mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2026-02-04 14:24:53 +08:00
Scale mix for path constraints.
This commit is contained in:
NathanSweet
parent
05b3e66dc0
commit
cdbc878f31
@ -874,20 +874,23 @@ public class Animation {
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}
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static public class PathConstraintTimeline extends CurveTimeline {
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static private final int PREV_TIME = -4;
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static private final int PREV_POSITION = -3;
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static private final int PREV_ROTATE_MIX = -2;
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static private final int PREV_TRANSLATE_MIX = -1;
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static private final int PREV_TIME = -5;
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static private final int PREV_POSITION = -4;
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static private final int PREV_ROTATE_MIX = -3;
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static private final int PREV_TRANSLATE_MIX = -2;
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static private final int PREV_SCALE_MIX = -1;
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static private final int POSITION = 1;
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static private final int ROTATE_MIX = 2;
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static private final int TRANSLATE_MIX = 3;
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static private final int SCALE_MIX = 4;
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int pathConstraintIndex;
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private final float[] frames; // time, rotate mix, translate mix, scale mix, shear mix, ...
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public PathConstraintTimeline (int frameCount) {
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super(frameCount);
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frames = new float[frameCount * 4];
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frames = new float[frameCount * 5];
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}
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public void setPathConstraintIndex (int index) {
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@ -903,12 +906,13 @@ public class Animation {
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}
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/** Sets the time, position, and mixes of the specified keyframe. */
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public void setFrame (int frameIndex, float time, float position, float rotateMix, float translateMix) {
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frameIndex *= 4;
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public void setFrame (int frameIndex, float time, float position, float rotateMix, float translateMix, float scaleMix) {
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frameIndex *= 5;
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frames[frameIndex] = time;
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frames[frameIndex + 1] = position;
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frames[frameIndex + 2] = rotateMix;
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frames[frameIndex + 3] = translateMix;
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frames[frameIndex + 4] = scaleMix;
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}
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public void apply (Skeleton skeleton, float lastTime, float time, Array<Event> events, float alpha) {
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@ -917,27 +921,30 @@ public class Animation {
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PathConstraint constraint = skeleton.pathConstraints.get(pathConstraintIndex);
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if (time >= frames[frames.length - 4]) { // Time is after last frame.
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if (time >= frames[frames.length - 5]) { // Time is after last frame.
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int i = frames.length - 1;
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constraint.position += (frames[i - 2] - constraint.position) * alpha;
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constraint.rotateMix += (frames[i - 1] - constraint.rotateMix) * alpha;
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constraint.translateMix += (frames[i] - constraint.translateMix) * alpha;
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constraint.position += (frames[i - 3] - constraint.position) * alpha;
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constraint.rotateMix += (frames[i - 2] - constraint.rotateMix) * alpha;
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constraint.translateMix += (frames[i - 1] - constraint.translateMix) * alpha;
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constraint.scaleMix += (frames[i] - constraint.scaleMix) * alpha;
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return;
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}
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// Interpolate between the previous frame and the current frame.
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int frame = binarySearch(frames, time, 4);
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int frame = binarySearch(frames, time, 5);
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float frameTime = frames[frame];
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float percent = MathUtils.clamp(1 - (time - frameTime) / (frames[frame + PREV_TIME] - frameTime), 0, 1);
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percent = getCurvePercent(frame / 4 - 1, percent);
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percent = getCurvePercent(frame / 5 - 1, percent);
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float position = frames[frame + PREV_POSITION];
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float rotate = frames[frame + PREV_ROTATE_MIX];
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float translate = frames[frame + PREV_TRANSLATE_MIX];
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float scale = frames[frame + PREV_SCALE_MIX];
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constraint.position += (position + (frames[frame + POSITION] - position) * percent - constraint.position) * alpha;
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constraint.rotateMix += (rotate + (frames[frame + ROTATE_MIX] - rotate) * percent - constraint.rotateMix) * alpha;
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constraint.translateMix += (translate + (frames[frame + TRANSLATE_MIX] - translate) * percent - constraint.translateMix)
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* alpha;
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constraint.scaleMix += (scale + (frames[frame + SCALE_MIX] - scale) * percent - constraint.scaleMix) * alpha;
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}
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}
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}
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@ -3,7 +3,6 @@ package com.esotericsoftware.spine;
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import static com.badlogic.gdx.math.MathUtils.*;
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import com.badlogic.gdx.math.Vector2;
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import com.badlogic.gdx.utils.Array;
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import com.badlogic.gdx.utils.FloatArray;
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import com.esotericsoftware.spine.attachments.Attachment;
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@ -13,15 +12,16 @@ public class PathConstraint implements Updatable {
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final PathConstraintData data;
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final Array<Bone> bones;
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Slot target;
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float position, rotateMix, translateMix;
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float position, rotateMix, translateMix, scaleMix;
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final FloatArray lengths = new FloatArray(), positions = new FloatArray();
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final Vector2 temp = new Vector2();
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final FloatArray worldVertices = new FloatArray(), temp = new FloatArray();
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public PathConstraint (PathConstraintData data, Skeleton skeleton) {
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this.data = data;
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position = data.position;
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rotateMix = data.rotateMix;
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translateMix = data.translateMix;
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scaleMix = data.scaleMix;
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bones = new Array(data.bones.size);
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for (BoneData boneData : data.bones)
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@ -40,6 +40,7 @@ public class PathConstraint implements Updatable {
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position = constraint.position;
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rotateMix = constraint.rotateMix;
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translateMix = constraint.translateMix;
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scaleMix = constraint.scaleMix;
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}
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public void apply () {
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@ -50,12 +51,12 @@ public class PathConstraint implements Updatable {
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Attachment attachment = target.getAttachment();
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if (!(attachment instanceof PathAttachment)) return;
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float translateMix = this.translateMix, rotateMix = this.rotateMix;
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boolean translate = translateMix > 0, rotate = rotateMix > 0;
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float rotateMix = this.rotateMix, translateMix = this.translateMix, scaleMix = this.scaleMix;
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boolean translate = translateMix > 0, rotate = rotateMix > 0, scale = scaleMix > 0;
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if (!translate && !rotate) return;
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PathAttachment path = (PathAttachment)attachment;
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FloatArray lengths = this.lengths, positions = this.positions;
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FloatArray lengths = this.lengths;
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lengths.clear();
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lengths.add(0);
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positions.clear();
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@ -63,7 +64,7 @@ public class PathConstraint implements Updatable {
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Array<Bone> bones = this.bones;
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int boneCount = bones.size;
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if (boneCount == 1) {
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path.computeWorldPositions(target, position, lengths, positions, rotate);
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computeWorldPositions(path, rotate);
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Bone bone = bones.first();
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bone.worldX += (positions.first() - bone.worldX) * translateMix;
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bone.worldY += (positions.get(1) - bone.worldY) * translateMix;
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@ -85,22 +86,39 @@ public class PathConstraint implements Updatable {
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for (int i = 0; i < boneCount; i++)
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lengths.add(bones.get(i).data.length);
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path.computeWorldPositions(target, position, lengths, positions, false);
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computeWorldPositions(path, false);
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Vector2 temp = this.temp;
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float boneX = positions.first(), boneY = positions.get(1);
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float[] positions = this.positions.items;
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float boneX = positions[0], boneY = positions[1];
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for (int i = 0, p = 2; i < boneCount; i++, p += 2) {
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Bone bone = bones.get(i);
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float x = positions[p], y = positions[p + 1];
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if (scale) {
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float dx = boneX - x, dy = boneY - y, d = (float)Math.sqrt(dx * dx + dy * dy);
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// BOZO - Length not transformed by bone matrix.
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float sx = bone.scaleX + (d / bone.data.length - bone.scaleX) * scaleMix;
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bone.a *= sx;
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bone.c *= sx;
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}
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bone.worldX += (boneX - bone.worldX) * translateMix;
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bone.worldY += (boneY - bone.worldY) * translateMix;
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float x = positions.get(p), y = positions.get(p + 1);
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float r = atan2(y - boneY, x - boneX) + data.offsetRotation * degRad;
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if (data.offsetRotation != 0) {
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boneX = x;
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boneY = y;
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} else {
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// BOZO - Doesn't transform by bone matrix.
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float cos = cos(r), sin = sin(r);
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float length = bone.data.length, mix = rotateMix * (1 - scaleMix);
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boneX = x + (length * cos + boneX - x) * mix;
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boneY = y + (length * sin + boneY - y) * mix;
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}
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if (rotate) {
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// Scale.
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// float dist = (float)Math.sqrt((boneX - x) * (boneX - x) + (boneY - y) * (boneY - y));
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// bone.scaleX = dist / bone.data.length;
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float a = bone.a, b = bone.b, c = bone.c, d = bone.d;
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float r = atan2(y - boneY, x - boneX) - atan2(c, a) + data.offsetRotation * degRad;
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r -= atan2(c, a);
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if (r > PI)
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r -= PI2;
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else if (r < -PI) r += PI2;
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@ -110,22 +128,214 @@ public class PathConstraint implements Updatable {
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bone.b = cos * b - sin * d;
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bone.c = sin * a + cos * c;
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bone.d = sin * b + cos * d;
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if (data.offsetRotation == 0 && rotateMix == 1) {
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// Place at tip.
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bone.localToWorld(temp.set(bone.data.length, 0));
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boneX = temp.x;
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boneY = temp.y;
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}
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}
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}
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private void computeWorldPositions (PathAttachment path, boolean tangents) {
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Slot slot = target;
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float position = this.position;
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FloatArray out = positions;
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FloatArray lengths = this.lengths;
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int verticesLength = path.getWorldVerticesLength(), curves = verticesLength / 6;
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boolean closed = path.getClosed();
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float[] vertices;
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if (!path.getConstantSpeed()) {
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if (!closed) curves--;
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float pathLength = path.getLength();
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vertices = worldVertices.setSize(8);
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for (int i = 0, n = lengths.size; i < n; i++) {
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position += lengths.get(i) / pathLength;
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if (closed) {
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position %= 1;
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if (position < 0) position += 1;
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} else if (position < 0 || position > 1) {
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path.computeWorldVertices(slot, 0, 4, vertices, 0);
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path.computeWorldVertices(slot, verticesLength - 4, 4, vertices, 4);
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addOutsidePoint(position * pathLength, vertices, 8, pathLength, out, tangents);
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continue;
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}
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int curve = position < 1 ? (int)(curves * position) : curves - 1;
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if (closed && curve == curves - 1) {
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path.computeWorldVertices(slot, verticesLength - 4, 4, vertices, 0);
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path.computeWorldVertices(slot, 0, 4, vertices, 4);
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} else
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path.computeWorldVertices(slot, curve * 6 + 2, 8, vertices, 0);
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addCurvePoint(vertices[0], vertices[1], vertices[2], vertices[3], vertices[4], vertices[5], vertices[6], vertices[7],
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(position - curve / (float)curves) * curves, tangents, out);
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}
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return;
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}
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if (closed) {
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verticesLength += 2;
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vertices = worldVertices.setSize(verticesLength);
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path.computeWorldVertices(slot, 2, verticesLength - 4, vertices, 0);
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path.computeWorldVertices(slot, 0, 2, vertices, verticesLength - 4);
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vertices[verticesLength - 2] = vertices[0];
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vertices[verticesLength - 1] = vertices[1];
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} else {
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// Place on path.
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boneX = x;
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boneY = y;
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verticesLength -= 4;
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vertices = worldVertices.setSize(verticesLength);
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path.computeWorldVertices(slot, 2, verticesLength, vertices, 0);
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}
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// Curve lengths.
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temp.setSize(10 + curves); // BOZO - Combine with worldVertices?
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float[] temp = this.temp.items;
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float pathLength = 0, x1 = vertices[0], y1 = vertices[1], cx1, cy1, cx2, cy2, x2, y2;
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float tmpx, tmpy, dddfx, dddfy, ddfx, ddfy, dfx, dfy;
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for (int i = 10, w = 2; w < verticesLength; i++, w += 6) {
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cx1 = vertices[w];
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cy1 = vertices[w + 1];
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cx2 = vertices[w + 2];
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cy2 = vertices[w + 3];
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x2 = vertices[w + 4];
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y2 = vertices[w + 5];
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tmpx = (x1 - cx1 * 2 + cx2) * 0.1875f;
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tmpy = (y1 - cy1 * 2 + cy2) * 0.1875f;
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dddfx = ((cx1 - cx2) * 3 - x1 + x2) * 0.09375f;
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dddfy = ((cy1 - cy2) * 3 - y1 + y2) * 0.09375f;
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ddfx = tmpx * 2 + dddfx;
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ddfy = tmpy * 2 + dddfy;
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dfx = (cx1 - x1) * 0.75f + tmpx + dddfx * 0.16666667f;
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dfy = (cy1 - y1) * 0.75f + tmpy + dddfy * 0.16666667f;
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pathLength += (float)Math.sqrt(dfx * dfx + dfy * dfy);
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dfx += ddfx;
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dfy += ddfy;
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ddfx += dddfx;
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ddfy += dddfy;
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pathLength += (float)Math.sqrt(dfx * dfx + dfy * dfy);
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dfx += ddfx;
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dfy += ddfy;
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pathLength += (float)Math.sqrt(dfx * dfx + dfy * dfy);
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dfx += ddfx + dddfx;
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dfy += ddfy + dddfy;
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pathLength += (float)Math.sqrt(dfx * dfx + dfy * dfy);
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temp[i] = pathLength;
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x1 = x2;
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y1 = y2;
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}
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position *= pathLength;
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for (int i = 0, n = lengths.size; i < n; i++) {
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position += lengths.get(i);
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float p = position;
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if (closed) {
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p %= pathLength;
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if (p < 0) p += pathLength;
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} else if (p < 0 || p > pathLength) {
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addOutsidePoint(p, vertices, verticesLength, pathLength, out, tangents);
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continue;
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}
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// Determine curve containing position.
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int curve;
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float length = temp[10];
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if (p <= length) {
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curve = 0;
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p /= length;
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} else {
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// Place on path.
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boneX = x;
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boneY = y;
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for (curve = 11;; curve++) {
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length = temp[curve];
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if (p <= length) {
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float prev = temp[curve - 1];
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p = (p - prev) / (length - prev);
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break;
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}
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}
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curve = (curve - 10) * 6;
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}
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// Curve segment lengths.
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x1 = vertices[curve];
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y1 = vertices[curve + 1];
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cx1 = vertices[curve + 2];
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cy1 = vertices[curve + 3];
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cx2 = vertices[curve + 4];
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cy2 = vertices[curve + 5];
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x2 = vertices[curve + 6];
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y2 = vertices[curve + 7];
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tmpx = (x1 - cx1 * 2 + cx2) * 0.03f;
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tmpy = (y1 - cy1 * 2 + cy2) * 0.03f;
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dddfx = ((cx1 - cx2) * 3 - x1 + x2) * 0.006f;
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dddfy = ((cy1 - cy2) * 3 - y1 + y2) * 0.006f;
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ddfx = tmpx * 2 + dddfx;
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ddfy = tmpy * 2 + dddfy;
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dfx = (cx1 - x1) * 0.3f + tmpx + dddfx * 0.16666667f;
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dfy = (cy1 - y1) * 0.3f + tmpy + dddfy * 0.16666667f;
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length = (float)Math.sqrt(dfx * dfx + dfy * dfy);
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temp[0] = length;
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for (int ii = 1; ii < 8; ii++) {
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dfx += ddfx;
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dfy += ddfy;
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ddfx += dddfx;
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ddfy += dddfy;
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length += (float)Math.sqrt(dfx * dfx + dfy * dfy);
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temp[ii] = length;
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}
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dfx += ddfx;
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dfy += ddfy;
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length += (float)Math.sqrt(dfx * dfx + dfy * dfy);
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temp[8] = length;
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dfx += ddfx + dddfx;
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dfy += ddfy + dddfy;
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length += (float)Math.sqrt(dfx * dfx + dfy * dfy);
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temp[9] = length;
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// Weight by segment length.
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p *= length;
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length = temp[0];
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if (p <= length)
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p = 0.1f * p / length;
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else {
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for (int ii = 1;; ii++) {
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length = temp[ii];
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if (p <= length) {
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float prev = temp[ii - 1];
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p = 0.1f * (ii + (p - prev) / (length - prev));
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break;
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}
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}
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}
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addCurvePoint(x1, y1, cx1, cy1, cx2, cy2, x2, y2, p, tangents, out);
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}
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}
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private void addOutsidePoint (float position, float[] vertices, int verticesLength, float pathLength, FloatArray out,
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boolean tangents) {
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float x1, y1, x2, y2;
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if (position < 0) {
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x1 = vertices[0];
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y1 = vertices[1];
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x2 = vertices[2] - x1;
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y2 = vertices[3] - y1;
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} else {
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x1 = vertices[verticesLength - 2];
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y1 = vertices[verticesLength - 1];
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x2 = x1 - vertices[verticesLength - 4];
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y2 = y1 - vertices[verticesLength - 3];
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position -= pathLength;
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}
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float r = atan2(y2, x2);
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out.add(x1 + position * cos(r));
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out.add(y1 + position * sin(r));
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if (tangents) out.add(r + PI);
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}
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private void addCurvePoint (float x1, float y1, float cx1, float cy1, float cx2, float cy2, float x2, float y2, float position,
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boolean tangents, FloatArray out) {
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if (position == 0) position = 0.0001f;
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float tt = position * position, ttt = tt * position, u = 1 - position, uu = u * u, uuu = uu * u;
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float ut = u * position, ut3 = ut * 3, uut3 = u * ut3, utt3 = ut3 * position;
|
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float x = x1 * uuu + cx1 * uut3 + cx2 * utt3 + x2 * ttt, y = y1 * uuu + cy1 * uut3 + cy2 * utt3 + y2 * ttt;
|
||||
out.add(x);
|
||||
out.add(y);
|
||||
if (tangents) out.add(atan2(y - (y1 * uu + cy1 * ut * 2 + cy2 * tt), x - (x1 * uu + cx1 * ut * 2 + cx2 * tt)));
|
||||
}
|
||||
|
||||
public float getPosition () {
|
||||
@ -152,6 +362,14 @@ public class PathConstraint implements Updatable {
|
||||
this.translateMix = translateMix;
|
||||
}
|
||||
|
||||
public float getScaleMix () {
|
||||
return scaleMix;
|
||||
}
|
||||
|
||||
public void setScaleMix (float scaleMix) {
|
||||
this.scaleMix = scaleMix;
|
||||
}
|
||||
|
||||
public Array<Bone> getBones () {
|
||||
return bones;
|
||||
}
|
||||
|
||||
@ -7,7 +7,7 @@ public class PathConstraintData {
|
||||
final String name;
|
||||
final Array<BoneData> bones = new Array();
|
||||
SlotData target;
|
||||
float position, rotateMix, translateMix;
|
||||
float position, rotateMix, translateMix, scaleMix;
|
||||
float offsetRotation;
|
||||
|
||||
public PathConstraintData (String name) {
|
||||
@ -50,6 +50,14 @@ public class PathConstraintData {
|
||||
this.translateMix = translateMix;
|
||||
}
|
||||
|
||||
public float getScaleMix () {
|
||||
return scaleMix;
|
||||
}
|
||||
|
||||
public void setScaleMix (float scaleMix) {
|
||||
this.scaleMix = scaleMix;
|
||||
}
|
||||
|
||||
public float getOffsetRotation () {
|
||||
return offsetRotation;
|
||||
}
|
||||
|
||||
@ -227,6 +227,7 @@ public class Skeleton {
|
||||
constraint.position = data.position;
|
||||
constraint.rotateMix = data.rotateMix;
|
||||
constraint.translateMix = data.translateMix;
|
||||
constraint.scaleMix = data.scaleMix;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -217,6 +217,7 @@ public class SkeletonBinary {
|
||||
data.position = input.readFloat();
|
||||
data.rotateMix = input.readFloat();
|
||||
data.translateMix = input.readFloat();
|
||||
data.scaleMix = input.readFloat();
|
||||
skeletonData.pathConstraints.add(data);
|
||||
}
|
||||
|
||||
@ -588,11 +589,12 @@ public class SkeletonBinary {
|
||||
PathConstraintTimeline timeline = new PathConstraintTimeline(frameCount);
|
||||
timeline.pathConstraintIndex = index;
|
||||
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++) {
|
||||
timeline.setFrame(frameIndex, input.readFloat(), input.readFloat(), input.readFloat(), input.readFloat());
|
||||
timeline.setFrame(frameIndex, input.readFloat(), input.readFloat(), input.readFloat(), input.readFloat(),
|
||||
input.readFloat());
|
||||
if (frameIndex < frameCount - 1) readCurve(input, frameIndex, timeline);
|
||||
}
|
||||
timelines.add(timeline);
|
||||
duration = Math.max(duration, timeline.getFrames()[frameCount * 4 - 4]);
|
||||
duration = Math.max(duration, timeline.getFrames()[frameCount * 5 - 5]);
|
||||
}
|
||||
|
||||
// Deform timelines.
|
||||
|
||||
@ -199,6 +199,7 @@ public class SkeletonJson {
|
||||
data.position = constraintMap.getFloat("position", 0);
|
||||
data.rotateMix = constraintMap.getFloat("rotateMix", 1);
|
||||
data.translateMix = constraintMap.getFloat("translateMix", 1);
|
||||
data.scaleMix = constraintMap.getFloat("scaleMix", 1);
|
||||
|
||||
skeletonData.pathConstraints.add(data);
|
||||
}
|
||||
@ -506,12 +507,12 @@ public class SkeletonJson {
|
||||
int frameIndex = 0;
|
||||
for (JsonValue valueMap = constraintMap.child; valueMap != null; valueMap = valueMap.next) {
|
||||
timeline.setFrame(frameIndex, valueMap.getFloat("time"), valueMap.getFloat("scaleMix", 1),
|
||||
valueMap.getFloat("rotateMix", 1), valueMap.getFloat("translateMix", 1));
|
||||
valueMap.getFloat("rotateMix", 1), valueMap.getFloat("translateMix", 1), valueMap.getFloat("scaleMix", 1));
|
||||
readCurve(valueMap, timeline, frameIndex);
|
||||
frameIndex++;
|
||||
}
|
||||
timelines.add(timeline);
|
||||
duration = Math.max(duration, timeline.getFrames()[timeline.getFrameCount() * 4 - 4]);
|
||||
duration = Math.max(duration, timeline.getFrames()[timeline.getFrameCount() * 5 - 5]);
|
||||
}
|
||||
|
||||
// Deform timelines.
|
||||
|
||||
@ -31,19 +31,16 @@
|
||||
|
||||
package com.esotericsoftware.spine.attachments;
|
||||
|
||||
import static com.badlogic.gdx.math.MathUtils.*;
|
||||
|
||||
import com.badlogic.gdx.graphics.Color;
|
||||
import com.badlogic.gdx.utils.FloatArray;
|
||||
import com.esotericsoftware.spine.Slot;
|
||||
|
||||
public class PathAttachment extends VertexAttachment {
|
||||
float length;
|
||||
boolean closed, constantSpeed;
|
||||
|
||||
// Nonessential.
|
||||
final Color color = new Color(1, 0.5f, 0, 1);
|
||||
|
||||
float[] worldVertices, temp;
|
||||
boolean closed, constantSpeed;
|
||||
|
||||
public PathAttachment (String name) {
|
||||
super(name);
|
||||
}
|
||||
@ -52,201 +49,8 @@ public class PathAttachment extends VertexAttachment {
|
||||
super.computeWorldVertices(slot, worldVertices);
|
||||
}
|
||||
|
||||
public void computeWorldPositions (Slot slot, float position, FloatArray lengths, FloatArray out, boolean tangents) {
|
||||
float[] vertices = this.worldVertices;
|
||||
int verticesLength = worldVerticesLength;
|
||||
int curves = verticesLength / 6;
|
||||
|
||||
if (!constantSpeed) {
|
||||
for (int i = 0, n = lengths.size; i < n; i++) {
|
||||
// BOZO - Wrong. Use path length property to give !constantSpeed paths support for oob and multiple bones?
|
||||
position += lengths.get(i);
|
||||
if (closed) {
|
||||
position %= 1;
|
||||
if (position < 0) position += 1;
|
||||
} else {
|
||||
position = clamp(position, 0, 1);
|
||||
curves--;
|
||||
}
|
||||
int curve = position < 1 ? (int)(curves * position) : curves - 1;
|
||||
position = (position - curve / (float)curves) * curves;
|
||||
|
||||
if (closed && curve == curves - 1) {
|
||||
super.computeWorldVertices(slot, curves * 6 - 4, 4, vertices, 0);
|
||||
super.computeWorldVertices(slot, 0, 4, vertices, 4);
|
||||
} else
|
||||
super.computeWorldVertices(slot, curve * 6 + 2, 8, vertices, 0);
|
||||
|
||||
addPoint(vertices[0], vertices[1], vertices[2], vertices[3], vertices[4], vertices[5], vertices[6], vertices[7],
|
||||
position, tangents, out);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if (closed) {
|
||||
super.computeWorldVertices(slot, 2, verticesLength - 2, vertices, 0);
|
||||
super.computeWorldVertices(slot, 0, 2, vertices, verticesLength - 2);
|
||||
vertices[verticesLength] = vertices[0];
|
||||
vertices[verticesLength + 1] = vertices[1];
|
||||
verticesLength += 2;
|
||||
} else {
|
||||
verticesLength -= 4;
|
||||
super.computeWorldVertices(slot, 2, verticesLength, vertices, 0);
|
||||
}
|
||||
|
||||
// Curve lengths.
|
||||
float[] temp = this.temp;
|
||||
float pathLength = 0, x1 = vertices[0], y1 = vertices[1], cx1, cy1, cx2, cy2, x2, y2;
|
||||
float tmpx, tmpy, dddfx, dddfy, ddfx, ddfy, dfx, dfy;
|
||||
for (int i = 10, w = 2; w < verticesLength; i++, w += 6) {
|
||||
cx1 = vertices[w];
|
||||
cy1 = vertices[w + 1];
|
||||
cx2 = vertices[w + 2];
|
||||
cy2 = vertices[w + 3];
|
||||
x2 = vertices[w + 4];
|
||||
y2 = vertices[w + 5];
|
||||
tmpx = (x1 - cx1 * 2 + cx2) * 0.1875f;
|
||||
tmpy = (y1 - cy1 * 2 + cy2) * 0.1875f;
|
||||
dddfx = ((cx1 - cx2) * 3 - x1 + x2) * 0.09375f;
|
||||
dddfy = ((cy1 - cy2) * 3 - y1 + y2) * 0.09375f;
|
||||
ddfx = tmpx * 2 + dddfx;
|
||||
ddfy = tmpy * 2 + dddfy;
|
||||
dfx = (cx1 - x1) * 0.75f + tmpx + dddfx * 0.16666667f;
|
||||
dfy = (cy1 - y1) * 0.75f + tmpy + dddfy * 0.16666667f;
|
||||
pathLength += (float)Math.sqrt(dfx * dfx + dfy * dfy);
|
||||
dfx += ddfx;
|
||||
dfy += ddfy;
|
||||
ddfx += dddfx;
|
||||
ddfy += dddfy;
|
||||
pathLength += (float)Math.sqrt(dfx * dfx + dfy * dfy);
|
||||
dfx += ddfx;
|
||||
dfy += ddfy;
|
||||
pathLength += (float)Math.sqrt(dfx * dfx + dfy * dfy);
|
||||
dfx += ddfx + dddfx;
|
||||
dfy += ddfy + dddfy;
|
||||
pathLength += (float)Math.sqrt(dfx * dfx + dfy * dfy);
|
||||
temp[i] = pathLength;
|
||||
x1 = x2;
|
||||
y1 = y2;
|
||||
}
|
||||
position *= pathLength;
|
||||
|
||||
for (int i = 0, n = lengths.size; i < n; i++) {
|
||||
position += lengths.get(i);
|
||||
float p = position;
|
||||
|
||||
if (closed) {
|
||||
p %= pathLength;
|
||||
if (p < 0) p += pathLength;
|
||||
} else if (p < 0 || p > pathLength) {
|
||||
// Outside path.
|
||||
if (p < 0) {
|
||||
x1 = vertices[0];
|
||||
y1 = vertices[1];
|
||||
cx1 = vertices[2] - x1;
|
||||
cy1 = vertices[3] - y1;
|
||||
} else {
|
||||
x1 = vertices[verticesLength - 2];
|
||||
y1 = vertices[verticesLength - 1];
|
||||
cx1 = x1 - vertices[verticesLength - 4];
|
||||
cy1 = y1 - vertices[verticesLength - 3];
|
||||
p -= pathLength;
|
||||
}
|
||||
float r = atan2(cy1, cx1);
|
||||
out.add(x1 + p * cos(r));
|
||||
out.add(y1 + p * sin(r));
|
||||
if (tangents) out.add(r + PI);
|
||||
continue;
|
||||
}
|
||||
|
||||
// Determine curve containing position.
|
||||
int curve;
|
||||
float length = temp[10];
|
||||
if (p <= length) {
|
||||
curve = 0;
|
||||
p /= length;
|
||||
} else {
|
||||
for (curve = 11;; curve++) {
|
||||
length = temp[curve];
|
||||
if (p <= length) {
|
||||
float prev = temp[curve - 1];
|
||||
p = (p - prev) / (length - prev);
|
||||
break;
|
||||
}
|
||||
}
|
||||
curve = (curve - 10) * 6;
|
||||
}
|
||||
|
||||
// Curve segment lengths.
|
||||
x1 = vertices[curve];
|
||||
y1 = vertices[curve + 1];
|
||||
cx1 = vertices[curve + 2];
|
||||
cy1 = vertices[curve + 3];
|
||||
cx2 = vertices[curve + 4];
|
||||
cy2 = vertices[curve + 5];
|
||||
x2 = vertices[curve + 6];
|
||||
y2 = vertices[curve + 7];
|
||||
tmpx = (x1 - cx1 * 2 + cx2) * 0.03f;
|
||||
tmpy = (y1 - cy1 * 2 + cy2) * 0.03f;
|
||||
dddfx = ((cx1 - cx2) * 3 - x1 + x2) * 0.006f;
|
||||
dddfy = ((cy1 - cy2) * 3 - y1 + y2) * 0.006f;
|
||||
ddfx = tmpx * 2 + dddfx;
|
||||
ddfy = tmpy * 2 + dddfy;
|
||||
dfx = (cx1 - x1) * 0.3f + tmpx + dddfx * 0.16666667f;
|
||||
dfy = (cy1 - y1) * 0.3f + tmpy + dddfy * 0.16666667f;
|
||||
length = (float)Math.sqrt(dfx * dfx + dfy * dfy);
|
||||
// BOZO! - Don't overwrite curve lengths with segment lengths.
|
||||
temp[0] = length;
|
||||
for (int ii = 1; ii < 8; ii++) {
|
||||
dfx += ddfx;
|
||||
dfy += ddfy;
|
||||
ddfx += dddfx;
|
||||
ddfy += dddfy;
|
||||
length += (float)Math.sqrt(dfx * dfx + dfy * dfy);
|
||||
temp[ii] = length;
|
||||
}
|
||||
dfx += ddfx;
|
||||
dfy += ddfy;
|
||||
length += (float)Math.sqrt(dfx * dfx + dfy * dfy);
|
||||
temp[8] = length;
|
||||
dfx += ddfx + dddfx;
|
||||
dfy += ddfy + dddfy;
|
||||
length += (float)Math.sqrt(dfx * dfx + dfy * dfy);
|
||||
temp[9] = length;
|
||||
|
||||
// Weight by segment length.
|
||||
p *= length;
|
||||
length = temp[0];
|
||||
if (p <= length)
|
||||
p = 0.1f * p / length;
|
||||
else {
|
||||
for (int ii = 1;; ii++) {
|
||||
length = temp[ii];
|
||||
if (p <= length) {
|
||||
float prev = temp[ii - 1];
|
||||
p = 0.1f * (ii + (p - prev) / (length - prev));
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
addPoint(x1, y1, cx1, cy1, cx2, cy2, x2, y2, p, tangents, out);
|
||||
}
|
||||
}
|
||||
|
||||
private void addPoint (float x1, float y1, float cx1, float cy1, float cx2, float cy2, float x2, float y2, float position,
|
||||
boolean tangents, FloatArray out) {
|
||||
if (position == 0) position = 0.0001f;
|
||||
float tt = position * position, ttt = tt * position, u = 1 - position, uu = u * u, uuu = uu * u;
|
||||
float ut = u * position, ut3 = ut * 3, uut3 = u * ut3, utt3 = ut3 * position;
|
||||
float x = x1 * uuu + cx1 * uut3 + cx2 * utt3 + x2 * ttt, y = y1 * uuu + cy1 * uut3 + cy2 * utt3 + y2 * ttt;
|
||||
out.add(x);
|
||||
out.add(y);
|
||||
if (tangents) out.add(atan2(y - (y1 * uu + cy1 * ut * 2 + cy2 * tt), x - (x1 * uu + cx1 * ut * 2 + cx2 * tt)));
|
||||
}
|
||||
|
||||
public Color getColor () {
|
||||
return color;
|
||||
public void computeWorldVertices (Slot slot, int start, int count, float[] worldVertices, int offset) {
|
||||
super.computeWorldVertices(slot, start, count, worldVertices, offset);
|
||||
}
|
||||
|
||||
public boolean getClosed () {
|
||||
@ -265,10 +69,15 @@ public class PathAttachment extends VertexAttachment {
|
||||
this.constantSpeed = constantSpeed;
|
||||
}
|
||||
|
||||
public void setWorldVerticesLength (int worldVerticesLength) {
|
||||
super.setWorldVerticesLength(worldVerticesLength);
|
||||
// BOZO! - Share working memory?
|
||||
worldVertices = new float[Math.max(2, worldVerticesLength + 4)];
|
||||
temp = new float[10 + worldVerticesLength / 6];
|
||||
public float getLength () {
|
||||
return length;
|
||||
}
|
||||
|
||||
public void setLength (float length) {
|
||||
this.length = length;
|
||||
}
|
||||
|
||||
public Color getColor () {
|
||||
return color;
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user