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#include "web_svg.h"
#include "web_dom.h"
#include "board.h"
#include "comp.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <emscripten/emscripten.h>
#define NUM_SECTORS 20
#define SECTOR_WIDTH 18.0
#define C_BLACK "#272b2c"
#define C_WHITE "#fbe3ba"
#define C_RED "#f6302f"
#define C_GREEN "#22912d"
#define C_WIRE "#909ca0"
#define C_WIRE_INNER "#d8e6ec"
static inline struct dom_elem *svg_elem_init(char *name, int size_attrs)
{
return dom_elem_init("http://www.w3.org/2000/svg", name, size_attrs);
}
// draws a ring if angles are equal
struct dom_elem *gen_arc(double a1, double a2, double r1, double r2, char *col)
{
struct ccoords cc1 = pol_to_cart(
(struct pcoords){ .a = (a1 == a2 ? 1 : a2), .r = r1 });
struct ccoords cc2 = pol_to_cart(
(struct pcoords){ .a = (a1 == a2 ? 0 : a1), .r = r1 });
struct ccoords cc3 = pol_to_cart(
(struct pcoords){ .a = (a1 == a2 ? 0 : a1), .r = r2 });
struct ccoords cc4 = pol_to_cart(
(struct pcoords){ .a = (a1 == a2 ? 1 : a2), .r = r2 });
struct dom_elem *e = svg_elem_init("path", 2);
dom_elem_add_attr(e, "fill", col);
char buf[512];
int buflen = 0;
buflen += sprintf(buf + buflen, "M%f %f", cc1.x, cc1.y);
buflen += sprintf(buf + buflen, "A%f %f 0 0 0 %f %f",
r1, r1, cc2.x, cc2.y);
if (a1 == a2)
buflen += sprintf(buf + buflen, "A%f %f 0 1 0 %f %f",
r1, r1, cc1.x, cc1.y);
buflen += sprintf(buf + buflen, "L%f %f", cc3.x, cc3.y);
buflen += sprintf(buf + buflen, "A%f %f 0 0 1 %f %f",
r2, r2, cc4.x, cc4.y);
if (a1 == a2)
buflen += sprintf(buf + buflen, "A%f %f 0 1 1 %f %f",
r2, r2, cc3.x, cc3.y);
buf[buflen++] = 'Z';
buf[buflen++] = 0;
dom_elem_add_attr(e, "d", buf);
return e;
}
struct dom_elem *gen_segment(double a, double r1, double r2, char *col)
{
return gen_arc(a - SECTOR_WIDTH/2, a + SECTOR_WIDTH/2, r1, r2, col);
}
struct dom_elem *gen_ring(double r, double w, char *col)
{
return gen_arc(0, 0, r - w/2, r + w/2, col);
}
struct dom_elem *gen_circle(double r, char *col)
{
struct dom_elem *e = svg_elem_init("circle", 2);
dom_elem_add_attr(e, "fill", col);
dom_elem_add_attrd(e, "r", r);
return e;
}
struct dom_elem *gen_line(double a, double r1, double r2, double w, char *col)
{
struct ccoords cc1 = pol_to_cart((struct pcoords){ .a = a, .r = r1 });
struct ccoords cc2 = pol_to_cart((struct pcoords){ .a = a, .r = r2 });
struct dom_elem *e = svg_elem_init("line", 6);
dom_elem_add_attr(e, "stroke", col);
dom_elem_add_attrd(e, "x1", cc1.x);
dom_elem_add_attrd(e, "y1", cc1.y);
dom_elem_add_attrd(e, "x2", cc2.x);
dom_elem_add_attrd(e, "y2", cc2.y);
dom_elem_add_attrd(e, "stroke-width", w);
return e;
}
int draw_spider(int elemc, struct dom_elem **elemv)
{
for (int i = 5; i > 1; --i) {
elemv[elemc++] = gen_ring(OUTER_DISTS[i], WIRE_WIDTH, C_WIRE);
elemv[elemc++] = gen_ring(OUTER_DISTS[i], WIRE_WIDTH/2,
C_WIRE_INNER);
}
for (int i = 0; i < NUM_SECTORS; ++i) {
double a = 90 - i*SECTOR_WIDTH - SECTOR_WIDTH/2;
if (a < 0) a += 360;
elemv[elemc++] = gen_line(a, OUTER_DISTS[1],
OUTER_DISTS[5] + 10, WIRE_WIDTH, C_WIRE);
elemv[elemc++] = gen_line(a, OUTER_DISTS[1],
OUTER_DISTS[5] + 10, WIRE_WIDTH/2, C_WIRE_INNER);
}
for (int i = 1; i >= 0; --i) {
elemv[elemc++] = gen_ring(OUTER_DISTS[i], WIRE_WIDTH, C_WIRE);
elemv[elemc++] = gen_ring(OUTER_DISTS[i], WIRE_WIDTH/2,
C_WIRE_INNER);
}
return elemc;
}
int draw_numbers(int elemc, struct dom_elem **elemv)
{
elemv[elemc++] = gen_ring(DIAMETER/2 - WIRE_WIDTH*4, WIRE_WIDTH,
"#ddd");
int r = DIAMETER/2 - 33/2;
for (int i = 0; i < 20; ++i) {
struct dom_elem *e = elemv[elemc++] = svg_elem_init("text", 5);
dom_elem_add_attr(e, "font-size", "33");
dom_elem_add_attr(e, "fill", "#fff");
dom_elem_add_attr(e, "text-anchor", "middle");
dom_elem_add_attr(e, "dominant-baseline", "central");
char buf[512];
double a = 90 - i*SECTOR_WIDTH;
if (a < 0) a += 360;
struct ccoords cc = pol_to_cart(
(struct pcoords){ .a = a, .r = r });
sprintf(buf, "scale(1 -1) translate(%f %f) rotate(%f)",
cc.x, -cc.y, a <= 180 ? 90 -a : 270 -a);
dom_elem_add_attr(e, "transform", buf);
e->content = malloc(3);
sprintf(e->content, "%d", SECTORS[i]);
}
return elemc;
}
void svg_draw_board()
{
struct dom_elem **elemv = malloc(200 * sizeof(*elemv));
int elemc = 0;
elemv[elemc++] = gen_circle(DIAMETER/2, C_BLACK);
for (int i = 5; i > 1; --i) {
for (int j = 0; j < NUM_SECTORS; ++j) {
double a = 90 - j*SECTOR_WIDTH;
if (a < 0) a += 360;
elemv[elemc++] = gen_segment(a, OUTER_DISTS[i-1],
OUTER_DISTS[i],
i % 2 ? (j % 2 ? C_GREEN : C_RED) :
(j % 2 ? C_WHITE : C_BLACK));
}
}
elemv[elemc++] = gen_circle(OUTER_DISTS[1], C_GREEN);
elemv[elemc++] = gen_circle(OUTER_DISTS[0], C_RED);
elemc = draw_spider(elemc, elemv);
elemc = draw_numbers(elemc, elemv);
dom_append_elemv("#dartboard .base", elemc, elemv);
for (int i = 0; i < elemc; ++i)
dom_elem_free(elemv[i]);
free(elemv);
}
void svg_draw_point(double x, double y)
{
struct dom_elem *e = gen_circle(8, "#33f");
dom_elem_add_attr(e, "stroke", "#ff0");
dom_elem_add_attr(e, "stroke-width", "2");
dom_elem_add_attrd(e, "cx", x);
dom_elem_add_attrd(e, "cy", y);
dom_append_elemv("#dartboard .overlay", 1, &e);
dom_elem_free(e);
}
void svg_clear_points()
{
dom_set_content("#dartboard .overlay", NULL);
}
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