//
// MultiSprite.cpp
// Tools
//
// Created by apple on 16/11/7.
//
//
#include "MultiSprite.h"
namespace YXTools {
static unsigned short quadIndices[]={0,1,2, 3,2,1};
MultiSprite::MultiSprite():
Sprite(),
_lightTexture(nullptr)
{
}
MultiSprite * MultiSprite::create(std::string filename, std::string lightTexture)
{
MultiSprite * sprite = new MultiSprite();
if (sprite && sprite->init(filename, lightTexture)) {
sprite->autorelease();
return sprite;
}
CC_SAFE_DELETE(sprite);
return nullptr;
}
bool MultiSprite::init(std::string baseFilename, std::string lightFilename)
{
bool ret = Sprite::initWithFile(baseFilename);
const char fragmentShader[] =
"#ifdef GL_ES \n"
"precision lowp float; \n"
"#endif \n"
"varying vec4 v_fragmentColor; \n"
"varying vec2 v_texCoord; \n"
"varying vec2 v_texCoord1; \n"
"void main() \n"
"{ \n"
" vec4 baseColor; \n"
" baseColor = texture2D( CC_Texture0, v_texCoord )*v_fragmentColor; \n"
" vec4 lightColor; \n"
" if (v_texCoord1.x>1.0 || v_texCoord1.y>1.0 || v_texCoord1.y < 0.0 || v_texCoord1.x<0.0 ) \n"
" { \n"
" lightColor = vec4(0, 0, 0, 1); \n"
" } \n"
" else \n"
" { \n"
" lightColor = texture2D( CC_Texture1, v_texCoord1 ); \n"
" } \n"
" gl_FragColor = baseColor * (lightColor + 0.25); \n"
" \n"
"} \n";
const char vectShader[] =
"attribute vec4 a_position; \n"
"attribute vec2 a_texCoord; \n"
"attribute vec2 a_texCoord1; \n"
"attribute vec4 a_color; \n"
"#ifdef GL_ES \n"
"varying lowp vec4 v_fragmentColor; \n"
"varying mediump vec2 v_texCoord; \n"
"varying mediump vec2 v_texCoord1; \n"
"#else \n"
"varying vec4 v_fragmentColor; \n"
"varying vec2 v_texCoord; \n"
"varying vec2 v_texCoord1; \n"
"#endif \n"
"void main() \n"
"{ \n"
" gl_Position = CC_MVPMatrix * a_position; \n"
" v_fragmentColor = a_color; \n"
" v_texCoord = a_texCoord; \n"
" v_texCoord1 = a_texCoord1; \n"
"} \n";
GLProgram * program = GLProgram::createWithByteArrays(vectShader, fragmentShader);
setGLProgramState(GLProgramState::getOrCreateWithGLProgram(program));
_multiCommand.func = CC_CALLBACK_0(MultiSprite::renderMultiSprite, this);
setLightTexture(lightFilename);
setRectInBase(Rect(Vec2::ZERO, _texture->getContentSize()));
return ret;
}
void MultiSprite::setLightTexture(std::string filename)
{
setLightTexture(Director::getInstance()->getTextureCache()->addImage(filename));
}
void MultiSprite::setLightTexture(cocos2d::Texture2D *texture)
{
if (texture != _lightTexture) {
CC_SAFE_RELEASE(_lightTexture);
_lightTexture = texture;
CC_SAFE_RETAIN(texture);
}
}
void MultiSprite::draw(cocos2d::Renderer *renderer, const cocos2d::Mat4 &transform, uint32_t flags)
{
_multiCommand.init(_globalZOrder, transform, flags);
renderer->addCommand(&_multiCommand);
}
void MultiSprite::setRectInBase(cocos2d::Rect rect)
{
if (!_rectInBase.equals(rect)) {
_rectInBase = rect;
PolygonInfo baseInfo = _polyInfo;
Size baseContentSize = _texture->getContentSize();
//坐标确定，纹理坐标值越大，单张纹理（0到1）越小
float lightScaleX = _rectInBase.size.width/baseContentSize.width;
float lightScaleY = _rectInBase.size.height/baseContentSize.height;
float originX = -(_rectInBase.origin.x/baseContentSize.width/lightScaleX);
float originY = -((baseContentSize.height-_rectInBase.origin.y-_rectInBase.size.height)/baseContentSize.height/lightScaleY);
// 0, 0 0, 1 1, 0 1, 1
for (int i = 0; i<4; ++i) {
_verts[i].color = Color4F::WHITE;
_verts[i].vertices = baseInfo.triangles.verts[i].vertices;
_verts[i].texCoords = baseInfo.triangles.verts[i].texCoords;
}
_verts[0].texCoords1 = Tex2F( originX, originY);
_verts[1].texCoords1 = Tex2F( originX, 1/lightScaleY+originY);
_verts[2].texCoords1 = Tex2F( 1/lightScaleX+originX, originY);
_verts[3].texCoords1 = Tex2F( 1/lightScaleX+originX, 1/lightScaleY+originY);
}
}
void MultiSprite::renderMultiSprite()
{
//load mv
_glProgramState->apply(_modelViewTransform);
float size = sizeof(V3F_C4F_T2F2);
// Load the vertex position
glVertexAttribPointer ( GLProgram::VERTEX_ATTRIB_POSITION, 3, GL_FLOAT,
GL_FALSE, size, &_verts[0]);
glVertexAttribPointer ( GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_FLOAT,
GL_FALSE, size, &(_verts[0].color));
// Load the texture coordinate
glVertexAttribPointer ( GLProgram::VERTEX_ATTRIB_TEX_COORD, 2, GL_FLOAT,
GL_FALSE, size, &(_verts[0].texCoords));
glVertexAttribPointer ( GLProgram::VERTEX_ATTRIB_TEX_COORD1, 2, GL_FLOAT,
GL_FALSE, size, &(_verts[0].texCoords1));
glEnableVertexAttribArray ( GLProgram::VERTEX_ATTRIB_POSITION );
glEnableVertexAttribA
