C++ ofPixels_::getHeight方法代码示例

本文整理汇总了C++中ofPixels_::getHeight方法的典型用法代码示例。如果您正苦于以下问题：C++ ofPixels_::getHeight方法的具体用法？C++ ofPixels_::getHeight怎么用？C++ ofPixels_::getHeight使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ofPixels_的用法示例。

在下文中一共展示了ofPixels_::getHeight方法的11个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: getWidth

bool ofPixels_<PixelType>::pasteInto(ofPixels_<PixelType> &dst, int xTo, int yTo) const{
	if (!(isAllocated()) || !(dst.isAllocated()) || getBytesPerPixel() != dst.getBytesPerPixel() || xTo + getWidth()>dst.getWidth() || yTo + getHeight()>dst.getHeight()) return false;

	int bytesToCopyPerRow = (xTo + getWidth()<=dst.getWidth() ? getWidth() : dst.getWidth()-xTo) * getBytesPerPixel();
	int columnsToCopy = yTo + getHeight() <= dst.getHeight() ? getHeight() : dst.getHeight()-yTo;
	PixelType * dstPix = dst.getData() + ((xTo + yTo*dst.getWidth())*dst.getBytesPerPixel());
	const PixelType * srcPix = getData();
	int srcStride = getWidth()*getBytesPerPixel();
	int dstStride = dst.getWidth()*dst.getBytesPerPixel();

	for(int y=0;y<columnsToCopy; y++){
		memcpy(dstPix,srcPix,bytesToCopyPerRow);
		dstPix += dstStride;
		srcPix += srcStride;
	}

	return true;
}

开发者ID:8morikazuto，项目名称:openFrameworks，代码行数:18，代码来源:ofPixels.cpp

示例2:

ofPixels_<unsigned char> ImageUtils::toGrayscale(const ofPixels_<unsigned char>& pixels)
{
    if (OF_IMAGE_GRAYSCALE == pixels.getImageType())
    {
        return pixels;
    }

    ofPixels pix;

    pix.allocate(pixels.getWidth(), pixels.getHeight(), OF_IMAGE_GRAYSCALE);

    for (std::size_t x = 0; x < pixels.getWidth(); ++x)
    {
        for (std::size_t y = 0; y < pixels.getHeight(); ++y)
        {
            ofColor_<unsigned char> c = pixels.getColor(x, y);
            pix.setColor(x, y, 0.21 * c.r + 0.71 * c.g + 0.07 * c.b);
        }
    }

    return pix;
}

开发者ID:techtim，项目名称:ofxESCPOS，代码行数:22，代码来源:ImageUtils.cpp

示例3: removeIslands

void removeIslands(ofPixels_<T>& img) {
	int w = img.getWidth(), h = img.getHeight();
	int ia1=-w-1,ia2=-w-0,ia3=-w+1,ib1=-0-1,ib3=-0+1,ic1=+w-1,ic2=+w-0,ic3=+w+1;
	T* p = img.getPixels();
	for(int y = 1; y + 1 < h; y++) {
		for(int x = 1; x + 1 < w; x++) {
			int i = y * w + x;
			if(p[i]) {
				if(!p[i+ia1]&&!p[i+ia2]&&!p[i+ia3]&&!p[i+ib1]&&!p[i+ib3]&&!p[i+ic1]&&!p[i+ic2]&&!p[i+ic3]) {
					p[i] = 0;
				}
			}
		}
	}
}

开发者ID:MarxGonzalez，项目名称:LightLeaks，代码行数:15，代码来源:ofApp.cpp

示例4: selectBitImageMode

std::size_t DefaultBitImageCommands::selectBitImageMode(const ofPixels_<unsigned char>& binaryPixels,
                                                        BaseCodes::PrintResolution printResolution)
{
    // width = nL + (nH * 256)
    // nH is the HIGH part of the WIDTH VALUE.
    // nL is the LOW part of the WIDTH VALUE.
    // nH will always be 0 for values less that 256 (1 byte)
    uint8_t nH = getHighByte(binaryPixels.getWidth());
    uint8_t nL = getLowByte(binaryPixels.getWidth());

    std::vector<uint8_t> buffer;

    buffer.push_back(BaseCodes::ESC);
    buffer.push_back('*');
    buffer.push_back(printResolution);
    buffer.push_back(nL);
    buffer.push_back(nH);

    uint8_t currentByte = 0;
    int bitIndex = 0;

    for(int x = 0; x < binaryPixels.getWidth(); ++x)
    {
        currentByte = 0;
        bitIndex = 0;

        for(int y = 0; y < binaryPixels.getHeight(); ++y)
        {
            bool binaryValue = binaryPixels[binaryPixels.getPixelIndex(x,y)] < ofColor_<unsigned char>::limit() / 2;

            currentByte |= binaryValue << (7 - bitIndex);

            bitIndex++;

            if(8 == bitIndex)
            {
                buffer.push_back(currentByte);
                currentByte = 0;
                bitIndex = 0;
            }
        }
    }
    
    return writeBytes(buffer);
}

开发者ID:crecord，项目名称:ofxESCPOS，代码行数:45，代码来源:DefaultBitImageCommands.cpp

示例5: inRect

ofPixels_<unsigned char> ImageUtils::scaleAndCropTo(const ofPixels_<unsigned char>& pixels,
                                                    int width,
                                                    int height,
                                                    ofScaleMode scaleMode)
{
    ofRectangle inRect(0,0,pixels.getWidth(),pixels.getHeight());
    ofRectangle outRect(0,0,width,height);

    inRect.scaleTo(outRect,scaleMode);

    ofPixels_<unsigned char> inPixels = pixels;

    inPixels.resize(inRect.getWidth(),inRect.getHeight());

    ofPixels_<unsigned char> outPixels;

    inPixels.cropTo(outPixels,
                    outRect.x - inRect.x,
                    0,
                    outRect.width,
                    outRect.height);

    return outPixels;
}

开发者ID:techtim，项目名称:ofxESCPOS，代码行数:24，代码来源:ImageUtils.cpp

示例6:

void ofImage_<PixelType>::setFromPixels(const ofPixels_<PixelType> & pixels){
	setFromPixels(pixels.getPixels(),pixels.getWidth(),pixels.getHeight(),pixels.getImageType());
}

开发者ID:prettyextreme，项目名称:openFrameworks-0.7，代码行数:3，代码来源:ofImage.cpp

示例7: getTotalBytes

void ofPixels_<PixelType>::copyFrom(const ofPixels_<PixelType> & mom){
	if(mom.isAllocated()) {
		allocate(mom.getWidth(), mom.getHeight(), mom.getPixelFormat());
		memcpy(pixels, mom.getData(), getTotalBytes());
	}
}

开发者ID:8morikazuto，项目名称:openFrameworks，代码行数:6，代码来源:ofPixels.cpp

示例8: clampedAdd

bool ofPixels_<PixelType>::blendInto(ofPixels_<PixelType> &dst, int xTo, int yTo) const{
	if (!(isAllocated()) || !(dst.isAllocated()) || getBytesPerPixel() != dst.getBytesPerPixel() || xTo + getWidth()>dst.getWidth() || yTo + getHeight()>dst.getHeight() || getNumChannels()==0) return false;

	std::function<void(const ConstPixel&,Pixel&)> blendFunc;
	switch(getNumChannels()){
	case 1:
		blendFunc = [](const ConstPixel&src, Pixel&dst){
			dst[0] = clampedAdd(src[0], dst[0]);
		};
		break;
	case 2:
		blendFunc = [](const ConstPixel&src, Pixel&dst){
			dst[0] = clampedAdd(src[0], dst[0] / ofColor_<PixelType>::limit() * (ofColor_<PixelType>::limit() - src[1]));
			dst[1] = clampedAdd(src[1], dst[1] / ofColor_<PixelType>::limit() * (ofColor_<PixelType>::limit() - src[1]));
		};
		break;
	case 3:
		blendFunc = [](const ConstPixel&src, Pixel&dst){
			dst[0] = clampedAdd(src[0], dst[0]);
			dst[1] = clampedAdd(src[1], dst[1]);
			dst[2] = clampedAdd(src[2], dst[2]);
		};
		break;
	case 4:
		blendFunc = [](const ConstPixel&src, Pixel&dst){
			dst[0] = clampedAdd(src[0], dst[0] / ofColor_<PixelType>::limit() * (ofColor_<PixelType>::limit() - src[3]));
			dst[1] = clampedAdd(src[1], dst[1] / ofColor_<PixelType>::limit() * (ofColor_<PixelType>::limit() - src[3]));
			dst[2] = clampedAdd(src[2], dst[2] / ofColor_<PixelType>::limit() * (ofColor_<PixelType>::limit() - src[3]));
			dst[3] = clampedAdd(src[3], dst[3] / ofColor_<PixelType>::limit() * (ofColor_<PixelType>::limit() - src[3]));
		};
		break;
	}
	auto dstLine = dst.getLine(yTo);
	for(auto line: getConstLines()){
		auto dstPixel = dstLine.getPixels().begin() + xTo;
		for(auto p: line.getPixels()){
			blendFunc(p,dstPixel);
			dstPixel++;
		}
		dstLine++;
	}

	return true;
}

开发者ID:8morikazuto，项目名称:openFrameworks，代码行数:44，代码来源:ofPixels.cpp

示例9:

void ofPixels_<PixelType>::copyFrom(const ofPixels_<PixelType> & mom){
	if(mom.isAllocated()) {
		allocate(mom.getWidth(), mom.getHeight(), mom.getNumChannels());
		memcpy(pixels, mom.getPixels(), mom.getWidth() * mom.getHeight() * mom.getBytesPerPixel());
	}
}

开发者ID:Akzwar，项目名称:Projects_backup，代码行数:6，代码来源:ofPixels.cpp

示例10: sizeof

void ofPixels_<PixelType>::copyFrom(const ofPixels_<PixelType> & mom){
	if(mom.isAllocated()) {
		allocate(mom.getWidth(), mom.getHeight(), mom.getPixelFormat());
		memcpy(pixels, mom.getPixels(), mom.size() * sizeof(PixelType));
	}
}

开发者ID:，项目名称:，代码行数:6，代码来源:

示例11: printImage

std::size_t DefaultBitImageCommands::printImage(const ofPixels_<unsigned char>& pixels,
                                                ofAlignHorz alignHorz,
                                                float ditherThreshold,
                                                float ditherQuantWeight,
                                                BaseCodes::PrintResolution printResolution,
                                                int printHeadWidth,
                                                int printHeadHeight)
{

    int numVerticalDots = 0;
    int maxHorizontalDots = 0;
    int verticalScale = 1;

    switch(printResolution)
    {
        case BaseCodes::RESOLUTION_8_DOTS_SINGLE_DENSITY:
            maxHorizontalDots = printHeadWidth / 2;
            numVerticalDots = 8;
            break;
        case BaseCodes::RESOLUTION_8_DOTS_DOUBLE_DENSITY:
            maxHorizontalDots = printHeadWidth;
            numVerticalDots = 8;
            break;
        case BaseCodes::RESOLUTION_24_DOTS_SINGLE_DENSITY:
            maxHorizontalDots = printHeadWidth / 2;
            numVerticalDots = 24;
            break;
        case BaseCodes::RESOLUTION_24_DOTS_DOUBLE_DENSITY:
            maxHorizontalDots = printHeadWidth;
            numVerticalDots = 24;
            break;
    }

    std::size_t totalBytesWritten = 0;

    ofRectangle imageRect(0,0,pixels.getWidth(),pixels.getHeight());
    ofRectangle rectangle(0,0,maxHorizontalDots,pixels.getHeight());

    imageRect.scaleTo(rectangle,
                      OF_ASPECT_RATIO_KEEP,
                      alignHorz,
                      OF_ALIGN_VERT_TOP,
                      alignHorz,
                      OF_ALIGN_VERT_TOP);

    int width = rectangle.getWidth();
    int height = imageRect.getHeight();

    // ensure vertical res
    if(height != numVerticalDots)
    {
        int remainder = height % numVerticalDots;
        if (remainder != 0)
        {
            height = height + numVerticalDots - remainder;
        }
    }

    ofPixels pix = pixels; // get a copy
    ofPixels toPrint;

    toPrint.allocate(width, height, pix.getNumChannels());
    toPrint.setColor(ofColor(255));

    pix.resize(imageRect.getWidth(), imageRect.getHeight());
    pix.pasteInto(toPrint,imageRect.getX(),imageRect.getY());

    toPrint = ImageUtils::dither(toPrint,ditherThreshold,ditherQuantWeight);


    cout << pix.getWidth() << " / " << pix.getHeight() << endl;

    ofPixels bandBuffer;

    bandBuffer.allocate(toPrint.getWidth(), numVerticalDots, toPrint.getNumChannels());

    // go into page mode
    totalBytesWritten += writeByte(BaseCodes::ESC);
    totalBytesWritten += writeByte('L');

    // set the print area / origin
    totalBytesWritten += setPageModePrintArea(0,0,toPrint.getWidth(),toPrint.getHeight() * 2); // TODO 2 * works for double vert density


    for(int y = 0; y < height; y += numVerticalDots)
    {
        // set the vertical displacement
        const uint8_t command[3] = { BaseCodes::ESC, '3', numVerticalDots * 2 }; // TODO 2 * works for double vert density
        totalBytesWritten += writeBytes(command, 3);

        bandBuffer.clear();
        toPrint.cropTo(bandBuffer,0,y,width,numVerticalDots);
        totalBytesWritten += selectBitImageMode(bandBuffer, printResolution);
        totalBytesWritten += writeByte(BaseCodes::LF); // feed a line

        // set vertical displacement back to normal
        const uint8_t command0[2] = { BaseCodes::ESC, '2' };
        totalBytesWritten += writeBytes(command0, 2);
    }

//.........这里部分代码省略.........

开发者ID:crecord，项目名称:ofxESCPOS，代码行数:101，代码来源:DefaultBitImageCommands.cpp

注：本文中的ofPixels_::getHeight方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。