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mask rasterizer unfilled line end capping now works with aspect and blending.

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This commit is contained in:
Campbell Barton 2012-07-17 20:40:12 +00:00
parent b6a9ffffed
commit 7baa8d5203
1 changed files with 38 additions and 24 deletions
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62
source/blender/blenkernel/intern/mask_rasterize.c
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@ -47,7 +47,7 @@
#ifndef USE_RASKTER
#define SPLINE_RESOL_CAP 4
#define SPLINE_RESOL_CAP 32
#define SPLINE_RESOL 32
#define BUCKET_PIXELS_PER_CELL 8
@ -67,23 +67,26 @@
BLI_assert(_t[2] < vert_max || _t[2] == TRI_VERT); \
} (void)0
void rotate_point(const float cent[2], const float angle, float p[2])
void rotate_point(const float cent[2], const float angle, float p[2], const float asp[2])
{
const float s = sinf(angle);
const float c = cosf(angle);
float p_new[2];
const float s = sinf(angle);
const float c = cosf(angle);
float p_new[2];
/* translate point back to origin */
p[0] -= cent[0];
p[1] -= cent[1];
/* translate point back to origin */
p[0] -= cent[0];
p[1] -= cent[1];
/* rotate point */
p_new[0] = p[0] * c - p[1] * s;
p_new[1] = p[0] * s + p[1] * c;
p[0] /= asp[0];
p[1] /= asp[1];
/* translate point back */
p[0] = p_new[0] + cent[0];
p[1] = p_new[1] + cent[1];
/* rotate point */
p_new[0] = ((p[0] * c) - (p[1] * s)) * asp[0];
p_new[1] = ((p[0] * s) + (p[1] * c)) * asp[1];
/* translate point back */
p[0] = p_new[0] + cent[0];
p[1] = p_new[1] + cent[1];
}
/* --------------------------------------------------------------------- */
@ -720,13 +723,25 @@ void BKE_maskrasterize_handle_init(MaskRasterHandle *mr_handle, struct Mask *mas
/*cap ends */
if (!is_cyclic) {
unsigned int k;
float asp[2] = {1.0f, 1.0f};
if (do_aspect_correct) {
if (width != height) {
if (width < height) {
asp[1] = (float)width / (float)height;
}
else {
asp[0] = (float)height / (float)width;
}
}
}
for (k = 1; k < SPLINE_RESOL_CAP; k++) {
const float angle = (float)k * (1.0f / SPLINE_RESOL_CAP) * (float)M_PI;
copy_v2_v2(co_feather, diff_feather_points[0]);
rotate_point(diff_points[0], angle, co_feather);
rotate_point(diff_points[0], angle, co_feather, asp);
sf_vert = BLI_scanfill_vert_add(&sf_ctx, co_feather);
sf_vert->tmp.u = sf_vert_tot;
@ -739,7 +754,7 @@ void BKE_maskrasterize_handle_init(MaskRasterHandle *mr_handle, struct Mask *mas
for (k = 1; k < SPLINE_RESOL_CAP; k++) {
const float angle = (float)k * (1.0f / SPLINE_RESOL_CAP) * (float)M_PI;
copy_v2_v2(co_feather, diff_feather_points[tot_diff_point - 1]);
rotate_point(diff_points[tot_diff_point - 1], -angle, co_feather);
rotate_point(diff_points[tot_diff_point - 1], -angle, co_feather, asp);
sf_vert = BLI_scanfill_vert_add(&sf_ctx, co_feather);
sf_vert->tmp.u = sf_vert_tot;
@ -879,17 +894,16 @@ void BKE_maskrasterize_handle_init(MaskRasterHandle *mr_handle, struct Mask *mas
}
else {
unsigned int midvidx = start_vidx;
// unsigned int repvidx; /* repeat vertex index, ugh */
/***************
* cap end 'a' */
j = midvidx + (open_spline_ranges[open_spline_index].vertex_total * 3);
for (k = 0; k < SPLINE_RESOL_CAP - 2; k++, j++) {
*(face++) = midvidx + 0; /* z 1 */
*(face++) = midvidx + 0; /* z 1 */
*(face++) = j + 0; /* z 0 */
*(face++) = j + 1; /* z 0 */
*(face++) = TRI_VERT;
face_index++;
FACE_ASSERT(face - 4, sf_vert_tot);
}
@ -898,16 +912,16 @@ void BKE_maskrasterize_handle_init(MaskRasterHandle *mr_handle, struct Mask *mas
/* 2 tris that join the original */
*(face++) = midvidx + 0; /* z 1 */
*(face++) = midvidx + 0; /* z 1 */
*(face++) = midvidx + 1; /* z 0 */
*(face++) = j + 0; /* z 0 */
*(face++) = TRI_VERT;
face_index++;
FACE_ASSERT(face - 4, sf_vert_tot);
*(face++) = midvidx + 0; /* z 1 */
*(face++) = midvidx + 0; /* z 1 */
*(face++) = j + SPLINE_RESOL_CAP - 2; /* z 0 */
*(face++) = midvidx + 2; /* z 0 */
*(face++) = TRI_VERT;
face_index++;
FACE_ASSERT(face - 4, sf_vert_tot);
@ -921,10 +935,10 @@ void BKE_maskrasterize_handle_init(MaskRasterHandle *mr_handle, struct Mask *mas
midvidx = start_vidx + (open_spline_ranges[open_spline_index].vertex_total * 3) - 3;
for (k = 0; k < SPLINE_RESOL_CAP - 2; k++, j++) {
*(face++) = midvidx; /* z 1 */
*(face++) = midvidx; /* z 1 */
*(face++) = j + 1; /* z 0 */
*(face++) = j + 0; /* z 0 */
*(face++) = TRI_VERT;
face_index++;
FACE_ASSERT(face - 4, sf_vert_tot);
}
@ -933,16 +947,16 @@ void BKE_maskrasterize_handle_init(MaskRasterHandle *mr_handle, struct Mask *mas
/* 2 tris that join the original */
*(face++) = midvidx + 0; /* z 1 */
*(face++) = midvidx + 0; /* z 1 */
*(face++) = j + 0; /* z 0 */
*(face++) = midvidx + 1; /* z 0 */
*(face++) = TRI_VERT;
face_index++;
FACE_ASSERT(face - 4, sf_vert_tot);
*(face++) = midvidx + 0; /* z 1 */
*(face++) = midvidx + 0; /* z 1 */
*(face++) = midvidx + 2; /* z 0 */
*(face++) = j + SPLINE_RESOL_CAP - 2; /* z 0 */
*(face++) = TRI_VERT;
face_index++;
FACE_ASSERT(face - 4, sf_vert_tot);