spine-runtimes/spine-cocos2dx/src/spine/SkeletonBatch.cpp

/******************************************************************************
 * Spine Runtimes Software License
 * Version 2.3
 * 
 * Copyright (c) 2013-2015, Esoteric Software
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#include <spine/SkeletonBatch.h>
#include <spine/extension.h>
#include <algorithm>

USING_NS_CC;
using std::max;

namespace spine {

static SkeletonBatch* instance = nullptr;

void SkeletonBatch::setBufferSize (int vertexCount) {
	if (instance) delete instance;
	instance = new SkeletonBatch(vertexCount);
}

SkeletonBatch* SkeletonBatch::getInstance () {
	if (!instance) instance = new SkeletonBatch(8192);
	return instance;
}

SkeletonBatch::SkeletonBatch (int capacity) :
	_capacity(capacity), _position(0)
{
	_buffer = new V3F_C4B_T2F[capacity];
	_firstCommand = new Command();
	_command = _firstCommand;

	Director::getInstance()->getScheduler()->scheduleUpdate(this, -1, false);
}

SkeletonBatch::~SkeletonBatch () {
	Director::getInstance()->getScheduler()->unscheduleUpdate(this);

	Command* command = _firstCommand;
	while (command) {
		Command* next = command->next;
		delete command;
		command = next;
	}

	delete [] _buffer;
}

void SkeletonBatch::update (float delta) {
	_position = 0;
	_command = _firstCommand;
}

void SkeletonBatch::addCommand (cocos2d::Renderer* renderer, float globalZOrder, GLuint textureID, GLProgramState* glProgramState,
	BlendFunc blendFunc, const TrianglesCommand::Triangles& triangles, const Mat4& transform, uint32_t transformFlags
) {
	if (_position + triangles.vertCount > _capacity) {
		int newCapacity = max(_capacity + _capacity / 2, _position + triangles.vertCount);
		V3F_C4B_T2F* newBuffer = new V3F_C4B_T2F[newCapacity];
		memcpy(newBuffer, _buffer, _position);

		int newPosition = 0;
		Command* command = _firstCommand;
		while (newPosition < _position) {
			command->triangles->verts = newBuffer + newPosition;
			newPosition += command->triangles->vertCount;
			command = command->next;
		}

		delete [] _buffer;
		_buffer = newBuffer;
		_capacity = newCapacity;
	}

	memcpy(_buffer + _position, triangles.verts, sizeof(V3F_C4B_T2F) * triangles.vertCount);
	_command->triangles->verts = _buffer + _position;
	_position += triangles.vertCount;

	_command->triangles->vertCount = triangles.vertCount;
	_command->triangles->indexCount = triangles.indexCount;
	_command->triangles->indices = triangles.indices;

	_command->trianglesCommand->init(globalZOrder, textureID, glProgramState, blendFunc, *_command->triangles, transform, transformFlags);
	renderer->addCommand(_command->trianglesCommand);

	if (!_command->next) _command->next = new Command();
	_command = _command->next;
}

SkeletonBatch::Command::Command () :
	next(nullptr)
{
	trianglesCommand = new TrianglesCommand();
	triangles = new TrianglesCommand::Triangles();
}

SkeletonBatch::Command::~Command () {
	delete triangles;
	delete trianglesCommand;
}

}