ReactOS 0.4.15-dev-7677-g8209aa5
butterflies.c
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1#include <windows.h>
2#include <scrnsave.h>
3#include <tchar.h>
4#include <math.h>
5#include <stdio.h>
6#include <stdlib.h>
7#include <GL/gl.h>
8#include <GL/glu.h>
9#include <GL/glext.h>
10#include "resource.h"
11
12HINSTANCE hInstance; // Holds The Instance Of The Application
13
14GLuint texture[3]; //stores texture objects and display list
16
17LPCTSTR registryPath = _T("Software\\Microsoft\\ScreenSavers\\Butterflies");
19
20
21struct object // Create A Structure Called Object
22{
23 int tex; // Integer Used To Select Our Texture
24 float x; // X Position
25 float y; // Y Position
26 float z; // Z Position
27 float yi; // Y Increase Speed (Fall Speed)
28 float spinz; // Z Axis Spin
29 float spinzi; // Z Axis Spin Speed
30 float flap; // Flapping Triangles :)
31 float fi; // Flap Direction (Increase Value)
32};
33
34struct object obj[50];
35//object obj[50]; // Create 50 Objects Using The Object Structure
36
38{
39 dRotate = TRUE;
40}
41
44 HKEY skey;
45 DWORD valtype, valsize, val;
46
48
51 return;
52
53 valsize=sizeof(val);
54
55 result = RegQueryValueEx(skey, _T("Rotate"), 0, &valtype, (LPBYTE)&val, &valsize);
57 dRotate = val;
58 RegCloseKey(skey);
59}
60
63 HKEY skey;
64 DWORD val, disp;
65
68 return;
69
70 val = dRotate;
71 RegSetValueEx(skey, _T("Rotate"), 0, REG_DWORD, (CONST BYTE*)&val, sizeof(val));
72
73 RegCloseKey(skey);
74}
75
76void SetObject(int loop) // Sets The Initial Value Of Each Object (Random)
77{
78 obj[loop].tex=rand()%3; // Texture Can Be One Of 3 Textures
79 obj[loop].x=rand()%34-17.0f; // Random x Value From -17.0f To 17.0f
80 obj[loop].y=18.0f; // Set y Position To 18 (Off Top Of Screen)
81 obj[loop].z=-((rand()%30000/1000.0f)+10.0f); // z Is A Random Value From -10.0f To -40.0f
82 obj[loop].spinzi=(rand()%10000)/5000.0f-1.0f; // spinzi Is A Random Value From -1.0f To 1.0f
83 obj[loop].flap=0.0f; // flap Starts Off At 0.0f;
84 obj[loop].fi=0.05f+(rand()%100)/1000.0f; // fi Is A Random Value From 0.05f To 0.15f
85 obj[loop].yi=0.001f+(rand()%1000)/10000.0f; // yi Is A Random Value From 0.001f To 0.101f
86}
87
88void LoadGLTextures() // Creates Textures From Bitmaps In The Resource File
89{
90 HBITMAP hBMP; // Handle Of The Bitmap
91 BITMAP BMP; // Bitmap Structure
92 int loop;
93
94 // The ID Of The 3 Bitmap Images We Want To Load From The Resource File
95 byte Texture[]={ IDB_BUTTERFLY1, IDB_BUTTERFLY2, IDB_BUTTERFLY3 };
96
97 glGenTextures(sizeof(Texture), &texture[0]); // Generate 3 Textures (sizeof(Texture)=3 ID's)
98 for (loop=0; loop<sizeof(Texture); loop++) // Loop Through All The ID's (Bitmap Images)
99 {
101 if (hBMP) // Does The Bitmap Exist?
102 { // If So...
103 GetObject(hBMP,sizeof(BMP), &BMP); // Get The Object
104 // hBMP: Handle To Graphics Object
105 // sizeof(BMP): Size Of Buffer For Object Information
106 // Buffer For Object Information
107 glPixelStorei(GL_UNPACK_ALIGNMENT,4); // Pixel Storage Mode (Word Alignment / 4 Bytes)
108 glBindTexture(GL_TEXTURE_2D, texture[loop]); // Bind Our Texture
111
112 // Generate Mipmapped Texture (3 Bytes, Width, Height And Data From The BMP)
113 gluBuild2DMipmaps(GL_TEXTURE_2D, 3, BMP.bmWidth, BMP.bmHeight, GL_BGR_EXT, GL_UNSIGNED_BYTE, BMP.bmBits);
114 }
115 }
116}
117
119{
120 HDC hDC = GetDC(hWnd);
121 HGLRC hRC = 0;
123 int nFormat;
124
126
128 pfd.nVersion = 1;
130 pfd.cColorBits = 24;
131 pfd.cDepthBits = 24;
132
133 nFormat = ChoosePixelFormat(hDC, &pfd);
135 SetPixelFormat(hDC, nFormat, &pfd);
136
139
140 hdcOpenGL = hDC;
141
142 return hRC;
143}
144
146{
147 int loop;
148
149 if (height==0) // Prevent A Divide By Zero By
150 {
151 height=1; // Making Height Equal One
152 }
153
154 glViewport(0,0,width,height); // Reset The Current Viewport
155
156 glMatrixMode(GL_PROJECTION); // Select The Projection Matrix
157 glLoadIdentity(); // Reset The Projection Matrix
158
159 // Calculate The Aspect Ratio Of The Window
160 gluPerspective (45.0f, (GLfloat)(width)/(GLfloat)(height),1.0f, 1000.0f);
161
162 glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
164 // Start Of User Initialization
165 LoadGLTextures(); // Load The Textures From Our Resource File
166
167 glClearColor (0.0f, 0.0f, 0.0f, 0.5f); // Black Background
168 glClearDepth (1.0f); // Depth Buffer Setup
169 glDepthFunc (GL_LEQUAL); // The Type Of Depth Testing (Less Or Equal)
170 glDisable(GL_DEPTH_TEST); // Disable Depth Testing
171 glShadeModel (GL_SMOOTH); // Select Smooth Shading
172 glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Set Perspective Calculations To Most Accurate
173 glEnable(GL_TEXTURE_2D); // Enable Texture Mapping
174 glBlendFunc(GL_ONE,GL_SRC_ALPHA); // Set Blending Mode (Cheap / Quick)
176
177
178 for (loop=0; loop<50; loop++) // Loop To Initialize 50 Objects
179 {
180 SetObject(loop); // Call SetObject To Assign New Random Values
181 }
182
183}
184
186{
187 int loop;
188 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
189
190 for (loop=0; loop<50; loop++) // Loop Of 50 (Draw 50 Objects)
191 {
192 glLoadIdentity (); // Reset The Modelview Matrix
193 glBindTexture(GL_TEXTURE_2D, texture[obj[loop].tex]); // Bind Our Texture
194 glTranslatef(obj[loop].x,obj[loop].y,obj[loop].z); // Position The Object
195 glRotatef(45.0f,1.0f,0.0f,0.0f); // Rotate On The X-Axis
196 if (dRotate)
197 {
198 glRotatef((obj[loop].spinz),0.0f,0.0f,1.0f); // Spin On The Z-Axis
199 }
200 glBegin(GL_TRIANGLES); // Begin Drawing Triangles
201 // First Triangle _____
202 glTexCoord2f(1.0f,1.0f); glVertex3f( 1.0f, 1.0f, 0.0f); // (2)| / (1)
203 glTexCoord2f(0.0f,1.0f); glVertex3f(-1.0f, 1.0f, obj[loop].flap); // | /
204 glTexCoord2f(0.0f,0.0f); glVertex3f(-1.0f,-1.0f, 0.0f); // (3)|/
205
206 // Second Triangle
207 glTexCoord2f(1.0f,1.0f); glVertex3f( 1.0f, 1.0f, 0.0f); // /|(1)
208 glTexCoord2f(0.0f,0.0f); glVertex3f(-1.0f,-1.0f, 0.0f); // / |
209 glTexCoord2f(1.0f,0.0f); glVertex3f( 1.0f,-1.0f, obj[loop].flap); // (2)/____|(3)
210
211 glEnd(); // Done Drawing Triangles
212
213 obj[loop].y-=obj[loop].yi; // Move Object Down The Screen
214 obj[loop].spinz+=obj[loop].spinzi; // Increase Z Rotation By spinzi
215 obj[loop].flap+=obj[loop].fi; // Increase flap Value By fi
216
217 if (obj[loop].y<-18.0f) // Is Object Off The Screen?
218 {
219 SetObject(loop); // If So, Reassign New Values
220 }
221
222 if ((obj[loop].flap>1.0f) || (obj[loop].flap<-1.0f)) // Time To Change Flap Direction?
223 {
224 obj[loop].fi=-obj[loop].fi; // Change Direction By Making fi = -fi
225 }
226 }
227
228 Sleep(15); // Create A Short Delay (15 Milliseconds)
229
230 glFlush ();
231
232}
233
235
236 switch(msg){
238 if(((HWND)lpm == GetDlgItem(hdlg, WEBPAGE1)) || ((HWND)lpm == GetDlgItem(hdlg, WEBPAGE2)))
239 {
240 SetTextColor((HDC)wpm, RGB(0,0,255));
243 }
244 break;
245 case WM_COMMAND:
246 switch(LOWORD(wpm)){
247 case IDOK:
248 EndDialog(hdlg, LOWORD(wpm));
249 break;
250 case WEBPAGE1:
251 ShellExecute(NULL, _T("open"), _T("http://nehe.gamedev.net"), NULL, NULL, SW_SHOWNORMAL);
252 break;
253 case WEBPAGE2:
254 ShellExecute(NULL, _T("open"), _T("http://www.thaputer.com"), NULL, NULL, SW_SHOWNORMAL);
255 break;
256 }
257 }
258 return FALSE;
259}
260
263{
264 static HGLRC hRC;
265 static DWORD timer = 1;
266 HDC hDC;
267 RECT WindowRect;
268 int width;
269 int height;
270
271 switch (message)
272 {
273 case WM_CREATE:
274 ReadRegistry();
276 GetClientRect (hWnd, &WindowRect);
277 width = WindowRect.right - WindowRect.left;
278 height = WindowRect.bottom - WindowRect.top;
280 SetTimer(hWnd, timer, 5, NULL);
281 break;
282 case WM_TIMER:
283 hDC = GetDC(hWnd);
284 Display();
287 break;
288 case WM_DESTROY:
292 break;
293 }
294
296}
297
300{
301 switch (message)
302 {
303 case WM_INITDIALOG:
304 ReadRegistry();
306 return TRUE;
307 case WM_COMMAND:
308 switch (LOWORD(wParam))
309 {
310 case IDOK:
313 EndDialog(hDlg, TRUE);
314 return TRUE;
315 case IDCANCEL:
316 EndDialog(hDlg, TRUE);
317 break;
318 case IDABOUT:
320 break;
321 }
322 }
323
324 return FALSE;
325}
326
328{
329 return TRUE;
330}
331
static HDC hDC
Definition: 3dtext.c:33
static HGLRC hRC
Definition: 3dtext.c:32
#define msg(x)
Definition: auth_time.c:54
HWND hWnd
Definition: settings.c:17
#define RegCloseKey(hKey)
Definition: registry.h:49
void LoadGLTextures()
Definition: butterflies.c:88
LPCTSTR registryPath
Definition: butterflies.c:17
void SetObject(int loop)
Definition: butterflies.c:76
LRESULT WINAPI ScreenSaverProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
Definition: butterflies.c:261
HGLRC InitOGLWindow(HWND hWnd)
Definition: butterflies.c:118
void Display()
Definition: butterflies.c:185
HINSTANCE hInstance
Definition: butterflies.c:12
void SetDefaults()
Definition: butterflies.c:37
BOOL WINAPI ScreenSaverConfigureDialog(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
Definition: butterflies.c:298
void InitOpenGL(GLsizei width, GLsizei height)
Definition: butterflies.c:145
INT_PTR CALLBACK AboutProc(HWND hdlg, UINT msg, WPARAM wpm, LPARAM lpm)
Definition: butterflies.c:234
HDC hdcOpenGL
Definition: butterflies.c:15
void ReadRegistry()
Definition: butterflies.c:42
BOOL WINAPI RegisterDialogClasses(HANDLE hInst)
Definition: butterflies.c:327
void WriteRegistry()
Definition: butterflies.c:61
BOOL dRotate
Definition: butterflies.c:18
WPARAM wParam
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LPARAM lParam
Definition: combotst.c:139
#define ERROR_SUCCESS
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#define NULL
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Definition: types.h:120
#define FALSE
Definition: types.h:117
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@ BMP
Definition: image.c:4272
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unsigned int BOOL
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unsigned long DWORD
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GLAPI void GLAPIENTRY glClearDepth(GLclampd depth)
GLAPI void GLAPIENTRY glTranslatef(GLfloat x, GLfloat y, GLfloat z)
GLAPI void GLAPIENTRY glTexCoord2f(GLfloat s, GLfloat t)
#define GL_NICEST
Definition: gl.h:585
#define GL_TEXTURE_MIN_FILTER
Definition: gl.h:649
GLAPI void GLAPIENTRY glDepthFunc(GLenum func)
GLAPI void GLAPIENTRY glEnable(GLenum cap)
float GLfloat
Definition: gl.h:161
GLAPI void GLAPIENTRY glHint(GLenum target, GLenum mode)
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
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Definition: gl.h:301
#define GL_LINEAR
Definition: gl.h:421
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Definition: gl.h:378
#define GL_SMOOTH
Definition: gl.h:339
#define GL_TRIANGLES
Definition: gl.h:194
GLAPI void GLAPIENTRY glLoadIdentity(void)
unsigned int GLuint
Definition: gl.h:159
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Definition: gl.h:670
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Definition: gl.h:178
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Definition: gl.h:246
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Definition: gl.h:296
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Definition: gl.h:245
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Definition: gl.h:632
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Definition: gl.h:716
GLAPI void GLAPIENTRY glBegin(GLenum mode)
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Definition: gl.h:371
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Definition: gl.h:375
GLint GLint GLsizei GLsizei height
Definition: gl.h:1546
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int GLsizei
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Definition: gl.h:648
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Definition: gl.h:645
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Definition: gl.h:578
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Definition: gl.h:710
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GLAPI void GLAPIENTRY glShadeModel(GLenum mode)
GLAPI void GLAPIENTRY glClearColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)
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GLAPI void GLAPIENTRY glClear(GLbitfield mask)
GLenum GLuint texture
Definition: glext.h:6295
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GLuint GLfloat * val
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Definition: glu_mangle.h:35
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#define IDB_BUTTERFLY3
Definition: resource.h:9
#define WEBPAGE1
Definition: resource.h:13
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Definition: resource.h:11
#define IDABOUT
Definition: resource.h:5
#define WEBPAGE2
Definition: resource.h:14
#define IDB_BUTTERFLY1
Definition: resource.h:7
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long LONG
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Definition: tftpd.h:60
int tex
Definition: butterflies.c:23
float y
Definition: butterflies.c:25
float flap
Definition: butterflies.c:30
float yi
Definition: butterflies.c:27
float spinz
Definition: butterflies.c:28
float spinzi
Definition: butterflies.c:29
float x
Definition: butterflies.c:24
float fi
Definition: butterflies.c:31
float z
Definition: butterflies.c:26
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struct tagPIXELFORMATDESCRIPTOR PIXELFORMATDESCRIPTOR
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