mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2026-02-07 15:54:56 +08:00
311 lines
11 KiB
C++
311 lines
11 KiB
C++
/******************************************************************************
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* Spine Runtimes License Agreement
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* Last updated April 5, 2025. Replaces all prior versions.
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*
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* Copyright (c) 2013-2025, Esoteric Software LLC
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*
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* Integration of the Spine Runtimes into software or otherwise creating
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* derivative works of the Spine Runtimes is permitted under the terms and
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* conditions of Section 2 of the Spine Editor License Agreement:
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* http://esotericsoftware.com/spine-editor-license
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*
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* Otherwise, it is permitted to integrate the Spine Runtimes into software
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* or otherwise create derivative works of the Spine Runtimes (collectively,
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* "Products"), provided that each user of the Products must obtain their own
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* Spine Editor license and redistribution of the Products in any form must
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* include this license and copyright notice.
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*
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* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
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* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include <spine/DeformTimeline.h>
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#include <spine/Event.h>
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#include <spine/Skeleton.h>
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#include <spine/VertexAttachment.h>
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#include <spine/Animation.h>
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#include <spine/Bone.h>
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#include <spine/Property.h>
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#include <spine/Slot.h>
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#include <spine/SlotData.h>
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#include <spine/SlotPose.h>
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using namespace spine;
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RTTI_IMPL(DeformTimeline, CurveTimeline)
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DeformTimeline::DeformTimeline(size_t frameCount, size_t bezierCount, int slotIndex, VertexAttachment *attachment)
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: SlotCurveTimeline(frameCount, 1, bezierCount, slotIndex), _attachment(attachment) {
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PropertyId ids[] = {((PropertyId) Property_Deform << 32) | ((slotIndex << 16 | attachment->_id) & 0xffffffff)};
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setPropertyIds(ids, 1);
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_vertices.ensureCapacity(frameCount);
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for (size_t i = 0; i < frameCount; ++i) {
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Array<float> vec;
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_vertices.add(vec);
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}
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}
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void DeformTimeline::apply(Slot &slot, SlotPose &pose, float time, float alpha, MixBlend blend) {
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Attachment *slotAttachment = pose._attachment;
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if (slotAttachment == NULL || !slotAttachment->getRTTI().instanceOf(VertexAttachment::rtti)) {
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return;
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}
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VertexAttachment *vertexAttachment = static_cast<VertexAttachment *>(slotAttachment);
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if (vertexAttachment->getTimelineAttachment() != _attachment) {
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return;
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}
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Array<float> &deformArray = pose._deform;
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if (deformArray.size() == 0) {
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blend = MixBlend_Setup;
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}
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Array<Array<float>> &vertices = _vertices;
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size_t vertexCount = vertices[0].size();
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Array<float> &frames = _frames;
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if (time < frames[0]) {
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switch (blend) {
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case MixBlend_Setup:
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deformArray.clear();
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return;
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case MixBlend_First: {
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if (alpha == 1) {
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deformArray.clear();
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return;
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}
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deformArray.setSize(vertexCount, 0);
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Array<float> &deform = deformArray;
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if (vertexAttachment->getBones().size() == 0) {
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// Unweighted vertex positions.
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Array<float> &setupVertices = vertexAttachment->getVertices();
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for (size_t i = 0; i < vertexCount; i++) deform[i] += (setupVertices[i] - deform[i]) * alpha;
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} else {
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// Weighted deform offsets.
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alpha = 1 - alpha;
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for (size_t i = 0; i < vertexCount; i++) deform[i] *= alpha;
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}
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break;
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}
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case MixBlend_Replace:
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case MixBlend_Add:
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break;
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}
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return;
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}
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deformArray.setSize(vertexCount, 0);
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Array<float> &deform = deformArray;
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if (time >= frames[frames.size() - 1]) {// Time is after last frame.
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Array<float> &lastVertices = vertices[frames.size() - 1];
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if (alpha == 1) {
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if (blend == MixBlend_Add) {
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if (vertexAttachment->getBones().size() == 0) {
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// Unweighted vertex positions, no alpha.
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Array<float> &setupVertices = vertexAttachment->getVertices();
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for (size_t i = 0; i < vertexCount; i++) deform[i] += lastVertices[i] - setupVertices[i];
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} else {
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// Weighted deform offsets, no alpha.
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for (size_t i = 0; i < vertexCount; i++) deform[i] += lastVertices[i];
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}
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} else {
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// Vertex positions or deform offsets, no alpha.
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memcpy(deform.buffer(), lastVertices.buffer(), vertexCount * sizeof(float));
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}
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} else {
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switch (blend) {
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case MixBlend_Setup: {
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if (vertexAttachment->getBones().size() == 0) {
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// Unweighted vertex positions, with alpha.
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Array<float> &setupVertices = vertexAttachment->getVertices();
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for (size_t i = 0; i < vertexCount; i++) {
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float setup = setupVertices[i];
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deform[i] = setup + (lastVertices[i] - setup) * alpha;
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}
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} else {
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// Weighted deform offsets, with alpha.
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for (size_t i = 0; i < vertexCount; i++) deform[i] = lastVertices[i] * alpha;
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}
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break;
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}
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case MixBlend_First:
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case MixBlend_Replace:
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// Vertex positions or deform offsets, with alpha.
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for (size_t i = 0; i < vertexCount; i++) deform[i] += (lastVertices[i] - deform[i]) * alpha;
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break;
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case MixBlend_Add:
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if (vertexAttachment->getBones().size() == 0) {
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// Unweighted vertex positions, with alpha.
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Array<float> &setupVertices = vertexAttachment->getVertices();
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for (size_t i = 0; i < vertexCount; i++) deform[i] += (lastVertices[i] - setupVertices[i]) * alpha;
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} else {
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// Weighted deform offsets, alpha.
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for (size_t i = 0; i < vertexCount; i++) deform[i] += lastVertices[i] * alpha;
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}
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break;
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}
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}
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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 = Animation::search(frames, time);
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float percent = getCurvePercent(time, frame);
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Array<float> &prevVertices = vertices[frame];
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Array<float> &nextVertices = vertices[frame + 1];
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if (alpha == 1) {
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if (blend == MixBlend_Add) {
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if (vertexAttachment->getBones().size() == 0) {
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// Unweighted vertex positions, no alpha.
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Array<float> &setupVertices = vertexAttachment->getVertices();
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for (size_t i = 0; i < vertexCount; i++) {
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float prev = prevVertices[i];
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deform[i] += prev + (nextVertices[i] - prev) * percent - setupVertices[i];
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}
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} else {
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// Weighted deform offsets, no alpha.
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for (size_t i = 0; i < vertexCount; i++) {
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float prev = prevVertices[i];
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deform[i] += prev + (nextVertices[i] - prev) * percent;
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}
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}
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} else if (percent == 0) {
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memcpy(deform.buffer(), prevVertices.buffer(), vertexCount * sizeof(float));
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} else {
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// Vertex positions or deform offsets, no alpha.
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for (size_t i = 0; i < vertexCount; i++) {
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float prev = prevVertices[i];
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deform[i] = prev + (nextVertices[i] - prev) * percent;
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}
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}
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} else {
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switch (blend) {
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case MixBlend_Setup: {
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if (vertexAttachment->getBones().size() == 0) {
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// Unweighted vertex positions, with alpha.
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Array<float> &setupVertices = vertexAttachment->getVertices();
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for (size_t i = 0; i < vertexCount; i++) {
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float prev = prevVertices[i], setup = setupVertices[i];
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deform[i] = setup + (prev + (nextVertices[i] - prev) * percent - setup) * alpha;
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}
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} else {
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// Weighted deform offsets, with alpha.
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for (size_t i = 0; i < vertexCount; i++) {
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float prev = prevVertices[i];
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deform[i] = (prev + (nextVertices[i] - prev) * percent) * alpha;
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}
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}
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break;
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}
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case MixBlend_First:
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case MixBlend_Replace:
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// Vertex positions or deform offsets, with alpha.
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for (size_t i = 0; i < vertexCount; i++) {
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float prev = prevVertices[i];
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deform[i] += (prev + (nextVertices[i] - prev) * percent - deform[i]) * alpha;
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}
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break;
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case MixBlend_Add:
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if (vertexAttachment->getBones().size() == 0) {
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// Unweighted vertex positions, with alpha.
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Array<float> &setupVertices = vertexAttachment->getVertices();
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for (size_t i = 0; i < vertexCount; i++) {
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float prev = prevVertices[i];
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deform[i] += (prev + (nextVertices[i] - prev) * percent - setupVertices[i]) * alpha;
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}
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} else {
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// Weighted deform offsets, with alpha.
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for (size_t i = 0; i < vertexCount; i++) {
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float prev = prevVertices[i];
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deform[i] += (prev + (nextVertices[i] - prev) * percent) * alpha;
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}
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}
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break;
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}
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}
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}
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void DeformTimeline::setBezier(size_t bezier, size_t frame, float value, float time1, float value1, float cx1, float cy1, float cx2, float cy2,
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float time2, float value2) {
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SP_UNUSED(value1);
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SP_UNUSED(value2);
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Array<float> &curves = _curves;
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size_t i = getFrameCount() + bezier * BEZIER_SIZE;
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if (value == 0) curves[frame] = BEZIER + (float) i;
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float tmpx = (time1 - cx1 * 2 + cx2) * 0.03f, tmpy = cy2 * 0.03f - cy1 * 0.06f;
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float dddx = ((cx1 - cx2) * 3 - time1 + time2) * 0.006f, dddy = (cy1 - cy2 + 0.33333333f) * 0.018f;
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float ddx = tmpx * 2 + dddx, ddy = tmpy * 2 + dddy;
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float dx = (cx1 - time1) * 0.3f + tmpx + dddx * 0.16666667f, dy = cy1 * 0.3f + tmpy + dddy * 0.16666667f;
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float x = time1 + dx, y = dy;
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for (size_t n = i + BEZIER_SIZE; i < n; i += 2) {
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curves[i] = x;
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curves[i + 1] = y;
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dx += ddx;
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dy += ddy;
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ddx += dddx;
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ddy += dddy;
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x += dx;
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y += dy;
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}
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}
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float DeformTimeline::getCurvePercent(float time, int frame) {
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Array<float> &curves = _curves;
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int i = (int) curves[frame];
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switch (i) {
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case LINEAR: {
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float x = _frames[frame];
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return (time - x) / (_frames[frame + getFrameEntries()] - x);
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}
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case STEPPED: {
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return 0;
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}
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}
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i -= BEZIER;
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if (curves[i] > time) {
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float x = _frames[frame];
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return curves[i + 1] * (time - x) / (curves[i] - x);
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}
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int n = i + BEZIER_SIZE;
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for (i += 2; i < n; i += 2) {
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if (curves[i] >= time) {
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float x = curves[i - 2], y = curves[i - 1];
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return y + (time - x) / (curves[i] - x) * (curves[i + 1] - y);
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}
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}
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float x = curves[n - 2], y = curves[n - 1];
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return y + (1 - y) * (time - x) / (_frames[frame + getFrameEntries()] - x);
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}
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void DeformTimeline::setFrame(int frame, float time, Array<float> &vertices) {
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_frames[frame] = time;
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_vertices[frame].clear();
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_vertices[frame].addAll(vertices);
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}
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Array<Array<float>> &DeformTimeline::getVertices() {
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return _vertices;
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}
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VertexAttachment *DeformTimeline::getAttachment() {
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return _attachment;
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}
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void DeformTimeline::setAttachment(VertexAttachment *inValue) {
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_attachment = inValue;
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}
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