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soft shadows working better after replacing M_2_PI with 2.0 * M_PI since M_2_PI is 2/pi, not 2*pi...

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git-svn-id: svn://anubis/fart/trunk@258 7f9b0f55-74a9-4bce-be96-3c2cd072584d
This commit is contained in:
Josh Holtrop 2010-06-29 14:59:44 +00:00
parent 57a4e6ed8a
commit 7fdb084aad
2 changed files with 3 additions and 7 deletions
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6
main/Scene.cc
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@ -232,16 +232,12 @@ Color Scene::computePhong(const refptr<Material> material,
int jitter_samples = 0, jitter_level = (*it)->getJitter();; int jitter_samples = 0, jitter_level = (*it)->getJitter();;
for (int jitter_index = 0; jitter_index < jitter_level; jitter_index++) for (int jitter_index = 0; jitter_index < jitter_level; jitter_index++)
{ {
#if 0
double offset = ((double)rand()) / RAND_MAX * M_2_PI;
#endif
double offset = 0.0;
double jitterRadius = jitter_index * lightRadius double jitterRadius = jitter_index * lightRadius
/ (jitter_level - 0.5); / (jitter_level - 0.5);
for (int i = 0, num = (int) (M_PI * jitter_index) + 1; i < num; i++) for (int i = 0, num = (int) (M_PI * jitter_index) + 1; i < num; i++)
{ {
jitter_samples++; jitter_samples++;
double jitter_angle = offset + i * M_2_PI / num; double jitter_angle = i * 2.0 * M_PI / num;
Vector jitterPosition = lightC Vector jitterPosition = lightC
+ lightPlaneX * jitterRadius * cos(jitter_angle) + lightPlaneX * jitterRadius * cos(jitter_angle)
+ lightPlaneY * jitterRadius * sin(jitter_angle); + lightPlaneY * jitterRadius * sin(jitter_angle);

4
scenes/subtract-subtract.fart
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@ -14,8 +14,8 @@ scene
light light
{ {
position <-1, -3, 4> position <-5, -15, 20>
jitter 3 jitter 5
} }
plane plane