C++ Director::loadMatrix方法代码示例

void GameLayer::onDraw(const Mat4 &transform)
{
	Director* director = Director::getInstance();
	CCASSERT(nullptr != director, "Director is null when seting matrix stack");
	auto oldMV = director->getMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
	director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, transform);
	_world->DrawDebugData();
	director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, oldMV);
}

void RenderTexture::onBegin()
{
    //
    Director *director = Director::getInstance();

    _oldProjMatrix = director->getMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_PROJECTION);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_PROJECTION, _projectionMatrix);

    _oldTransMatrix = director->getMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _transformMatrix);

    if(!_keepMatrix)
    {
        director->setProjection(director->getProjection());

        const Size& texSize = _texture->getContentSizeInPixels();

        // Calculate the adjustment ratios based on the old and new projections
        Size size = director->getWinSizeInPixels();
        float widthRatio = size.width / texSize.width;
        float heightRatio = size.height / texSize.height;

        Mat4 orthoMatrix;
        Mat4::createOrthographicOffCenter((float)-1.0 / widthRatio, (float)1.0 / widthRatio, (float)-1.0 / heightRatio, (float)1.0 / heightRatio, -1, 1, &orthoMatrix);
        director->multiplyMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_PROJECTION, orthoMatrix);
    }

    //calculate viewport
    {
        Rect viewport;
        viewport.size.width = _fullviewPort.size.width;
        viewport.size.height = _fullviewPort.size.height;
        float viewPortRectWidthRatio = float(viewport.size.width)/_fullRect.size.width;
        float viewPortRectHeightRatio = float(viewport.size.height)/_fullRect.size.height;
        viewport.origin.x = (_fullRect.origin.x - _rtTextureRect.origin.x) * viewPortRectWidthRatio;
        viewport.origin.y = (_fullRect.origin.y - _rtTextureRect.origin.y) * viewPortRectHeightRatio;
        //glViewport(_fullviewPort.origin.x, _fullviewPort.origin.y, (GLsizei)_fullviewPort.size.width, (GLsizei)_fullviewPort.size.height);
        glViewport(viewport.origin.x, viewport.origin.y, (GLsizei)viewport.size.width, (GLsizei)viewport.size.height);
    }

    // Adjust the orthographic projection and viewport

    glGetIntegerv(GL_FRAMEBUFFER_BINDING, &_oldFBO);
    glBindFramebuffer(GL_FRAMEBUFFER, _FBO);

    // TODO: move this to configration, so we don't check it every time
    /*  Certain Qualcomm Andreno gpu's will retain data in memory after a frame buffer switch which corrupts the render to the texture. The solution is to clear the frame buffer before rendering to the texture. However, calling glClear has the unintended result of clearing the current texture. Create a temporary texture to overcome this. At the end of RenderTexture::begin(), switch the attached texture to the second one, call glClear, and then switch back to the original texture. This solution is unnecessary for other devices as they don't have the same issue with switching frame buffers.
     */
    if (Configuration::getInstance()->checkForGLExtension("GL_QCOM"))
    {
        // -- bind a temporary texture so we can clear the render buffer without losing our texture
        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _textureCopy->getName(), 0);
        CHECK_GL_ERROR_DEBUG();
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _texture->getName(), 0);
    }
}

void FPB2DebugDrawLayer::onDraw() {
     Director* director = Director::getInstance();
     CCASSERT(nullptr != director, "Director is null when seting matrix stack");
     Mat4 oldMV;
     oldMV = director->getMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
     director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewMV);
     mB2World->DrawDebugData();
     director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, oldMV);
}

void GameLayer::onDraw()
{
	Director* director = Director::getInstance();
	CCASSERT(nullptr != director, "Director is null when seting matrix stack");

	auto oldMV = director->getMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
	director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewMV);
	PhysicsWorldManager::getInstance()->draw();
	director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, oldMV);
}

void Box2DTest::onDraw()
{
    Director* director = Director::getInstance();
    CCASSERT(nullptr != director, "Director is null when seting matrix stack");

    auto oldMV = director->getMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewMV);
    world->DrawDebugData();
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, oldMV);
}

// override visit.
// Don't call visit on it's children
void ParticleBatchNode::visit(Renderer *renderer, const Matrix &parentTransform, bool parentTransformUpdated)
{
    // CAREFUL:
    // This visit is almost identical to Node#visit
    // with the exception that it doesn't call visit on it's children
    //
    // The alternative is to have a void Sprite#visit, but
    // although this is less maintainable, is faster
    //
    if (!_visible)
    {
        return;
    }

    bool dirty = parentTransformUpdated || _transformUpdated;
    if(dirty)
        _modelViewTransform = transform(parentTransform);
    _transformUpdated = false;

    // IMPORTANT:
    // To ease the migration to v3.0, we still support the Matrix stack,
    // but it is deprecated and your code should not rely on it
    Director* director = Director::getInstance();
    CCASSERT(nullptr != director, "Director is null when seting matrix stack");
    director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);

    draw(renderer, _modelViewTransform, dirty);

    director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
}

// override visit.
// Don't call visit on it's children
void ParticleBatchNode::visit(Renderer *renderer, const Mat4 &parentTransform, uint32_t parentFlags)
{
    // CAREFUL:
    // This visit is almost identical to Node#visit
    // with the exception that it doesn't call visit on it's children
    //
    // The alternative is to have a void Sprite#visit, but
    // although this is less maintainable, is faster
    //
    if (!_visible)
    {
        return;
    }
    
    uint32_t flags = processParentFlags(parentTransform, parentFlags);
    
    if (isVisitableByVisitingCamera())
    {
        // IMPORTANT:
        // To ease the migration to v3.0, we still support the Mat4 stack,
        // but it is deprecated and your code should not rely on it
        Director* director = Director::getInstance();
        director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
        director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);
        
        draw(renderer, _modelViewTransform, flags);
        
        director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    }
}

void BatchNode::visit(Renderer *renderer, const Mat4 &parentTransform, uint32_t parentFlags)
{
    // quick return if not visible. children won't be drawn.
    if (!_visible || !isVisitableByVisitingCamera())
    {
        return;
    }

    uint32_t flags = processParentFlags(parentTransform, parentFlags);

    // IMPORTANT:
    // To ease the migration to v3.0, we still support the Mat4 stack,
    // but it is deprecated and your code should not rely on it
    Director* director = Director::getInstance();
    director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);

    sortAllChildren();
    draw(renderer, _modelViewTransform, flags);

    // reset for next frame
    _orderOfArrival = 0;

    director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
}

void RenderTexture::visit(Renderer *renderer, const Mat4 &parentTransform, bool parentTransformUpdated)
{
    // override visit.
	// Don't call visit on its children
    if (!_visible)
    {
        return;
    }
	
    bool dirty = parentTransformUpdated || _transformUpdated;
    if(dirty)
        _modelViewTransform = transform(parentTransform);
    _transformUpdated = false;
    
    Director* director = Director::getInstance();
    CCASSERT(nullptr != director, "Director is null when seting matrix stack");

    // IMPORTANT:
    // To ease the migration to v3.0, we still support the Mat4 stack,
    // but it is deprecated and your code should not rely on it
    director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);

    _sprite->visit(renderer, _modelViewTransform, dirty);
    draw(renderer, _modelViewTransform, dirty);
    
    director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);

    _orderOfArrival = 0;
}

void Armature::visit(cocos2d::Renderer *renderer, const Mat4 &parentTransform, uint32_t parentFlags)
{
    // quick return if not visible. children won't be drawn.
    if (!_visible)
    {
        return;
    }

    uint32_t flags = processParentFlags(parentTransform, parentFlags);

    if (isVisitableByVisitingCamera())
    {
        // IMPORTANT:
        // To ease the migration to v3.0, we still support the Mat4 stack,
        // but it is deprecated and your code should not rely on it
        Director* director = Director::getInstance();
        CCASSERT(nullptr != director, "Director is null when setting matrix stack");
        director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
        director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);
        
        
        sortAllChildren();
        draw(renderer, _modelViewTransform, flags);
        
        // FIX ME: Why need to set _orderOfArrival to 0??
        // Please refer to https://github.com/cocos2d/cocos2d-x/pull/6920
        // setOrderOfArrival(0);
        
        director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    }
}

void Armature::visit(cocos2d::Renderer *renderer, const Mat4 &parentTransform, bool parentTransformUpdated)
{
    // quick return if not visible. children won't be drawn.
    if (!_visible)
    {
        return;
    }

    bool dirty = parentTransformUpdated || _transformUpdated;
    if(dirty)
        _modelViewTransform = transform(parentTransform);
    _transformUpdated = false;

    // IMPORTANT:
    // To ease the migration to v3.0, we still support the Mat4 stack,
    // but it is deprecated and your code should not rely on it
    Director* director = Director::getInstance();
    CCASSERT(nullptr != director, "Director is null when seting matrix stack");
    director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);


    sortAllChildren();
    draw(renderer, _modelViewTransform, dirty);

    // reset for next frame
    _orderOfArrival = 0;

    director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
}

void TMXIsoObjectsTest::onDraw(const Mat4 &transform, bool transformUpdated)
{
    Director* director = Director::getInstance();
    CCASSERT(nullptr != director, "Director is null when seting matrix stack");
    director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, transform);

    auto map = (TMXTiledMap*) getChildByTag(kTagTileMap);
    auto pos = map->getPosition();
    auto group = map->getObjectGroup("Object Group 1");

    auto& objects = group->getObjects();
    for (auto& obj : objects)
    {
        ValueMap& dict = obj.asValueMap();
        float x = dict["x"].asFloat();
        float y = dict["y"].asFloat();
        float width = dict["width"].asFloat();
        float height = dict["height"].asFloat();
        
        glLineWidth(3);
        
        DrawPrimitives::drawLine( pos + Vec2(x,y), pos + Vec2(x+width,y) );
        DrawPrimitives::drawLine( pos + Vec2(x+width,y), pos + Vec2(x+width,y+height) );
        DrawPrimitives::drawLine( pos + Vec2(x+width,y+height), pos + Vec2(x,y+height) );
        DrawPrimitives::drawLine( pos + Vec2(x,y+height), pos + Vec2(x,y) );
        
        glLineWidth(1);
    }

    director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
}

void RenderTexture::visit(Renderer *renderer, const Mat4 &parentTransform, uint32_t parentFlags)
{
    // override visit.
    // Don't call visit on its children
    if (!_visible || !isVisitableByVisitingCamera())
    {
        return;
    }
    
    uint32_t flags = processParentFlags(parentTransform, parentFlags);

    Director* director = Director::getInstance();
    // IMPORTANT:
    // To ease the migration to v3.0, we still support the Mat4 stack,
    // but it is deprecated and your code should not rely on it
    director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);

    _sprite->visit(renderer, _modelViewTransform, flags);
    draw(renderer, _modelViewTransform, flags);
    
    director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);

    // FIX ME: Why need to set _orderOfArrival to 0??
    // Please refer to https://github.com/cocos2d/cocos2d-x/pull/6920
    // setOrderOfArrival(0);
}

void RenderTexture::visit(Renderer *renderer, const Mat4 &parentTransform, uint32_t parentFlags)
{
    // override visit.
	// Don't call visit on its children
    if (!_visible)
    {
        return;
    }
	
    uint32_t flags = processParentFlags(parentTransform, parentFlags);

    Director* director = Director::getInstance();
    // IMPORTANT:
    // To ease the migration to v3.0, we still support the Mat4 stack,
    // but it is deprecated and your code should not rely on it
    director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);

    _sprite->visit(renderer, _modelViewTransform, flags);
    draw(renderer, _modelViewTransform, flags);
    
    director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);

    _orderOfArrival = 0;
}

void BillBoard::visit(Renderer *renderer, const Mat4& parentTransform, uint32_t parentFlags)
{
    // quick return if not visible. children won't be drawn.
    if (!_visible)
    {
        return;
    }
    bool visibleByCamera = isVisitableByVisitingCamera();
    // quick return if not visible by camera and has no children.
    if (!visibleByCamera && _children.empty())
    {
        return;
    }
    
    uint32_t flags = processParentFlags(parentTransform, parentFlags);
    
    //Add 3D flag so all the children will be rendered as 3D object
    flags |= FLAGS_RENDER_AS_3D;
    
    //Update Billboard transform
    bool dirty = calculateBillboardTransform();
    if(dirty)
    {
        flags |= FLAGS_TRANSFORM_DIRTY;
    }
    
    Director* director = Director::getInstance();
    director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, _modelViewTransform);
    
    int i = 0;
    
    if(!_children.empty())
    {
        sortAllChildren();
        // draw children zOrder < 0
        for(auto size = _children.size(); i < size; ++i)
        {
            auto node = _children.at(i);
            
            if (node && node->getLocalZOrder() < 0)
                node->visit(renderer, _modelViewTransform, flags);
            else
                break;
        }
        // self draw
        if (visibleByCamera)
            this->draw(renderer, _modelViewTransform, flags);

        for(auto it=_children.cbegin()+i, itCend = _children.cend(); it != itCend; ++it)
            (*it)->visit(renderer, _modelViewTransform, flags);
    }
    else if (visibleByCamera)
    {
        this->draw(renderer, _modelViewTransform, flags);
    }
    
    director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
}