R_API void r_cons_canvas_line_back_edge (RConsCanvas *c, int x, int y, int x2, int y2, RCanvasLineStyle *style, int ybendpoint1, int xbendpoint, int ybendpoint2, int isvert) {
int min_x1 = R_MIN (x, xbendpoint);
int min_x2 = R_MIN (x2, xbendpoint);
int diff_x1 = R_ABS (x - xbendpoint);
int diff_x2 = R_ABS (x2 - xbendpoint);
int diff_y = R_ABS ((y + ybendpoint1 + 1) - (y2 - ybendpoint2- 1));
int w1 = diff_x1 == 0 ? 0 : diff_x1 + 1;
int w2 = diff_x2 == 0 ? 0 : diff_x2 + 1;
apply_line_style (c, x, y, x2, y2, style, isvert);
if (isvert) {
draw_vertical_line (c, x, y + 1, ybendpoint1 + 1);
draw_horizontal_line (c, min_x1, y + ybendpoint1 + 2, w1, REV_APEX_APEX);
draw_vertical_line (c, xbendpoint, y2 - ybendpoint2 + 1, diff_y - 1);
draw_horizontal_line (c, min_x2, y2 - ybendpoint2, w2, DOT_DOT);
draw_vertical_line (c, x2, y2 - ybendpoint2 + 1, ybendpoint2);
} else {
int miny1 = R_MIN (y, xbendpoint);
int miny2 = R_MIN (y2, xbendpoint);
int diff_y1 = R_ABS (y - xbendpoint);
int diff_y2 = R_ABS (y2 - xbendpoint);
draw_horizontal_line (c, x + 1, y, 1 + ybendpoint1 + 1, xbendpoint > y ? NRM_DOT : NRM_APEX);
draw_vertical_line (c, x + 1 + ybendpoint1 + 1, miny1 + 1, diff_y1 - 1);
draw_horizontal_line (c, x2 - ybendpoint2, xbendpoint, (x + 1 + ybendpoint1 + 1) - (x2 - ybendpoint2) + 1, xbendpoint > y ? REV_APEX_APEX : DOT_DOT);
draw_vertical_line (c, x2 - ybendpoint2, miny2 + 1, diff_y2 - 1);
draw_horizontal_line (c, x2 - ybendpoint2, y2, ybendpoint2 + 1, xbendpoint > y ? DOT_NRM : REV_APEX_NRM);
}
}
R_API void r_cons_canvas_line_square (RConsCanvas *c, int x, int y, int x2, int y2, RCanvasLineStyle *style) {
int min_x = R_MIN (x, x2);
int diff_x = R_ABS (x - x2);
int diff_y = R_ABS (y - y2);
apply_line_style (c, x, y, x2, y2, style, 1);
// --
// TODO: find if there's any collision in this line
if (y2 - y > 1) {
int hl = diff_y / 2 - 1;
int hl2 = diff_y - hl;
int w = diff_x == 0 ? 0 : diff_x + 1;
int style = min_x == x ? APEX_DOT : DOT_APEX;
draw_vertical_line (c, x, y + 1, hl);
draw_vertical_line (c, x2, y + hl + 1, hl2);
draw_horizontal_line (c, min_x, y + hl + 1, w, style);
} else {
if (y2 == y) {
draw_horizontal_line (c, min_x, y, diff_x + 1, DOT_DOT);
} else {
if (x != x2) {
draw_horizontal_line (c, min_x, y, diff_x + 1, REV_APEX_APEX);
}
draw_vertical_line (c, x2, y2, diff_y);
}
}
c->attr = Color_RESET;
}
void
Canvas::draw_rect(uint8_t x, uint8_t y, uint8_t width, uint8_t height)
{
draw_horizontal_line(x, y, width);
draw_vertical_line(x + width, y, height);
draw_vertical_line(x, y, height);
draw_horizontal_line(x, y + height, width);
}
void bmp_image::draw_filled_ellipse(int x0, int y0, int x1, int y1, rgba_color_t color) {
//http://free.pages.at/easyfilter/bresenham.html
int a = std::abs(x1-x0);
int b = std::abs(y1-y0);
int b1 = b & 1; /* values of diameter */
long dx = 4*(1-a)*b*b;
int dy = 4*(b1+1)*a*a; /* error increment */
long err = dx+dy+b1*a*a, e2; /* error of 1.step */
if (x0 > x1) { /* if called with swapped points */
x0 = x1;
x1 += a;
}
if (y0 > y1) { /* .. exchange them */
y0 = y1;
}
y0 += (b+1)/2;
y1 = y0-b1; /* starting pixel */
a *= 8*a;
b1 = 8*b*b;
do {
draw_horizontal_line(y0, x0, x1, color);
draw_horizontal_line(y1, x0, x1, color);
e2 = 2*err;
if (e2 >= dx) {
x0++; x1--; err += dx += b1;
} /* x step */
if (e2 <= dy) {
y0++; y1--; err += dy += a;
} /* y step */
} while (x0 <= x1);
while (y0-y1 < b) { /* too early stop of flat ellipses a=1 */
draw_horizontal_line(y0, x0-1, x1+1, color);
draw_horizontal_line(y1, x0-1, x1+1, color);
++y0;
--y1;
}
}
/*
* standard filling algorithm
*/
void Triangle::doFill(PPM_Image &I, const PPM_Color &c) const {
Point p1 {p1_}, p2 {p2_}, p3 {p3_};
if (p1.y() == p2.y() && p2.y() == p3.y()) return;
// sort the vertices
if (p1.y() > p2.y()) std::swap(p1, p2);
if (p1.y() > p3.y()) std::swap(p1, p3);
if (p2.y() > p3.y()) std::swap(p2, p3);
// auxilliary variables
int y1 {p1.y()}, y2 {p2.y()}, y3 {p3.y()};
const int x1 {p1.x()}, x2 {p2.x()}, x3 {p3.x()}, h {y3 - y1}; // height
const int dx12 {x2- x1}, dx13 {x3 - x1}, dx23 {x3 - x2};
const int dy12 {y2- y1}, dy23 {y3 - y2};
const bool is_y12 {y1 == y2};
//const uint clr {c.color()};
for (int y {0}; y < h; ++y) {
int xa = x1 + dx13 * (double(y) / h);
// which part of the triangle
int xb = (y > dy12 || is_y12) ? x2 + dx23 * (double(y-dy12) / dy23):
x1 + dx12 * (double(y) / dy12);
if (xa > xb) std::swap(xa, xb);
// fill the triangle
//const int y_cur {y1 + y};
draw_horizontal_line(I, c, xa, xb, y1 + y);
//for (int x {xa}; x <= xb; ++x)
// I[x][y_cur] = clr;
}
}
void display_scores(void){
set_display_attribute(BAR_COLOUR);
draw_horizontal_line(HIGH_LABEL_Y,1,40);
move_cursor(HIGH_LABEL_X,HIGH_LABEL_Y);
printf_P(PSTR("HIGH SCORES"));
move_cursor(TABLE_LABEL_X,TABLE_LABEL_Y);
printf_P(PSTR(" Place | Score | User "));
move_cursor(TABLE_LABEL_X,TABLE_LABEL_Y+1);
printf_P(PSTR("-----------------------------------"));
struct highscore * scores = get_highscores();
uint8_t i = 0;
while (i<SCORES && (scores+i)->score){
move_cursor(TABLE_LABEL_X,TABLE_LABEL_Y+2+i);
printf_P(PSTR(" %d"),(i+1));
move_cursor(TABLE_LABEL_X+7,TABLE_LABEL_Y+2+i);
printf_P(PSTR("| %d"),(scores+i)->score);
move_cursor(TABLE_LABEL_X+21,TABLE_LABEL_Y+2+i);
printf_P(PSTR("| %s"),(scores+i)->name);
i++;
}
if (i == 0){
move_cursor(12,TABLE_LABEL_Y+3);
printf_P(PSTR("No High Scores"));
}
move_cursor(WIDTH,HEIGHT);
}
void
Canvas::draw_roundrect(uint8_t x, uint8_t y,
uint8_t width, uint8_t height,
uint8_t radius)
{
uint8_t diameter = 2 * radius;
int16_t f = 1 - radius;
int16_t dx = 1;
int16_t dy = -diameter;
int8_t rx = 0;
int8_t ry = radius;
// Adjust position, width and height
x += radius;
y += radius;
width -= diameter;
height -= diameter;
// Draw the boundary rectangle
draw_horizontal_line(x, y - radius, width + 1);
draw_vertical_line(x + width + radius, y, height + 1);
draw_vertical_line(x - radius, y, height + 1);
draw_horizontal_line(x, y + height + radius, width + 1);
// Draw the round corners
while (rx < ry) {
if (f >= 0) {
ry--;
dy += 2;
f += dy;
}
rx++;
dx += 2;
f += dx;
draw_pixel(x + rx + width, y - ry);
draw_pixel(x + ry + width, y - rx);
draw_pixel(x + rx + width, y + ry + height);
draw_pixel(x + ry + width, y + rx + height);
draw_pixel(x - rx, y + ry + height);
draw_pixel(x - ry, y + rx + height);
draw_pixel(x - rx, y - ry);
draw_pixel(x - ry, y - rx);
}
}
void Rectangle::doFill(PPM_Image &I, const PPM_Color &c) const {
const int w {I.width() - 1}, h {I.height() - 1};
const int x1 = p_.x(), y1 = p_.y();
const int xmin {std::min(std::max(0, x1), w)};
const int xmax {std::min(std::max(0, x1 + int(w_)), w)};
//const uint clr {c.color()};
for (auto y = std::min(std::max(0, y1), h);
y <= std::min(std::max(0, y1 + int(h_)), h); ++y)
draw_horizontal_line(I, c, xmin, xmax, y);
//for (auto x = xmin; x < xmax; ++x)
// I[x][y] = clr;
}
void bmp_image::draw_filled_circle(int x0, int y0, int radius, rgba_color_t color) {
assert(radius >= 0);
//Midpoint circle algorithm
//std::cout << x0 << ", " << y0 << ", " << radius << ", " << std::hex << color << std::endl;
int f = 1 - radius;
int ddF_x = 1;
int ddF_y = -2 * radius;
int x = 0;
int y = radius;
draw_horizontal_line(y0, x0 - radius, x0 + radius, color);
draw_vertical_line(x0, y0 - radius, y0 + radius, color);
while(x < y) {
if(f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
draw_horizontal_line(y0 + y, x0 - x, x0 + x, color);
draw_horizontal_line(y0 - y, x0 - x, x0 + x, color);
draw_horizontal_line(y0 + x, x0 - y, x0 + y, color);
draw_horizontal_line(y0 - x, x0 - y, x0 + y, color);
}
}
/* The following function divides the GLCD display panel into
* equal number of rows based on the first value passed and
* equal number of columns based on the second value passed
* as arguments.
*/
draw_grid(int x, int y)
{
int horizontal_lines, vertical_lines;
int i;
horizontal_lines = GLCD_ROWS/x;
for(i=0; i<(x+1); i++)
{
draw_horizontal_line(horizontal_lines*i);
}
vertical_lines = GLCD_COLUMNS/y;
for(i=0; i<(x+1); i++)
{
draw_vertical_line(vertical_lines*i);
}
}
void draw_grid(){
int hpos; //счётчик
int ypos; //счётчик
int grid_height=(cell_height+1)*row_num+1;
int grid_width=(cell_width+1)*col_num+1;
for (ypos=0;ypos<grid_width;ypos++){
if (ypos % (cell_width+1) == 0){
draw_vertical_line(pimg,ypos, grid_height);
}
}
for (hpos=0;hpos<grid_height;hpos++){
if (hpos % (cell_height+1) == 0){ //+1 т.к. 1 пиксель между ячейками (граница)
draw_horizontal_line(pimg,hpos, grid_width);
}
}
}
R_API void r_cons_canvas_line_square_defined (RConsCanvas *c, int x, int y, int x2, int y2, RCanvasLineStyle *style, int bendpoint, int isvert) {
int min_x = R_MIN (x, x2);
int diff_x = R_ABS (x - x2);
int diff_y = R_ABS (y - y2);
int min_y = R_MIN (y, y2);
apply_line_style (c, x, y, x2, y2, style, isvert);
if (isvert) {
if (x2 == x) {
draw_vertical_line (c, x, y + 1, diff_y);
} else if (y2 - y > 1) {
int h1 = 1 + bendpoint;
int h2 = diff_y - h1;
int w = diff_x == 0 ? 0 : diff_x + 1;
int style = min_x == x ? APEX_DOT : DOT_APEX;
draw_vertical_line (c, x, y + 1, h1);
draw_horizontal_line (c, min_x, y + bendpoint + 2, w, style);
draw_vertical_line (c, x2, y + h1 + 1 + 1, h2);
} else {
//TODO: currently copy-pasted
if (y2 == y) {
draw_horizontal_line (c, min_x, y, diff_x + 1, DOT_DOT);
} else {
if (x != x2) {
draw_horizontal_line (c, min_x, y, diff_x + 1, REV_APEX_APEX);
}
draw_vertical_line (c, x2, y2, diff_y-2);
}
}
} else {
if (y2 == y) {
draw_horizontal_line (c, min_x + 1, y, diff_x, NRM_NRM);
} else if (x2 - x > 1) {
int w1 = 1 + bendpoint;
int w2 = diff_x - w1;
//int h = diff_x;// == 0 ? 0 : diff_x + 1;
//int style = min_x == x ? APEX_DOT : DOT_APEX;
//draw_vertical_line (c, x, y + 1, h1);
draw_horizontal_line (c, x + 1, y, w1 + 1, y2 > y ? NRM_DOT : NRM_APEX);
//draw_horizontal_line (c, min_x, y + bendpoint + 2, w, style);
draw_vertical_line (c, x + 1 + w1, min_y + 1, diff_y - 1);
//draw_vertical_line (c, x2, y + h1 + 1 + 1, h2);
draw_horizontal_line (c, x + 1 + w1, y2, w2, y2 < y ? DOT_NRM : REV_APEX_NRM);
}
}
c->attr = Color_RESET;
}
void reset_terminal(void){
clear_terminal();
set_display_attribute(BAR_COLOUR);
draw_horizontal_line(1,1,WIDTH);
set_display_attribute(BAR_COLOUR);
draw_vertical_line(40,1,HEIGHT);
move_cursor(TITLE_X,TITLE_Y);
printf_P(PSTR("FROGGER"));
draw_lives();
draw_score();
draw_level();
draw_time(16);
display_scores();
draw_status(0);
draw_frog();
set_display_attribute(8);
}
void
Gradient::resize(float width, float height)
{
float w;
if(direction == LEFT_RIGHT)
w = width;
else if(direction == TOP_BOTTOM)
w = height;
else
assert(false);
float dr = ((float) to.r - (float) from.r) / w;
float dg = ((float) to.g - (float) from.g) / w;
float db = ((float) to.b - (float) from.b) / w;
float da = ((float) to.a - (float) from.a) / w;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
SDL_Surface* surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
(int) width, (int) height,
32, 0xff000000,
0x00ff0000,
0x0000ff00,
0x000000ff);
#else
SDL_Surface* surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
(int) width, (int) height,
32, 0x000000ff,
0x0000ff00,
0x00ff0000,
0xff000000);
#endif
if(surface == 0)
throw std::runtime_error("Couldn't create SDL_Surface for gradient. "
"(Out of memory?");
float r = from.r;
float g = from.g;
float b = from.b;
float a = from.a;
if(direction == LEFT_RIGHT) {
for(int x = 0; x < (int) width; ++x) {
draw_vertical_line(surface, x, 0, (int) height,
lrintf(r), lrintf(g),
lrintf(b), lrintf(a));
r += dr;
g += dg;
b += db;
a += da;
}
} else {
for(int y = 0; y < (int) height; ++y) {
draw_horizontal_line(surface, 0, y, (int) width,
lrintf(r), lrintf(g),
lrintf(b), lrintf(a));
r += dr;
g += dg;
b += db;
a += da;
}
}
texture.reset(texture_manager->create(surface));
this->width = width;
this->height = height;
}
void Rectangle::doDraw(PPM_Image &I, const PPM_Color &c) const {
const int x1 = p_.x(), x2 = x1 + w_, y1 = p_.y(), y2 = y1 + h_;
const int w {I.width() - 1}, h {I.height() - 1};
const int xmin {std::min(std::max(0, x1), w)};
const int xmax {std::min(std::max(0, x2), w)};
const int ymin {std::min(std::max(0, y1), h)};
const int ymax {std::min(std::max(0, y2), h)};
const uint clr {c.color()};
/* drawing all sides: if the rectangle goes beyond the image size, then
* drawing lines on the image border
*/
//for (auto x = xmin; x <= xmax; ++x) {
// I[x][ymin] = clr;
// I[x][ymax] = clr;
//}
//for (auto y = ymin; y <= ymax; ++y) {
// I[xmin][y] = clr;
// I[xmax][y] = clr;
//}
// avoid drawing lines on the border
if (y1 >= 0) {
if (y2 < h)
for (auto x = xmin; x <= xmax; ++x) {
I[x][y1] = clr;
I[x][y2] = clr;
}
else if (y1 <= h)
draw_horizontal_line(I, c, xmin, xmax, y1);
//for (auto x = xmin; x <= xmax; ++x)
// I[x][y1] = clr;
} else if (y2 >= 0 && y2 < h)
draw_horizontal_line(I, c, xmin, xmax, y2);
//for (auto x = xmin; x <= xmax; ++x)
// I[x][y2] = clr;
if (x1 >= 0) {
if (x2 < w)
for (auto y = ymin; y <= ymax; ++y) {
I[x1][y] = clr;
I[x2][y] = clr;
}
else if (x1 <= w)
draw_vertical_line(I, c, x1, ymin, ymax);
//for (auto y = ymin; y <= ymax; ++y)
// I[x1][y] = clr;
} else if (x2 >= 0 && x2 < w)
draw_vertical_line(I, c, x2, ymin, ymax);
//for (auto y = ymin; y <= ymax; ++y)
// I[x2][y] = clr;
// the code below is shorter than above, but, perhaps, less efficient
//if (y1 >= 0 && y1 < h)
// draw_horizontal_line(I, c, xmin, xmax, y1);
//if (y2 >= 0 && y2 < h)
// draw_horizontal_line(I, c, xmin, xmax, y2);
//if (x1 >= 0 && x1 < w)
// draw_vertical_line(I, c, x1, ymin, ymax);
//if (x2 >= 0 && x2 < w)
// draw_vertical_line(I, c, x2, ymin, ymax);
}
void clip_n_draw_horizontal_line(PPM_Image &I, const PPM_Color &c,
const int x1, const int x2, const int y) {
const int w {I.width() - 1};
draw_horizontal_line(I, c, std::min(std::max(0, x1), w),
std::min(std::max(0, x2), w), y);
}
