72 lines
2.8 KiB
C
72 lines
2.8 KiB
C
#include <stdio.h>
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#include <time.h>
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#include <stdlib.h>
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// <rect x="25" y="25" width="200" height="200" fill="lime" stroke-width="4" stroke="pink" />
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// <circle cx="125" cy="125" r="75" fill="orange" />
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// <polyline points="50,150 50,200 200,200 200,100" stroke="red" stroke-width="4" fill="none" />
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// <line x1="50" y1="50" x2="200" y2="200" stroke="blue" stroke-width="4" />
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/* This function draws the disks. It stops when it has drawn all the disks
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* or before getting to a minimum y, which represents the height of the băț
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* after that it picks a random color from an array of predefined colors and
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* draws the disks before calling itself recusively.
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*/
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void draw_disks(FILE * file, int disks, int peg, int width, int y) {
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if ( !disks ) { return; } // no more disks to draw
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if ( y < 120) { return; } // keeps the peg from overflowing;
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char *colors[] = { "#7fffd4", "#ec8484", "#149dca", "#e4d93c", "#222d24",
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"#ef8a48", "#ee6517", "#bbe200", "#ba1d1e", "#ffc4c4"};
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int random_color = rand() % 10;
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int x = 70 + ((peg - 1) * 100);
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fprintf(file, "<rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"20\" "\
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"fill=\"%s\" stroke=\"black\" stroke-width=\"1\" />\r\n",
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x - width / 2 + 10, y, width, colors[random_color]);
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draw_disks(file, disks - 1, peg, width - width / 4, y - 21);
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}
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/*
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* This functions draws the bețe by using recursion, it stops when pegs is 0
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* and it places them at 100px distance between them. (i think)
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*/
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void draw_pegs(FILE * file, int pegs, int width) {
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if ( !pegs ) { return; } // exit function
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fprintf(file, "<rect x=\"%d\" y=\"120\" width=\"15\" height=\"130\" "\
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"fill=\"firebrick\" />\r\n", width);
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draw_pegs(file, pegs - 1, width + 100);
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}
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/*
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* This function draws the whole thing.
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* First it sets up the secene, it calls the function that draws "bețe",
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* and after it calls the function that draws the disks.
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*/
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void draw_peg_scene(FILE * file, int pegs, int disks) {
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int scene_width = pegs * 100;
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fprintf(file, "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\">\r\n"); // start
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// draw scene
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fprintf(file, "<rect x=\"30\" y=\"250\" width=\"%d\" height=\"20\" "\
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"fill=\"firebrick\" />\r\n", scene_width);
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draw_pegs(file, pegs, 70); // draw pegs
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draw_disks(file, disks, rand() % pegs + 1, 80, 230);
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fprintf(file, "</svg>"); // end
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}
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int main(int argc, char *argv[]) {
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srand(time(NULL)); // seed random num generator to make colors unique each time
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FILE * file;
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if ( !(file = fopen("test.svg", "w")) ) {
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perror("Can't open file!");
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return -1;
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}
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if ( argc < 3 ) {
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printf("Invalid ussage. Correct usage: %s pegs disks\n", argv[0]);
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return -1;
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}
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draw_peg_scene(file, atoi(argv[1]), atoi(argv[2]));
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if ( fclose(file) ) {
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perror("Can't close file!");
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}
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return 0;
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}
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