From 93def587411331e5b1baf0c63eef8416ec19777c Mon Sep 17 00:00:00 2001
From: Orestis <orestis.malaspinas@pm.me>
Date: Mon, 11 Oct 2021 14:13:10 +0200
Subject: [PATCH] updated to take into account shift and renorm
---
practical_work/tp_vec2/main.c | 34 ++++++++++++++--------------------
1 file changed, 14 insertions(+), 20 deletions(-)
diff --git a/practical_work/tp_vec2/main.c b/practical_work/tp_vec2/main.c
index ac27974..7bee38f 100644
--- a/practical_work/tp_vec2/main.c
+++ b/practical_work/tp_vec2/main.c
@@ -7,34 +7,30 @@
#define SCREEN_WIDTH 1280
#define SCREEN_HEIGHT 720
-double rand_dbl()
-{
- return ((double)rand()) / RAND_MAX;
+double rand_dbl() {
+ return 2.0 * ((double)rand()) / RAND_MAX - 0.5;
}
-int main()
-{
+int main() {
srand(time(NULL));
struct gfx_context_t *ctxt =
gfx_create("Vec2 demo", SCREEN_WIDTH, SCREEN_HEIGHT);
- if (!ctxt)
- {
+ if (!ctxt) {
fprintf(stderr, "Graphics initialization failed!\n");
return EXIT_FAILURE;
}
- vec2 center = vec2_create(0.5, 0.5);
+ vec2 center = vec2_create(0.0, 0.0);
double radius = 0.5;
- for (int i = 0; i < 250000; i++)
- {
+ for (int i = 0; i < 250000; i++) {
vec2 r = vec2_create(rand_dbl(), rand_dbl());
- //Draw pixel if in circle
- if (vec2_norm(vec2_sub(r, center)) < radius)
- {
- coordinates pixel = vec2_to_coordinates(r, SCREEN_WIDTH, SCREEN_HEIGHT);
- //Random color (not black)
+ // Draw pixel if in circle
+ if (vec2_norm(vec2_sub(r, center)) < radius) {
+ coordinates pixel =
+ vec2_to_coordinates(r, SCREEN_WIDTH, SCREEN_HEIGHT);
+ // Random color (not black)
uint32_t color = rand() % 0xFFFFFF;
gfx_putpixel(ctxt, pixel.column, pixel.row, color);
@@ -42,13 +38,11 @@ int main()
}
gfx_present(ctxt);
- while (true)
- {
- if (gfx_keypressed() == SDLK_ESCAPE)
- {
+ while (true) {
+ if (gfx_keypressed() == SDLK_ESCAPE) {
break;
}
}
gfx_destroy(ctxt);
return EXIT_SUCCESS;
-}
\ No newline at end of file
+}
--
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