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mandelbrot_study
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Modified to compile against SDL 2.0

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master
José Carlos Cuevas 11 years ago
parent e5ee37a27d
commit 7c71af8aa1
4 changed files with 115 additions and 44 deletions
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6
Makefile
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@ -2,21 +2,21 @@
CC=gcc
# Flags!
SDLFLAGS=$(shell sdl-config --cflags)
SDLFLAGS=$(shell sdl2-config --cflags)
# Comment this line and uncomment the next to get debug symbols
CFLAGS=-c -Wall -O2 $(SDLFLAGS)
# CFLAGS=-c -Wall -ggdb $(SDLFLAGS)
# Libs!
SDLLIBS=$(shell sdl-config --libs) -lSDL_ttf
SDLLIBS=$(shell sdl2-config --libs) -lSDL2_ttf
OPENCLLIBS=-lOpenCL
LIBS=-lm -lpthread $(SDLLIBS)
# Includes!
INCLUDE=-I/usr/include/SDL -I./
INCLUDE=-I/usr/include/SDL2 -I./
all: mandelclassic clfract test clfractinteractive

88
interactive.c
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@ -15,19 +15,21 @@
#define MAX_SOURCE_SIZE (0x100000)
float map_x_mandelbrot(int x, int width, float zoom)
float map_x_mandelbrot(float x, int width, float zoom)
{
return (((float)x / (float)width) * (3.5 * zoom)) - 2.5;
// return (((float)x / (float)width) * (3.5 * zoom)) - 2.5;
return ((x / (float)width) * (3.5 * zoom));
}
float map_x_julia(int x, int width, float zoom)
float map_x_julia(float x, int width, float zoom)
{
return (((float)x / (float)width) * (3.5 * zoom)) - 1.75;
return ((x / (float)width) * (3.5 * zoom)) - 1.75;
}
float map_y(int y, int height, float zoom)
float map_y(float y, int height, float zoom)
{
return (((float)y / (float)height) * (2.0 * zoom)) - 1.0;
// return (((float)y / (float)height) * (2.0 * zoom)) - 1.0;
return ((y / (float)height) * (2.0 * zoom));
}
int main(int argn, char **argv) {
@ -55,12 +57,27 @@ int main(int argn, char **argv) {
printf("Julia mode activated...\n");
}
screen = SDL_SetVideoMode(res_x, res_y, 0, SDL_DOUBLEBUF);
if(!screen)
SDL_Window *window = SDL_CreateWindow("MandelClassic",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
res_x, res_y, 0);
SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);
if ((!window) || (!renderer))
fprintf(stderr,"Could not set video mode: %s\n",SDL_GetError());
// Set the title bar
SDL_WM_SetCaption("CLFract", "CLFract");
// Blank the window
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
SDL_Texture *texture_screen = SDL_CreateTexture(renderer,
SDL_PIXELFORMAT_ARGB8888,
SDL_TEXTUREACCESS_STREAMING,
res_x, res_y);
screen = SDL_CreateRGBSurface(0, res_x, res_y , 32, 0, 0, 0, 0);
//Initialize SDL_ttf
if( TTF_Init() == -1 )
@ -172,6 +189,8 @@ int main(int argn, char **argv) {
float stop_point;
float center_x = 2.5;
float center_y = 1.75;
float mouse_x = res_x / 2;
float mouse_y = res_y / 2;
if (julia_mode == 0)
stop_point = 0.00001;
@ -249,26 +268,26 @@ int main(int argn, char **argv) {
iteration = graph_line[line_count];
if ((iteration < 128) && (iteration > 0)) {
pixel[(current_line * res_x) + line_count] = SDL_MapRGBA(screen->format,
0,
20 + iteration,
0,
255);
0,
20 + iteration,
0,
255);
}
else if ((iteration >= 128) && (iteration < ITERATIONS))
{
pixel[(current_line * res_x) + line_count] = SDL_MapRGBA(screen->format,
iteration,
148,
iteration,
255);
iteration,
148,
iteration,
255);
}
else
{
pixel[(current_line * res_x) + line_count] = SDL_MapRGBA(screen->format,
0,
0,
0,
255);
0,
0,
0,
255);
}
}
}
@ -291,13 +310,10 @@ int main(int argn, char **argv) {
{
motion = -1;
}
mouse_x = ( (float) button.x - ((float) res_x / 2.0) ) / 10.0;
mouse_y = ( (float) button.y - ((float) res_y / 2.0) ) / 10.0;
if (julia_mode == 0)
center_x = map_x_mandelbrot(button.x, res_x, zoom);
else
center_x = map_x_julia(button.x, res_x, zoom);
center_y = map_y(button.y, res_y, zoom);
}
else if ( (ev.type == SDL_MOUSEBUTTONUP) )
{
@ -322,6 +338,16 @@ int main(int argn, char **argv) {
zoom += 0.01;
}
if (motion != 0)
{
if (julia_mode == 0)
center_x = map_x_mandelbrot(center_x + mouse_x, res_x, zoom);
else
center_x = map_x_julia(center_x + mouse_x, res_x, zoom);
center_y = map_y(center_y + mouse_y, res_y, zoom);
}
// Draw message on a corner...
char* msg = (char *)malloc(100 * sizeof(char));
sprintf(msg, "Zoom level: %0.3f", zoom * 100.0);
@ -332,8 +358,12 @@ int main(int argn, char **argv) {
free(message);
SDL_UpdateTexture(texture_screen, NULL, (Uint32*)screen->pixels, 800 * sizeof (Uint32));
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture_screen, NULL, NULL);
SDL_RenderPresent(renderer);
// Draw to the screen
SDL_Flip(screen);
// SDL_Flip(screen);
}
// Clean up

29
main.c
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@ -40,12 +40,27 @@ int main(int argn, char **argv) {
printf("Julia mode activated...\n");
}
screen = SDL_SetVideoMode(res_x, res_y, 0, SDL_DOUBLEBUF);
if(!screen)
SDL_Window *window = SDL_CreateWindow("CLFract",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
res_x, res_y, 0);
SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);
if ((!window) || (!renderer))
fprintf(stderr,"Could not set video mode: %s\n",SDL_GetError());
// Set the title bar
SDL_WM_SetCaption("CLFract", "CLFract");
// Blank the window
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
SDL_Texture *texture_screen = SDL_CreateTexture(renderer,
SDL_PIXELFORMAT_ARGB8888,
SDL_TEXTUREACCESS_STREAMING,
res_x, res_y);
screen = SDL_CreateRGBSurface(0, res_x, res_y , 32, 0, 0, 0, 0);
//Initialize SDL_ttf
if( TTF_Init() == -1 )
@ -255,8 +270,12 @@ int main(int argn, char **argv) {
free(message);
SDL_UpdateTexture(texture_screen, NULL, (Uint32*)screen->pixels, 800 * sizeof (Uint32));
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture_screen, NULL, NULL);
SDL_RenderPresent(renderer);
// Draw to the screen
SDL_Flip(screen);
// SDL_Flip(screen);
}
printf("Time elapsed %0.5f seconds\n", ((double)clock() - start) / CLOCKS_PER_SEC);

36
mandel_classic.c
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@ -314,11 +314,11 @@ int main(int argn, char **argv)
{
// Init SDL
if(SDL_Init(SDL_INIT_VIDEO) != 0)
fprintf(stderr, "Could not initialize SDL: %s\n", SDL_GetError());
fprintf(stderr, "Could not initialize SDL2: %s\n", SDL_GetError());
printf("SDL Initialized\n");
// Create screen surface
// Create screen texture
SDL_Surface *screen, *message;
int res_x = 800;
int res_y = 600;
@ -371,11 +371,28 @@ int main(int argn, char **argv)
#endif
// screen = SDL_SetVideoMode(res_x, res_y, 0, SDL_HWSURFACE|SDL_DOUBLEBUF);
screen = SDL_SetVideoMode(res_x, res_y, 0, SDL_DOUBLEBUF);
if(!screen)
// screen = SDL_SetVideoMode(res_x, res_y, 0, SDL_DOUBLEBUF);
SDL_Window *window = SDL_CreateWindow("MandelClassic",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
res_x, res_y, 0);
SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);
if ((!window) || (!renderer))
fprintf(stderr,"Could not set video mode: %s\n",SDL_GetError());
// Set the title bar
SDL_WM_SetCaption("CLFract", "CLFract");
// Blank the window
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
SDL_Texture *texture_screen = SDL_CreateTexture(renderer,
SDL_PIXELFORMAT_ARGB8888,
SDL_TEXTUREACCESS_STREAMING,
res_x, res_y);
screen = SDL_CreateRGBSurface(0, res_x, res_y , 32, 0, 0, 0, 0);
//Initialize SDL_ttf
if( TTF_Init() == -1 )
@ -501,7 +518,12 @@ int main(int argn, char **argv)
free(message);
SDL_Flip(screen);
SDL_UpdateTexture(texture_screen, NULL, (Uint32*)screen->pixels, 800 * sizeof (Uint32));
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture_screen, NULL, NULL);
SDL_RenderPresent(renderer);
// SDL_Flip(screen);
}
printf("Time elapsed %0.5f seconds\n", ((double)clock() - start) / CLOCKS_PER_SEC);

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