diff options
| -rw-r--r-- | main.js | 37 |
1 files changed, 18 insertions, 19 deletions
@@ -91,18 +91,18 @@ function lensflare(pos_x, pos_y) { const u = (x / canvas.width - .5) * aspect_ratio; const v = y / canvas.height - .5; - const intensity = 1.5; - const uv_len = Math.sqrt(u * u + v * v); + const intensity = 1.5 * 255; + const uv_len = u * u + v * v; const uvd_x = u * uv_len; const uvd_y = v * uv_len; - const uvd_len = Math.sqrt(uvd_x * uvd_x + uvd_y * uvd_y); + const uvd_len = uvd_x * uvd_x + uvd_y * uvd_y; const uvd_pos_x = uvd_x + pos_x; const uvd_pos_y = uvd_y + pos_y; let temp = uvd_pos_x * uvd_pos_x + uvd_pos_y * uvd_pos_y - const f2 = Math.max(1.0 / (1.0 + 32.0 * (temp * .64)), .0) * 0.1; - const f22 = Math.max(1.0 / (1.0 + 32.0 * (temp * .72)), .0) * 0.08; - const f23 = Math.max(1.0 / (1.0 + 32.0 * (temp * .81)), .0) * 0.06; + const f2 = Math.max(1.0 / (1.0 + 32.0 * temp * .64), .0) * 0.1; + const f22 = Math.max(1.0 / (1.0 + 32.0 * temp * .72), .0) * 0.08; + const f23 = Math.max(1.0 / (1.0 + 32.0 * temp * .81), .0) * 0.06; let uvx_x = u * (1 + 0.5) + uvd_x * 0.5; let uvx_y = v * (1 + 0.5) + uvd_y * 0.5; @@ -110,9 +110,9 @@ function lensflare(pos_x, pos_y) { let uvx_pos_y = uvx_y + pos_y; temp = uvx_pos_x * uvx_pos_x + uvx_pos_y * uvx_pos_y - const f4 = Math.max(0.01 - Math.pow((temp * .16), 1.2), .0) * 6.0; - const f42 = Math.max(0.01 - Math.pow((temp * .2025), 1.2), .0) * 5.0; - const f43 = Math.max(0.01 - Math.pow((temp * .25), 1.2), .0) * 3.0; + const f4 = Math.max(0.01 - temp * .16, .0) * 6.0; + const f42 = Math.max(0.01 - temp * .20, .0) * 5.0; + const f43 = Math.max(0.01 - temp * .25, .0) * 3.0; uvx_x = u * (1 + 0.4) + uvd_x * 0.4; uvx_y = v * (1 + 0.4) + uvd_y * 0.4; @@ -120,9 +120,9 @@ function lensflare(pos_x, pos_y) { uvx_pos_y = uvx_y + pos_y; temp = uvx_pos_x * uvx_pos_x + uvx_pos_y * uvx_pos_y - const f5 = Math.max(0.01 - Math.pow((temp * .04), 2.475), .0) * 2.0; - const f52 = Math.max(0.01 - Math.pow((temp * .16), 2.475), .0) * 2.0; - const f53 = Math.max(0.01 - Math.pow((temp * .36), 2.75), .0) * 2.0; + const f5 = Math.max(0.01 - temp * .04, .0) * 2.0; + const f52 = Math.max(0.01 - temp * .16, .0) * 2.0; + const f53 = Math.max(0.01 - temp * .36, .0) * 2.0; uvx_x = u * (1 + 0.5) + uvd_x * 0.5; uvx_y = v * (1 + 0.5) + uvd_y * 0.5; @@ -130,13 +130,13 @@ function lensflare(pos_x, pos_y) { uvx_pos_y = uvx_y - pos_y; temp = uvx_pos_x * uvx_pos_x + uvx_pos_y * uvx_pos_y - const f6 = Math.max(0.01 - Math.pow(temp * .9, 0.8), .0) * 6.0; - const f62 = Math.max(0.01 - Math.pow(temp * .1, 0.8), .0) * 3.0; - const f63 = Math.max(0.01 - Math.pow(temp * .12, 0.8), .0) * 5.0; + const f6 = Math.max(0.01 - temp * .9, .0) * 6.0; + const f62 = Math.max(0.01 - temp * .1, .0) * 3.0; + const f63 = Math.max(0.01 - temp * .12, .0) * 5.0; - imgdata.data[4 * i + 0] += 1.2 * ((f2 + f4 + f5 + f6) * 1.3 - uvd_len * .05) * intensity * 255; - imgdata.data[4 * i + 1] += 1.5 * ((f22 + f42 + f52 + f62) * 1.3 - uvd_len * .05) * intensity * 255; - imgdata.data[4 * i + 2] += 1.3 * ((f23 + f43 + f53 + f63) * 1.3 - uvd_len * .05) * intensity * 255; + imgdata.data[4 * i + 0] += 1.2 * ((f2 + f4 + f5 + f6) * 1.3 - uvd_len * .05) * intensity; + imgdata.data[4 * i + 1] += 1.5 * ((f22 + f42 + f52 + f62) * 1.3 - uvd_len * .05) * intensity; + imgdata.data[4 * i + 2] += 1.3 * ((f23 + f43 + f53 + f63) * 1.3 - uvd_len * .05) * intensity; imgdata.data[4 * i + 3] = 255; } ctx.putImageData(imgdata, 0, 0); @@ -161,6 +161,5 @@ function draw(viewport_scale) { ctx.filter = ''; lensflare(.3,.3); - } |