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[c] Fix PathConstraint length spacing for zero length bones. See #1023.

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This commit is contained in:
badlogic 2017-10-20 11:18:52 +02:00
parent 52a300eeae
commit 299fa5dc8f
1 changed files with 11 additions and 6 deletions
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17
spine-c/spine-c/src/spine/PathConstraint.c
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@ -35,6 +35,7 @@
#define PATHCONSTRAINT_NONE -1 #define PATHCONSTRAINT_NONE -1
#define PATHCONSTRAINT_BEFORE -2 #define PATHCONSTRAINT_BEFORE -2
#define PATHCONSTRAINT_AFTER -3 #define PATHCONSTRAINT_AFTER -3
#define EPSILON 0.00001f
spPathConstraint* spPathConstraint_create (spPathConstraintData* data, const spSkeleton* skeleton) { spPathConstraint* spPathConstraint_create (spPathConstraintData* data, const spSkeleton* skeleton) {
int i; int i;
@ -113,13 +114,17 @@ void spPathConstraint_apply (spPathConstraint* self) {
lengths = self->lengths; lengths = self->lengths;
} }
for (i = 0, n = spacesCount - 1; i < n;) { for (i = 0, n = spacesCount - 1; i < n;) {
spBone* bone = bones[i]; spBone *bone = bones[i];
setupLength = bone->data->length; setupLength = bone->data->length;
if (setupLength == 0) setupLength = 0.000000001f; if (setupLength < EPSILON) {
x = setupLength * bone->a, y = setupLength * bone->c; if (scale) lengths[i] = 0;
length = SQRT(x * x + y * y); spaces[++i] = 0;
if (scale) lengths[i] = length; } else {
spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length / setupLength; x = setupLength * bone->a, y = setupLength * bone->c;
length = SQRT(x * x + y * y);
if (scale) lengths[i] = length;
spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length / setupLength;
}
} }
} else { } else {
for (i = 1; i < spacesCount; i++) { for (i = 1; i < spacesCount; i++) {