22 lines
512 B
C++
22 lines
512 B
C++
#include "opglwidget.h"
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#include <GL/gl.h>
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#include <math.h>
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void OPGLWidget::initializeGL() {
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glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
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}
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void OPGLWidget::paintGL() {
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glClear(GL_COLOR_BUFFER_BIT);
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}
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void OPGLWidget::resizeGL(int w, int h) {
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glViewport(0, 0, w, h);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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float aspect = w / float(h);
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float top = 0.2f * tan(M_PI / 8);
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float right = 0.2f * tan(M_PI / 8) * aspect;
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glFrustum(-right , right, -top, top, 0.1f, 100.0f);
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glMatrixMode(GL_MODELVIEW);
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}
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