/* save png directly to qbytearray */
pixmap
= QPixmap::grabWidget(this);
pixmap.save(&buffer, "PNG"); // writes pixmap into bytes in PNG format
emit sendPixmapToMainWin(bytes);
/* save png directly to qbytearray */
QPixmap pixmap;
QByteArray bytes;
QBuffer buffer(&bytes);
pixmap = QPixmap::grabWidget(this);
buffer.open(QIODevice::WriteOnly);
pixmap.save(&buffer, "PNG"); // writes pixmap into bytes in PNG format
emit sendPixmapToMainWin(bytes);
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void GlWidget
::pixmapCatchFromForm(QByteArray bytes
) {
QImage image
((const uchar
* )bytes.
constData(), glWidth, glHeight,
QImage::Format_ARGB32);
texture = bindTexture(image); // something's wrong with image apparently
qDebug() << texture; // returns 1
}
void GlWidget::pixmapCatchFromForm(QByteArray bytes)
{
QImage image((const uchar* )bytes.constData(), glWidth, glHeight, QImage::Format_ARGB32);
texture = bindTexture(image); // something's wrong with image apparently
qDebug() << texture; // returns 1
}
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void GlWidget::paintGL()
{
//! [5]
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
QMatrix4x4 mMatrix;
QMatrix4x4 vMatrix;
QMatrix4x4 cameraTransformation;
cameraTransformation.rotate(alpha, 0, 1, 0);
cameraTransformation.rotate(beta, 1, 0, 0);
QVector3D cameraPosition = cameraTransformation * QVector3D(0, 0, distance);
QVector3D cameraUpDirection = cameraTransformation * QVector3D(0, 1, 0);
vMatrix.lookAt(cameraPosition, QVector3D(0, 0, 0), cameraUpDirection);
//! [6]
shaderProgram.bind();
shaderProgram.setUniformValue("mvpMatrix", pMatrix * vMatrix * mMatrix);
shaderProgram.setUniformValue("texture", 0);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture);
glActiveTexture(0);
shaderProgram.setAttributeArray("vertex", vertices.constData());
shaderProgram.enableAttributeArray("vertex");
shaderProgram.setAttributeArray("textureCoordinate", textureCoordinates.constData());
shaderProgram.enableAttributeArray("textureCoordinate");
glDrawArrays(GL_TRIANGLES, 0, vertices.size());
shaderProgram.disableAttributeArray("vertex");
shaderProgram.disableAttributeArray("textureCoordinate");
shaderProgram.release();
}
void GlWidget::paintGL()
{
//! [5]
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
QMatrix4x4 mMatrix;
QMatrix4x4 vMatrix;
QMatrix4x4 cameraTransformation;
cameraTransformation.rotate(alpha, 0, 1, 0);
cameraTransformation.rotate(beta, 1, 0, 0);
QVector3D cameraPosition = cameraTransformation * QVector3D(0, 0, distance);
QVector3D cameraUpDirection = cameraTransformation * QVector3D(0, 1, 0);
vMatrix.lookAt(cameraPosition, QVector3D(0, 0, 0), cameraUpDirection);
//! [6]
shaderProgram.bind();
shaderProgram.setUniformValue("mvpMatrix", pMatrix * vMatrix * mMatrix);
shaderProgram.setUniformValue("texture", 0);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture);
glActiveTexture(0);
shaderProgram.setAttributeArray("vertex", vertices.constData());
shaderProgram.enableAttributeArray("vertex");
shaderProgram.setAttributeArray("textureCoordinate", textureCoordinates.constData());
shaderProgram.enableAttributeArray("textureCoordinate");
glDrawArrays(GL_TRIANGLES, 0, vertices.size());
shaderProgram.disableAttributeArray("vertex");
shaderProgram.disableAttributeArray("textureCoordinate");
shaderProgram.release();
}
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