer22, x, y, w, h);
}
void ViewerReset ()
{
SetViewerName2D (viewer21, "2D Objects");
SetViewport2D(viewer21, 10, 10, 100, 100);
SetWindow2D (viewer21, -10, -10, 10, 10);
SetViewerName2D (viewer22, "U.S. Flag");
SetViewport2D(viewer22, 10, 10, 400, 217);
SetWindow2D (viewer22, 0, 0, 1, (float) (13.0 / 24.0));
SetViewerName3D (viewer31, "View Motion");
SetViewport3D(viewer31, 120, 10, 100, 100);
SetView3D (viewer31, 100, 100, 100, 0, 0, 0, 0);
SetPerspective3D (viewer31, 45, 1, 1, 1000);
SetViewerName3D (viewer32, "Object Rotation");
SetViewport3D(viewer32, 230, 10, 100, 100);
SetView3D (viewer32, 100, 100, 100, 0, 0, 0, 0);
SetPerspective3D (viewer32, 45, 1, 1, 1000);
SetViewerName3D (viewer33, "View Zoom");
SetViewport3D(viewer33, 230, 130, 100, 100);
SetPolarView3D (viewer33, 1, 1, 0, 20, 75, 45, 0);
SetPerspective3D (viewer33, 90, 1, 1, 1000);
SetViewerName3D (viewer34, "Ortho Project");
SetViewport3D(viewer34, 120, 130, 100, 100);
SetPolarView3D (viewer34, 1, 1, 0, 10, 45, 45, 0);
SetOrthogonal3D (viewer34, -10, 10, -10, 10, 1, 100);
SetViewerName3D (viewer35, "Depth Clipping");
SetViewport3D(viewer35, 10, 130, 100, 100);
SetPolarView3D (viewer35, 1, 1, 0, 20, 75, 45, 0);
SetPerspective3D (viewer35, 90, 1, 1, 80);
}
void RotateSpring (HDC hdc)
{
short i;
DisplayViewerFrame3D (hdc, viewer31, WVBLUE);
SetViewerName3D(viewer31, "3D Curve");
BeginDoubleBuffer3D (&hdc, viewer31);
SelectViewer3D (viewer31);
Scale3D (20, 20, 20);
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer3D (hdc, viewer31, WVGRAY);
PenColor (hdc, WVRED);
spring (hdc);
Translate3D (0.05, 0, 0);
Rotate3D (-6, 'y');
PushMatrix3D ();
PenColor (hdc, WVBLACK);
BrushColor (hdc, WVRED);
Rotate3D (6 * i, 'z');
Translate3D (0, 2, 0);
Rotate3D (3, 'y');
Tetrahedron (hdc, 1);
PushMatrix3D ();
BrushColor (hdc, WVGREEN);
Rotate3D (6, 'x');
Translate3D (0, 0, 2);
Rotate3D (3 * i, 'z');
Octahedron (hdc, 1);
PopMatrix3D ();
PopMatrix3D ();
UpdateBuffer3D (hdc, viewer31);
}
EndDoubleBuffer3D (&hdc, viewer31);
}
void RotateLogo (HDC hdc)
{
short i;
DisplayViewerFrame3D (hdc, viewer32, WVBLUE);
SelectViewer3D (viewer32);
BeginDoubleBuffer3D (&hdc, viewer32);
PenColor (hdc, WVBLUE);
Scale3D (30, 30, 30);
for ( i = 0; i < 5*demo_type; i++) {
ClearViewer3D (hdc, viewer32, WVGRAY);
logo (hdc);
Rotate3D (6, 'z');
UpdateBuffer3D (hdc, viewer32);
}
EndDoubleBuffer3D (&hdc, viewer32);
}
void RotateSurface (HDC hdc)
{
short i;
DisplayViewerFrame3D (hdc, viewer35, WVBLUE);
SetViewerName3D(viewer35, "NURBS Surface");
DisplayViewerName3D(hdc, viewer35, WVBLUE, 0);
BeginDoubleBuffer3D (&hdc, viewer35);
SelectViewer3D (viewer35);
Scale3D (2, 2, 2);
PenColor (hdc, WVMAGENTA);
for (i = 0; i < 5*demo_type; i++) {
ClearViewer3D (hdc, viewer35, WVGRAY);
NURBSSurface3D (hdc, surf, 4, 4, sknot, tknot, 6, 6);
Rotate3D (6, 'z');
Rotate3D (12, 'x');
Rotate3D (3, 'y');
UpdateBuffer3D (hdc, viewer35);
}
EndDoubleBuffer3D (&hdc, viewer35);
}
void RotateDodecahedron (HDC hdc)
{
short i;
DisplayViewerFrame3D (hdc, viewer33, WVRED);
SetViewerName3D(viewer33, "Dodecahedron");
DisplayViewerName3D(hdc, viewer33, WVBLUE, 0);
BeginDoubleBuffer3D (&hdc, viewer33);
SelectViewer3D (viewer33);
Scale3D (6, 6, 6);
BrushColor (hdc, WVBROWN);
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer3D (hdc, viewer33, WVGRAY);
Dodecahedron (hdc, 0.5);
Translate3D (0, 0.1, 0);
Rotate3D (6, 'z');
UpdateBuffer3D (hdc, viewer33);
}
EndDoubleBuffer3D (&hdc, viewer33);
}
void RotateIcosahedron (HDC hdc)
{
short i;
DisplayViewerFrame3D (hdc, viewer34, WVRED);
SetViewerName3D(viewer34, "Icosahedron");
DisplayViewerName3D(hdc, viewer34, WVBLUE, 0);
BeginDoubleBuffer3D (&hdc, viewer34);
SelectViewer3D (viewer34);
Scale3D (3, 3, 3);
BrushColor (hdc, WVYELLOW);
for (i = 0; i < 5*demo_type; i ++) {
ClearViewer3D (hdc, viewer34, WVGRAY);
Icosahedron (hdc, 1);
Rotate3D (3, 'y');
Translate3D (0.1, 0, 0);
Rotate3D (6, 'z');
UpdateBuffer3D (hdc, viewer34);
}
EndDoubleBuffer3D (&hdc, viewer34);
}
void Heart2D (HDC hdc)
{
DisplayViewerFrame2D (hdc, viewer21, WVRED);
SetViewerName2D(viewer21, "2D NURBS curve");
DisplayViewerName2D (hdc, viewer21, WVBLUE, 0);
SelectViewer2D (viewer21);
ClearViewer2D (hdc, viewer21, WVGRAY);
Scale2D (2, 2);
heart (hdc);
}
void Display (HDC hdc)
{
switch (demo_item) {
case 1:
Object2D (hdc);
break;
case 2:
ViewerMotion3D (hdc);
break;
case 3:
ObjectMotion3D (hdc);
break;
case 4:
ViewerZoom3D (hdc);
break;
case 5:
OrthoProject3D (hdc);
break;
case 6:
ViewerClip3D (hdc);
break;
case 7:
Heart2D (hdc);
break;
case 8:
RotateSpring (hdc);
break;
case 9:
RotateLogo (hdc);
break;
case 10:
RotateSurface (hdc);
break;
case 11:
RotateDodecahedron (hdc);
break;
case 12:
RotateIcosahedron (hdc);
break;
case 13:
Flag (hdc);
break;
default:
ViewerReset ();
demo_item = 0;
break;
}
}
void ProcessWindowPaint (HWND hwnd)
{
PAINTSTRUCT ps;
HDC hdc;
hdc = BeginPaint (hwnd, &ps);
if (demo_flag) {
Display (hdc);
if (demo_item == 12) {
InvalidateRect(hwnd, NULL, TRUE);
} else if (demo_item) {
InvalidateRect(hwnd, NULL, FALSE);
}
demo_item++;
}
EndPaint (hwnd, &ps);
}
void ProcessPrint (void)
{
HDC hPr;
short x1, y1, x2, y2;
GetViewport2D (viewer22, &x1, &y1, &x2, &y2);
hPr = GetPrinterDC ();
if (hPr != NULL) {
Escape (hPr, STARTDOC, 9, (LPSTR) "Graphics", 0L);
SetViewport2D (viewer22, 10, 10, 1920, 580);
SelectViewer2D (viewer22);
DisplayViewerFrame2D (hPr, viewer22, WVBLACK);
USFlag (hPr);
SetViewport2D (viewer22, x1, y1, x2, y2);
Escape (hPr, NEWFRAME, 0, 0L, 0L);
Escape (hPr, ENDDOC, 0, 0L, 0L);
DeleteDC(hPr);
}
}
/****************************************************************************
FUNCTION: MainWndProc(HWND, unsigned, WORD, LONG)
PURPOSE: Processes messages
MESSAGES:
WM_COMMAND - application menu (About dialog box)
WM_DESTROY - destroy window
COMMENTS:
To process the IDM_ABOUT message, call MakeProcInstance() to get the
current instance address of the About() function. Then call Dialog
box which will create the box according to the information in your
vlibdemo.rc file and turn control over to the About() function. When
it returns, free the intance address.
****************************************************************************/
long FAR PASCAL MainWndProc(hWnd, message, wParam, lParam)
HWND hWnd;
unsigned message;
WORD wParam;
LONG lParam;
{
FARPROC lpProcAbout;
switch (message) {
case WM_COMMAND:
switch (wParam) {
case IDM_EXIT:
ExitGraphics();
PostQuitMessage(0);
break;
case IDM_ABOUT:
lpProcAbout = MakeProcInstance (About, hInst);
DialogBox (hInst, "AboutBox", hWnd, lpProcAbout);
FreeProcInstance (lpProcAbout);
break;
case IDM_STOP:
demo_flag = 0;
break;
case IDM_CONTINUE:
demo_flag = demo_type;
if (demo_item == 1)
InvalidateRect(hWnd, NULL, TRUE);
else
InvalidateRect(hWnd, NULL, FALSE);
break;
case IDM_SHORT:
demo_type = 1;
break;
case IDM_LONG:
demo_type = 10;
break;
case IDM_PRINT:
ProcessPrint ();
break;
case IDM_HELP:
demo_flag = 0;
WinHelp(hWnd, "visualib.hlp", HELP_INDEX, 0);
break;
default:
return (DefWindowProc (hWnd, message, wParam, lParam));
}
break;
case WM_DESTROY:
ExitGraphics ();
PostQuitMessage (0);
break;
case WM_PAINT:
ProcessWindowPaint (hWnd);
break;
default:
return (DefWindowProc(hWnd, message, wParam, lParam));
}
return (NULL);
}
/****************************************************************************
FUNCTION: About (HWND, unsigned, WORD, LONG)
PURPOSE: Processes messages for "About" dialog box
MESSAGES:
WM_INITDIALOG - initialize dialog box
WM_COMMAND - Input received
COMMENTS:
No initialization is needed for this particular dialog box, but TRUE
must be returned to Windows.
Wait for user to click on "Ok" button, then close the dialog box.
****************************************************************************/
BOOL FAR PASCAL About (hDlg, message, wParam, lParam)
HWND hDlg;
unsigned message;
WORD wParam;
LONG lParam;
{
switch (message) {
case WM_INITDIALOG:
return (TRUE);
case WM_COMMAND:
if (wParam == IDOK || wParam == IDCANCEL) {
EndDialog (hDlg, TRUE);
return (TRUE);
}
break;
}
return (FALSE);
}