int graphics_worker_thread(graphics_worker_arg *arg){
graphics_state *state = arg->state;
int x0 = state->worker_pixel_ranges[4*arg->i];
int y0 = state->worker_pixel_ranges[4*arg->i + 1];
int x1 = state->worker_pixel_ranges[4*arg->i + 2];
int y1 = state->worker_pixel_ranges[4*arg->i + 3];
/* raytrace */
while(1){
SDL_SemWait(state->sema_start_render);
int x, y;
for(y = y0; y < y1; y++)
{
int ytimesw = y * state->width;
for(x = x0; x < x1; x++)
{
if(!state->stencil[x + ytimesw]){
set_pixel(state, x, ytimesw, 0, 0, 0);
continue;
}
f3 color = graphics_render_pixel(state, x, y);
set_pixel(state, x, ytimesw,
(Uint8)(color.x*255.9f),
(Uint8)(color.y*255.9f),
(Uint8)(color.z*255.9f));
}
}
/* let the main thread know we're done rendering */
SDL_SemPost(state->sema_finish_render);
}
return 0;
}
void PixelMap::load(const Image &image)
{
clear();
size = image.getSize();
map = new u8*[size.getHeight()];
for(int y = 0; y < size.getHeight(); y++)
{
int linelength;
linelength = size.getWidth()%8 == 0 ? size.getWidth()/8 : size.getWidth()/8 + 1;
map[y] = new u8[linelength];
memset(map[y], 0, sizeof(*map[y]) * linelength);
for(int x = 0; x < size.getWidth(); x++)
{
if(!image.hasColorkey())
set_pixel(x, y, 1);
else if(image.getPixel(IntPoint(x, y)) != image.getColorkey())
set_pixel(x, y, 1);
}
}
}
void draw_line(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2) {
if (x1 == x2) {
// Draw vertical line
for (int i = y1; (y2 > y1) ? i <= y2 : i >= y2; (y2 > y1) ? i++ : i-- ) {
set_pixel(x1, i, 1);
}
} else if (y1 == y2) {
// Draw horizontal line
for (int i = x1; (x2 > x1) ? i <= x2 : i >= x2; (x2 > x1) ? i++ : i-- ) {
set_pixel(i, y1, 1);
}
} else {
// Get Bresenhaming...
float dx = x2-x1;
float dy = y2-y1;
float err = 0.0;
float derr = ABS(dy/dx);
for (int x = x1, y = y1; (dx > 0) ? x<=x2 : x>=x2; (dx > 0) ? x++ : x--) {
set_pixel(x, y, 1);
err += derr;
while (err >= 0.5 && ((dy > 0) ? y<=y2 : y>=y2) ) {
set_pixel(x, y, 1);
y += (dy > 0) - (dy < 0);
err -= 1.0;
}
}
}
}
int main(int argc, char* argv[])
{
create_image_world();
int image = create_image(100, 100);
for(int x = 0; x < 100; x++)
{
for(int y = 0; y < 100; y++)
{
if (x == y)
{
set_pixel(image, x, y, 255, 0, 0, 255);
}
else if (x+y == 100)
{
set_pixel(image, x, y, 255, 255, 0, 0);
}
else
{
set_pixel(image, x, y, 255, 0, 255, 0);
}
}
}
put_image(image, get_screen_width()/2-get_image_width(image)/2, get_screen_height()/2-get_image_height(image)/2);
return p1world_shutdown();
}
void generic_expand_bitmap(u32 x, u32 y, u32 width, u32 height, const u8 *data,
u32 pitch, pixel_t pixel0, pixel_t pixel1)
{
u32 w, x0;
const u8 *data0;
int i;
u8 bits;
while (height--) {
w = width;
x0 = x;
data0 = data;
while (w > 7) {
bits = *data0++;
for (i = 0; i < 8; i++, bits <<= 1)
set_pixel(x0++, y, bits & 0x80 ? pixel1 : pixel0);
w -= 8;
}
if (w > 0) {
bits = *data0++;
while (w-- > 0) {
set_pixel(x0++, y, bits & 0x80 ? pixel1 : pixel0);
bits <<= 1;
}
}
y++;
data += pitch;
}
}
void draw_box(unsigned char box_num, unsigned char draw_open) {
// Figure out box information
unsigned char c_x, c_y, min_x, max_x, min_y, max_y;
c_x = LCD_X * (box_num%BOXES_W + 0.5f) / ((float) BOXES_W);
c_y = LCD_Y * (box_num/BOXES_W + 0.5f) / ((float) BOXES_H);
min_x = c_x-BOX_RADIUS;
max_x = c_x+BOX_RADIUS;
min_y = c_y-BOX_RADIUS;
max_y = c_y+BOX_RADIUS;
// Draw the open or closed box
if (draw_open) {
// Draw the outlined box
for (unsigned char x=min_x; x<=max_x; x++) {
for (unsigned char y=min_y; y<=max_y; y++) {
set_pixel(x, y, (x==min_x || x==max_x || y==min_y || y==max_y) ? 1 : 0);
}
}
// Draw the character
draw_char(c_x-2, c_y-3, (is_gold[box_num]) ? '$' : 'X');
} else {
// Draw the filled box
for (unsigned char x=min_x; x<=max_x; x++) {
for (unsigned char y=min_y; y<=max_y; y++) {
set_pixel(x, y, 1);
}
}
}
}
void generic_copy_rect(u32 dx, u32 dy, u32 width, u32 height, u32 sx, u32 sy)
{
u32 w, dx0, sx0;
if (dy > sy || (dy == sy && dx > sx)) {
dx += width;
dy += height;
sx += width;
sy += height;
while (height--) {
dy--;
sy--;
for (w = width, dx0 = dx, sx0 = sx; w > 0; w--) {
dx0--;
sx0--;
set_pixel(dx0, dy, get_pixel(sx0, sy));
}
}
} else {
while (height--) {
for (w = width, dx0 = dx, sx0 = sx; w > 0; w--) {
set_pixel(dx0, dy, get_pixel(sx0, sy));
dx0++;
sx0++;
}
dy++;
sy++;
}
}
}
void draw_label(image a, int r, int c, image label, image prob_label, const float *rgb)
{
float ratio = (float) label.w / label.h;
int h = label.h;
int w = ratio * h;
image rl = resize_image(label, w, h);
if (r - h >= 0) r = r - h;
float ratiop = (float) prob_label.w / prob_label.h;
int hp = prob_label.h;
int wp = ratiop * hp;
image rpl = resize_image(prob_label, wp, hp);
int i, j, k;
for(j = 0; j < h && j + r < a.h; ++j){
for(i = 0; i < w && i + c < a.w; ++i){
for(k = 0; k < label.c; ++k){
float val = get_pixel(rl, i, j, k);
set_pixel(a, i+c+50, j+r, k, rgb[k] * val);
}
}
}
for(j = 0; j < hp && j + r < a.h; ++j){
for(i = 0; i < wp && i + c < a.w; ++i){
for(k = 0; k < prob_label.c; ++k){
float val = get_pixel(rpl, i, j, k);
set_pixel(a, i+c, j+r, k, rgb[k] * val);
}
}
}
free_image(rl);
free_image(rpl);
}
// http://www.cs.rit.edu/~ncs/color/t_convert.html
void rgb_to_hsv(image im)
{
assert(im.c == 3);
int i, j;
float r, g, b;
float h, s, v;
for(j = 0; j < im.h; ++j){
for(i = 0; i < im.w; ++i){
r = get_pixel(im, i , j, 0);
g = get_pixel(im, i , j, 1);
b = get_pixel(im, i , j, 2);
float max = three_way_max(r,g,b);
float min = three_way_min(r,g,b);
float delta = max - min;
v = max;
if(max == 0){
s = 0;
h = -1;
}else{
s = delta/max;
if(r == max){
h = (g - b) / delta;
} else if (g == max) {
h = 2 + (b - r) / delta;
} else {
h = 4 + (r - g) / delta;
}
if (h < 0) h += 6;
}
set_pixel(im, i, j, 0, h);
set_pixel(im, i, j, 1, s);
set_pixel(im, i, j, 2, v);
}
}
}
void game_of_life() {
int x;
int y;
for (x = 0; x < SW_VGA_WIDTH; ++x) {
for (y = 0; y < SW_VGA_HEIGHT; ++y) {
int n = neighbors(old_img_addr, x, y);
/* if is alive */
if (get_pixel(old_img_addr, x, y)) {
/* underpopulation or overcrowding: die */
if ((n < 2) || (n > 3)) {
set_pixel(new_img_addr, x, y, 0);
} else {
set_pixel(new_img_addr, x, y, 1);
}
} else {
/* perfect conditions: become alive */
if (n == 3) {
set_pixel(new_img_addr, x, y, 1);
} else {
set_pixel(new_img_addr, x, y, 0);
}
}
}
}
}
void generic_draw_line(u32 x1, u32 y1, u32 x2, u32 y2, pixel_t pixel)
{
int dx, dy, sx, sy, e;
dx = x2-x1;
dy = y2-y1;
if (dy == 0) {
if (dx < 0) {
dx = -dx;
x1 = x2;
}
draw_hline(x1, y1, dx+1, pixel);
} else if (dx == 0) {
if (dy < 0) {
dy = -dy;
y1 = y2;
}
draw_vline(x1, y1, dy+1, pixel);
} else {
if (dy < 0) {
dy = -dy;
sy = -1;
} else {
sy = 1;
}
if (dx < 0) {
dx = -dx;
sx = -1;
} else {
sx = 1;
}
if (dx > dy) {
e = -dx/2;
set_pixel(x1, y1, pixel);
while (x1 != x2) {
e += dy;
if (e >= 0) {
y1 += sy;
e -= dx;
}
x1 += sx;
set_pixel(x1, y1, pixel);
}
} else {
e = -dy/2;
set_pixel(x1, y1, pixel);
while (y1 != y2) {
e += dx;
if (e >= 0) {
x1 += sx;
e -= dy;
}
y1 += sy;
set_pixel(x1, y1, pixel);
}
}
}
}
static void fill_circle_points_x(u32 cx, u32 cy, u32 x, u32 y, pixel_t pixel)
{
if (x == 0) {
set_pixel(cx, cy-y, pixel);
set_pixel(cx, cy+y, pixel);
} else {
draw_hline(cx-x, cy-y, 2*x+1, pixel);
draw_hline(cx-x, cy+y, 2*x+1, pixel);
}
}
static void fill_ellipse_points(u32 cx, u32 cy, u32 x, u32 y, pixel_t pixel)
{
if (x == 0) {
set_pixel(cx, cy-y, pixel);
set_pixel(cx, cy+y, pixel);
} else if (y == 0) {
draw_hline(cx-x, cy, 2*x+1, pixel);
} else {
draw_hline(cx-x, cy-y, 2*x+1, pixel);
draw_hline(cx-x, cy+y, 2*x+1, pixel);
}
}
void UnaryCompositeLayer<Dtype>::Forward_cpu(const vector<Blob<Dtype>*>& bottom,
const vector<Blob<Dtype>*>& top)
{
top[0]->CopyFrom(*bottom[0], false);// data is copied
Dtype user_interaction_potential = this->layer_param_.multi_stage_crf_param().user_interaction_potential();
Dtype dis_mean = this->layer_param_.multi_stage_crf_param().interaction_dis_mean();
Dtype dis_std = this->layer_param_.multi_stage_crf_param().interaction_dis_std();
Dtype dis_cv = dis_mean/dis_std;
const Dtype * bottom_data = bottom[0]->cpu_data();
const Dtype * image_data = bottom[1]->cpu_data();
Dtype * top_data = top[0]->mutable_cpu_data();
Dtype * mask_data = top[1]->mutable_cpu_data();
int scribble_point = 0;
for(int n=0; n<num_; n++)
{
for(int h=0; h<height_; h++)
{
for(int w=0; w<width_; w++)
{
int scribble_channel = -1;
for(int c = 0; c<unary_channels_; c++)
{
int ci = image_channels_-unary_channels_ + c;
Dtype d = get_pixel(image_data, num_, image_channels_, height_, width_,
n, ci, h, w);
if((d + dis_cv) < 1e-5 && (d + dis_cv) > -1e-5)
{
scribble_channel = c;
scribble_point++;
break;
}
}
Dtype mask_value = (scribble_channel>-1)? 1.0 : 0.0;
set_pixel(mask_data, num_, 1, height_, width_, n, 0, h, w, mask_value);
if(scribble_channel > -1)
{
for (int c = 0; c<unary_channels_; c++)
{
Dtype u_value = 0;//get_pixel(bottom_data, num_, unary_channels_, height_, width_,n, c, h, w);
u_value = (c == scribble_channel)? u_value + user_interaction_potential :
u_value - user_interaction_potential;
set_pixel(top_data, num_, unary_channels_, height_, width_, n, c, h, w, u_value);
}
}
} //for w
} // for h
} // for n
LOG(INFO)<<"scribble point: "<<scribble_point;
}
void draw_circle(SDL_Surface *surface, int cx, int cy, int radius, Uint32 pixel) {
double r = (double)radius;
for(double dy = 1; dy <= r; dy += 1.0) {
double dx = floor(sqrt((2.0 * r * dy) - (dy * dy)));
int x = cx - dx;
for(; x <= cx + dx; x++) {
set_pixel(surface, x, ((int)(cy + r - dy)), pixel);
set_pixel(surface, x, ((int)(cy - r + dy)), pixel);
}
}
}
void draw_world(world* game_world, screen* out) {
for (int i = 0; i < game_world->height; i++) {
for (int j = 0; j < game_world->width; j++) {
set_pixel(i, j, '0', out);
}
}
for (int i = 0; i < game_world->num_walls; i++) {
point wall = game_world->walls[i];
set_pixel(wall.y, wall.x, '1', out);
}
draw_player(game_world->game_player, out);
draw_collectible(game_world->pellet, out);
}
void flush(){
for (uint8_t x = 0; x < MATRIX_WIDTH; x++){
for (uint8_t y = 0; y < MATRIX_HEIGHT; y++){
set_pixel(x, y, scratch_buffer[x][y], OVERLAY_REPLACE);
}
}
}
static void set_pixel_range(uint8_t buf[], int row, int start, int end)
{
int i;
for (i = start; i <= end; i++)
set_pixel(buf, row, i);
}
void Image2DGrey::load_PGM(const std::string &filename)
{
std::ifstream file(filename.c_str(), std::ios::in);
std::string magic_number, line;
getline(file,magic_number);
while(file.peek() == '#' && !file.eof())
{
getline( file, line);
}
int width, height;
file >> width >> height ;
resize(width, height);
int max;
file >> max;
for (int y=0;y<get_height();y++)
{
for (int x=0;x<get_width();x++)
{
int pixel;
file >> pixel;
set_pixel(x,y, pixel * 255 / max);
}
}
file.close();
}
void draw_sprite_scaled(Sprite *sprt, char *base, int width, int height)
{
char *dSprt = sprt->map;
char* bgMap = sprt->bgmap;
sprt->on_screen = true;
if(bgMap)
{
bgMap = realloc(bgMap, width * height);
sprt->bgmap = bgMap;
}
double dx = (double)sprt->width / width;
double dy = (double)sprt->height / height;
int i,k;
for(i = 0; i < height; i++)
for(k = 0; k < width; k++)
{
if(bgMap) *(bgMap + width*i + k) = get_pixel(sprt->x+k, sprt->y+i, base); //guarda o valor antigo
int map_x = dx*k + 0.5;
int map_y = dy*i + 0.5;
int color = *(dSprt + sprt->width*map_y + map_x);
if(color != 0) set_pixel(sprt->x+k,sprt->y+i, color, base); //actualiza com o valor mapeado
}
}
void PerlinNoise::operator()(SDL_Surface * s)
{
SDL_FillRect(s, NULL, 0);
int r = rand() % 256;
int g = rand() % 256;
int b = rand() % 256;
for(int x=0; x<s->w; x++)
for(int y=0; y<s->h; y++)
{
float t = Perlin( (int)x, (int)y );
int value = 128 + 128*t;
clamp(0, value, 255);
//std::cout << value << std::endl;
Color c;
c.r = r;
c.g = g;
c.b = b;
c.a = value;
set_pixel(s, x, y, c);
}
}
/**
* Draw character on screen
*
* @param character character to draw
* @param x character x coordinate
* @param y character y coordinate
*/
void draw_character(char character, int x, int y) {
// Get the font binary address by run objdump -t build/font.o
unsigned char *font_addr = (unsigned char *)&_binary_font_font_bin_start;
int row;
unsigned int bits, bit;
if (character > 127) {
return;
}
// Each character cost 16 bytes in font.bin
font_addr += CHARACTER_SIZE * character;
for (row = 0; row < CHARACTER_HEIGHT; row += 1) {
bits = (unsigned int)peek_b((MEM_ADDR)(font_addr + row));
bit = CHARACTER_WIDTH;
do {
bits = bits << 1;
bit -= 1;
if ((bits & 0x100) != 0) {
set_pixel(x + bit, y);
} else {
clear_pixel(x + bit, y);
}
} while (bit != 0);
y += 1;
}
}
void PixelMap::setPixel(const IntPoint &pixel, bool is)
{
if(pixel.getX() >= size.getWidth() || pixel.getY() >= size.getHeight() || pixel.getX() < 0 || pixel.getY() < 0)
return;
set_pixel(pixel.getX(), pixel.getY(), is);
}
void PixelMap::load(const PixelMap &pixelmap)
{
if(&pixelmap == this)
return;
clear();
size = pixelmap.size;
if(pixelmap.map != NULL)
{
map = new u8*[size.getHeight()];
for(int y = 0; y < size.getHeight(); y++)
{
int linelength;
linelength = size.getWidth()%8 == 0 ? size.getWidth()/8 : size.getWidth()/8 + 1;
map[y] = new u8[linelength];
memset(map[y], 0, sizeof(*map[y]) * linelength);
for(int x = 0; x < size.getWidth(); x++)
{
if(is_pixel_on_map(pixelmap.map, x, y))
set_pixel(x, y, 1);
}
}
}
}
static IplImage* do_scale(IplImage* im, int s)
{
/* image pixel binning */
/* s the scaling factor */
IplImage* scale_im = NULL;
CvSize scale_size;
int x;
int y;
int i;
int j;
unsigned char rgb[3];
scale_size.width = im->width * s;
scale_size.height = im->height * s;
scale_im = cvCreateImage(scale_size, IPL_DEPTH_8U, 3);
for (y = 0; y < im->height; ++y)
{
for (x = 0; x < im->width; ++x)
{
get_pixel(im, x, y, rgb);
for (i = 0; i < s; ++i)
for (j = 0; j < s; ++j)
set_pixel(scale_im, x * s + i, y * s + j, rgb);
}
}
return scale_im;
}
void blit_pixelarrays(t_bunny_pixelarray *background,
t_bunny_pixelarray *buffer,
t_bunny_position *pos)
{
int x;
int y;
y = pos->y;
while (y < (pos->y + buffer->clipable.clip_height))
{
x = pos->x;
while (x < (pos->x + buffer->clipable.clip_width))
{
if (x < background->clipable.clip_width &&
y < background->clipable.clip_height)
{
set_pixel(background, get_pixel(buffer,
x-pos->x + buffer->clipable.clip_x_position,
y-pos->y + buffer->clipable.clip_y_position), x, y);
}
x++;
}
y++;
}
}
void my_set_circle(t_bunny_pixelarray *pix,
t_bunny_position *origin,
t_bunny_position *dist,
unsigned int color)
{
double radius;
double mini_radius;
double angle;
t_bunny_position pos;
angle = 0;
dist->x = dist->x - origin->x;
dist->y = dist->y - origin->y;
radius = sqrt(pow(dist->x, 2) + pow(dist->y, 2));
mini_radius = 1;
while (mini_radius < radius)
{
angle = 0;
while (angle < 360)
{
pos.x = cos(DEGREES_TO_RADIANS(angle)) * mini_radius + origin->x;
pos.y = sin(DEGREES_TO_RADIANS(angle)) * mini_radius + origin->y;
if (pos.x > 0 && pos.x < pix->clipable.clip_width &&
pos.y > 0 && pos.y < pix->clipable.clip_height)
set_pixel(pix, color, pos.x, pos.y);
angle += 0.10;
}
mini_radius += 0.25;
}
}
void change_style(SDL_Surface *src, Uint32 style)
{
Uint8 rm, gm, bm;
int x, y;
SDL_GetRGB(style, src->format, &rm, &gm, &bm);
if ( SDL_MUSTLOCK(src) ) {
if ( SDL_LockSurface(src) < 0 ) {
return;
}
}
for (x = 0; x < src->w; x++) {
for (y = 0; y < src->h; y++) {
Uint32 color;
Uint8 r, g, b;
int nr, ng, nb;
color = get_pixel(src, x, y);
SDL_GetRGB(color, src->format, &r, &g, &b);
nr = r * rm / 255;
ng = g * gm / 255;
nb = b * bm / 255;
#define check_byte(r) ((r > 0)?((r < 255)?r:255):0)
nr = check_byte(nr);
ng = check_byte(ng);
nb = check_byte(nb);
#undef check_byte
color = SDL_MapRGB(src->format, (Uint8)nr, (Uint8)ng, (Uint8)nb);
set_pixel(src, x, y, color);
}
}
if ( SDL_MUSTLOCK(src) ) {
SDL_UnlockSurface(src);
}
}
void display_image(int row, int col, const void *image)
{
const u16 *p = image;
u32 width = *p++;
u32 height = *p++;
u32 pos;
u16 palette[128];
for (pos = 0; pos < width * height; ) {
u16 word = *p++;
u8 index = word >> 8;
if ((index & 0x80)) {
palette[index & 0x7f] = rgb24to16((word << 16) | *p++);
} else {
u8 rl = word;
u16 color = palette[index];
do {
set_pixel(row + pos / width, col + pos % width, color);
pos++;
} while (rl-- > 0);
}
}
}
void change_spec(SDL_Surface *src, SDL_Surface *new_spec)
{
int x, y;
if ( SDL_MUSTLOCK(src) ) {
if ( SDL_LockSurface(src) < 0 ) {
return;
}
}
for (x = 0; x < src->w; x++) {
for (y = 0; y < src->h; y++) {
int nr, ng, nb, a;
Uint8 sr, sg, sb;
Uint8 nsr, nsg, nsb;
SDL_GetRGB(get_pixel(src, x, y), src->format, &sr, &sg, &sb);
SDL_GetRGB(get_pixel(new_spec, x, y), new_spec->format, &nsr, &nsg, &nsb);
a = (nsr + nsg + nsb) / 3;
nr = sr - a + nsr;
ng = sg - a + nsg;
nb = sb - a + nsb;
#define check_byte(r) ((r > 0)?((r < 255)?r:255):0)
nr = check_byte(nr);
ng = check_byte(ng);
nb = check_byte(nb);
#undef check_byte
set_pixel(src, x, y, SDL_MapRGB(src->format, nr, ng, nb));
}
}
if ( SDL_MUSTLOCK(src) ) {
SDL_UnlockSurface(src);
}
}