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authorStanislaw Halik <sthalik@misaki.pl>2017-04-17 17:19:00 +0200
committerStanislaw Halik <sthalik@misaki.pl>2017-04-17 17:19:00 +0200
commitc3aeea33498e3caa77b8f6b7931a8e701fd6e02e (patch)
tree5761ea097c44ae91ef07bc0e1ee60adfc33b2cd4 /pose-widget/pose-widget.cpp
parentec89df61da28a83eb1c00e3e27d69fa1421230f4 (diff)
pose-widget: iterate over BGR
Diffstat (limited to 'pose-widget/pose-widget.cpp')
-rw-r--r--pose-widget/pose-widget.cpp61
1 files changed, 28 insertions, 33 deletions
diff --git a/pose-widget/pose-widget.cpp b/pose-widget/pose-widget.cpp
index a7da830a..f237b0ba 100644
--- a/pose-widget/pose-widget.cpp
+++ b/pose-widget/pose-widget.cpp
@@ -288,6 +288,7 @@ void pose_transform::project_quad_texture()
vec2 pos(x, y);
vec2 uv;
int i;
+
if (t.barycentric_coords(pos, uv, i))
{
const float fx = origs[i][0].x()
@@ -297,51 +298,45 @@ void pose_transform::project_quad_texture()
+ uv.x() * origs[i][2].y()
+ uv.y() * origs[i][1].y();
- const int px_ = fx + 1;
- const int py_ = fy + 1;
- const int px = fx;
- const int py = fy;
- const float ax_ = fx - px;
- const float ay_ = fy - py;
+ using uc = unsigned char;
+
+ const float ax_ = fx - unsigned(fx);
+ const float ay_ = fy - unsigned(fy);
const float ax = 1 - ax_;
const float ay = 1 - ay_;
- // 0, 0 -- ax, ay
- const unsigned orig_pos = py * orig_pitch + px * orig_depth;
- const unsigned r = orig[orig_pos + 2];
- const unsigned g = orig[orig_pos + 1];
- const unsigned b = orig[orig_pos + 0];
+ const unsigned px_ = fx + 1;
+ const unsigned py_ = fy + 1;
+ const unsigned px = fx;
+ const unsigned py = fy;
- // 1, 1 -- ax_, ay_
+ const unsigned orig_pos = py * orig_pitch + px * orig_depth;
const unsigned orig_pos_ = py_ * orig_pitch + px_ * orig_depth;
- const unsigned r_ = orig[orig_pos_ + 2];
- const unsigned g_ = orig[orig_pos_ + 1];
- const unsigned b_ = orig[orig_pos_ + 0];
-
- // 1, 0 -- ax_, ay
const unsigned orig_pos__ = py * orig_pitch + px_ * orig_depth;
- const unsigned r__ = orig[orig_pos__ + 2];
- const unsigned g__ = orig[orig_pos__ + 1];
- const unsigned b__ = orig[orig_pos__ + 0];
-
- // 0, 1 -- ax, ay_
const unsigned orig_pos___ = py_ * orig_pitch + px * orig_depth;
- const unsigned r___ = orig[orig_pos___ + 2];
- const unsigned g___ = orig[orig_pos___ + 1];
- const unsigned b___ = orig[orig_pos___ + 0];
- const unsigned a1 = orig[orig_pos + 3];
- const unsigned a2 = orig[orig_pos_ + 3];
- const unsigned a3 = orig[orig_pos__ + 3];
- const unsigned a4 = orig[orig_pos___ + 3];
+ const uc a1 = orig[orig_pos + 3];
+ const uc a2 = orig[orig_pos_ + 3];
+ const uc a3 = orig[orig_pos__ + 3];
+ const uc a4 = orig[orig_pos___ + 3];
+
+ // 1, 0 -- ax_, ay
+ // 0, 1 -- ax, ay_
+ // 1, 1 -- ax_, ay_
+ // 0, 0 -- ax, ay
+ const uc alpha = (a1 * ax + a3 * ax_) * ay + (a4 * ax + a2 * ax_) * ay_;
const unsigned pos = y * dest_pitch + x * dest_depth;
- const unsigned alpha = (a1 * ax + a3 * ax_) * ay + (a4 * ax + a2 * ax_) * ay_;
+ for (unsigned k = 0; k < 3; k++)
+ {
+ const uc i = orig[orig_pos + k];
+ const uc i_ = orig[orig_pos_ + k];
+ const uc i__ = orig[orig_pos__ + k];
+ const uc i___ = orig[orig_pos___ + k];
- dest[pos + 2] = unsigned((r * ax + r__ * ax_) * ay + (r___ * ax + r_ * ax_) * ay_)*alpha / 255;
- dest[pos + 1] = unsigned((g * ax + g__ * ax_) * ay + (g___ * ax + g_ * ax_) * ay_)*alpha / 255;
- dest[pos + 0] = unsigned((b * ax + b__ * ax_) * ay + (b___ * ax + b_ * ax_) * ay_)*alpha / 255;
+ dest[pos + k] = unsigned((i * ax + i__ * ax_) * ay + (i___ * ax + i_ * ax_) * ay_)*alpha / 255;
+ }
dest[pos + 3] = alpha;
}