diff options
| author | Vito Caputo <vcaputo@pengaru.com> | 2023-08-24 12:55:25 -0700 |
|---|---|---|
| committer | Vito Caputo <vcaputo@pengaru.com> | 2023-08-24 12:55:25 -0700 |
| commit | 4bd76306ca4b2e2b849859401585c3e55cb710a2 (patch) | |
| tree | 6a5ffd8edac074d364ee3bbfd87c86b6b5c4055f /src/modules/shapes | |
| parent | 003c1a63635e323dc677be20c529a7c4738866f2 (diff) | |
modules/shapes: s/cos/sin/ for pinches
Preparatory commit for potential n_pinches=0, sin(0)=0 which
behaves better here where n_pinches=0 should be a noop.
Diffstat (limited to 'src/modules/shapes')
| -rw-r--r-- | src/modules/shapes/shapes.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/src/modules/shapes/shapes.c b/src/modules/shapes/shapes.c index b7f00bf..2108dc1 100644 --- a/src/modules/shapes/shapes.c +++ b/src/modules/shapes/shapes.c @@ -295,7 +295,7 @@ static void shapes_render_fragment(til_module_context_t *context, til_stream_t * for (unsigned x = xstart; x < xend; x++, X++, XX += s) { float a = rads[y * radcache->width + x] = atan2f(YY, XX); - if (YYY+X*X < r_sq * (1.f - fabsf(cosf(n_pinches * a + pinch)) * pinch_s)) + if (YYY+X*X < r_sq * (1.f - fabsf(sinf(n_pinches * a + pinch)) * pinch_s)) til_fb_fragment_put_pixel_unchecked(fragment, TIL_FB_DRAW_FLAG_TEXTURABLE, x, y, 0xffffffff); /* TODO: stop relying on checked for clipping */ else if (!fragment->cleared) til_fb_fragment_put_pixel_unchecked(fragment, 0, x, y, 0x0); @@ -306,7 +306,7 @@ static void shapes_render_fragment(til_module_context_t *context, til_stream_t * for (unsigned x = xstart; x < xend; x++, X++, XX += s) { float a = rads[y * radcache->width + x]; - if (YYY+X*X < r_sq * (1.f - fabsf(cosf(n_pinches * a + pinch)) * pinch_s)) + if (YYY+X*X < r_sq * (1.f - fabsf(sinf(n_pinches * a + pinch)) * pinch_s)) til_fb_fragment_put_pixel_unchecked(fragment, TIL_FB_DRAW_FLAG_TEXTURABLE, x, y, 0xffffffff); /* TODO: stop relying on checked for clipping */ else if (!fragment->cleared) til_fb_fragment_put_pixel_unchecked(fragment, 0, x, y, 0x0); @@ -337,7 +337,7 @@ static void shapes_render_fragment(til_module_context_t *context, til_stream_t * float a = rads[y * radcache->width + x] = atan2f(YY, XX); float r = cosf(n_points * (a + spin)) * .5f + .5f; - r *= 1.f - fabsf(cosf(n_pinches * (a + pinch))) * pinch_s; + r *= 1.f - fabsf(sinf(n_pinches * (a + pinch))) * pinch_s; if (XX * XX + YYYY < r * r) til_fb_fragment_put_pixel_unchecked(fragment, TIL_FB_DRAW_FLAG_TEXTURABLE, x, y, 0xffffffff); @@ -350,7 +350,7 @@ static void shapes_render_fragment(til_module_context_t *context, til_stream_t * float a = rads[y * radcache->width + x]; float r = cosf(n_points * (a + spin)) * .5f + .5f; - r *= 1.f - fabsf(cosf(n_pinches * (a + pinch))) * pinch_s; + r *= 1.f - fabsf(sinf(n_pinches * (a + pinch))) * pinch_s; if (XX * XX + YYYY < r * r) til_fb_fragment_put_pixel_unchecked(fragment, TIL_FB_DRAW_FLAG_TEXTURABLE, x, y, 0xffffffff); @@ -384,7 +384,7 @@ static void shapes_render_fragment(til_module_context_t *context, til_stream_t * for (unsigned x = xstart; x < xend; x++, X++, XX += s) { float a = rads[y * radcache->width + x] = atan2f(YY, XX); - if (abs(Y) + abs(X) < r * (1.f - fabsf(cosf(n_pinches * a + pinch)) * pinch_s)) + if (abs(Y) + abs(X) < r * (1.f - fabsf(sinf(n_pinches * a + pinch)) * pinch_s)) til_fb_fragment_put_pixel_unchecked(fragment, TIL_FB_DRAW_FLAG_TEXTURABLE, x, y, 0xffffffff); else if (!fragment->cleared) til_fb_fragment_put_pixel_unchecked(fragment, 0, x, y, 0x0); @@ -394,7 +394,7 @@ static void shapes_render_fragment(til_module_context_t *context, til_stream_t * for (unsigned x = xstart; x < xend; x++, X++, XX += s) { float a = rads[y * radcache->width + x]; - if (abs(Y) + abs(X) < r * (1.f - fabsf(cosf(n_pinches * a + pinch)) * pinch_s)) + if (abs(Y) + abs(X) < r * (1.f - fabsf(sinf(n_pinches * a + pinch)) * pinch_s)) til_fb_fragment_put_pixel_unchecked(fragment, TIL_FB_DRAW_FLAG_TEXTURABLE, x, y, 0xffffffff); else if (!fragment->cleared) til_fb_fragment_put_pixel_unchecked(fragment, 0, x, y, 0x0); @@ -426,7 +426,7 @@ static void shapes_render_fragment(til_module_context_t *context, til_stream_t * float r = (M_2_PI * asinf(sinf(n_points * (a + spin)) * .5f + .5f)) * .5f + .5f; /* ^^^^^^^^^^^^^^^^^^^ approximates a triangle wave */ - r *= 1.f - fabsf(cosf(n_pinches * a + pinch)) * pinch_s; + r *= 1.f - fabsf(sinf(n_pinches * a + pinch)) * pinch_s; if (XX * XX + YYYY < r * r) til_fb_fragment_put_pixel_unchecked(fragment, TIL_FB_DRAW_FLAG_TEXTURABLE, x, y, 0xffffffff); @@ -440,7 +440,7 @@ static void shapes_render_fragment(til_module_context_t *context, til_stream_t * float r = (M_2_PI * asinf(sinf(n_points * (a + spin)) * .5f + .5f)) * .5f + .5f; /* ^^^^^^^^^^^^^^^^^^^ approximates a triangle wave */ - r *= 1.f - fabsf(cosf(n_pinches * a + pinch)) * pinch_s; + r *= 1.f - fabsf(sinf(n_pinches * a + pinch)) * pinch_s; if (XX * XX + YYYY < r * r) til_fb_fragment_put_pixel_unchecked(fragment, TIL_FB_DRAW_FLAG_TEXTURABLE, x, y, 0xffffffff); |