初始化

cocos2d-x/cocos/editor-support/spine/TranslateTimeline.cpp

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+/******************************************************************************
+ * Spine Runtimes License Agreement
+ * Last updated January 1, 2020. Replaces all prior versions.
+ *
+ * Copyright (c) 2013-2020, Esoteric Software LLC
+ *
+ * Integration of the Spine Runtimes into software or otherwise creating
+ * derivative works of the Spine Runtimes is permitted under the terms and
+ * conditions of Section 2 of the Spine Editor License Agreement:
+ * http://esotericsoftware.com/spine-editor-license
+ *
+ * Otherwise, it is permitted to integrate the Spine Runtimes into software
+ * or otherwise create derivative works of the Spine Runtimes (collectively,
+ * "Products"), provided that each user of the Products must obtain their own
+ * Spine Editor license and redistribution of the Products in any form must
+ * include this license and copyright notice.
+ *
+ * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
+ * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************/
+
+#ifdef SPINE_UE4
+#include "SpinePluginPrivatePCH.h"
+#endif
+
+#include <spine/TranslateTimeline.h>
+
+#include <spine/Skeleton.h>
+#include <spine/Event.h>
+
+#include <spine/Slot.h>
+#include <spine/SlotData.h>
+#include <spine/Bone.h>
+#include <spine/BoneData.h>
+
+using namespace spine;
+
+RTTI_IMPL(TranslateTimeline, CurveTimeline)
+
+const int TranslateTimeline::ENTRIES = 3;
+const int TranslateTimeline::PREV_TIME = -3;
+const int TranslateTimeline::PREV_X = -2;
+const int TranslateTimeline::PREV_Y = -1;
+const int TranslateTimeline::X = 1;
+const int TranslateTimeline::Y = 2;
+
+TranslateTimeline::TranslateTimeline(int frameCount) : CurveTimeline(frameCount), _boneIndex(0) {
+	_frames.ensureCapacity(frameCount * ENTRIES);
+	_frames.setSize(frameCount * ENTRIES, 0);
+}
+
+TranslateTimeline::~TranslateTimeline() {
+}
+
+void TranslateTimeline::apply(Skeleton &skeleton, float lastTime, float time, Vector<Event *> *pEvents, float alpha,
+	MixBlend blend, MixDirection direction
+) {
+	SP_UNUSED(lastTime);
+	SP_UNUSED(pEvents);
+	SP_UNUSED(direction);
+
+	Bone *boneP = skeleton._bones[_boneIndex];
+	Bone &bone = *boneP;
+	if (!bone._active) return;
+
+	if (time < _frames[0]) {
+		switch (blend) {
+		case MixBlend_Setup:
+			bone._x = bone._data._x;
+			bone._y = bone._data._y;
+			return;
+		case MixBlend_First:
+			bone._x += (bone._data._x - bone._x) * alpha;
+			bone._y += (bone._data._y - bone._y) * alpha;
+		default: {}
+		}
+		return;
+	}
+
+	float x, y;
+	if (time >= _frames[_frames.size() - ENTRIES]) {
+		// Time is after last frame.
+		x = _frames[_frames.size() + PREV_X];
+		y = _frames[_frames.size() + PREV_Y];
+	} else {
+		// Interpolate between the previous frame and the current frame.
+		int frame = Animation::binarySearch(_frames, time, ENTRIES);
+		x = _frames[frame + PREV_X];
+		y = _frames[frame + PREV_Y];
+		float frameTime = _frames[frame];
+		float percent = getCurvePercent(frame / ENTRIES - 1,
+			1 - (time - frameTime) / (_frames[frame + PREV_TIME] - frameTime));
+
+		x += (_frames[frame + X] - x) * percent;
+		y += (_frames[frame + Y] - y) * percent;
+	}
+
+	switch (blend) {
+	case MixBlend_Setup:
+		bone._x = bone._data._x + x * alpha;
+		bone._y = bone._data._y + y * alpha;
+		break;
+	case MixBlend_First:
+	case MixBlend_Replace:
+		bone._x += (bone._data._x + x - bone._x) * alpha;
+		bone._y += (bone._data._y + y - bone._y) * alpha;
+		break;
+	case MixBlend_Add:
+		bone._x += x * alpha;
+		bone._y += y * alpha;
+	}
+}
+
+int TranslateTimeline::getPropertyId() {
+	return ((int) TimelineType_Translate << 24) + _boneIndex;
+}
+
+void TranslateTimeline::setFrame(int frameIndex, float time, float x, float y) {
+	frameIndex *= ENTRIES;
+	_frames[frameIndex] = time;
+	_frames[frameIndex + X] = x;
+	_frames[frameIndex + Y] = y;
+}