CubicSDR/src/visual/SpectrumContext.cpp
2014-12-05 18:32:38 -05:00

37 lines
929 B
C++

#include "SpectrumContext.h"
#include "SpectrumCanvas.h"
SpectrumContext::SpectrumContext(SpectrumCanvas *canvas, wxGLContext *sharedContext) :
PrimaryGLContext(canvas, sharedContext) {
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
}
void SpectrumContext::Draw(std::vector<float> &points) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glDisable(GL_TEXTURE_2D);
glColor3f(1.0, 1.0, 1.0);
if (points.size()) {
glPushMatrix();
glTranslatef(-1.0f, -0.9f, 0.0f);
glScalef(2.0f, 1.8f, 1.0f);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, &points[0]);
glDrawArrays(GL_LINE_STRIP, 0, points.size() / 2);
glDisableClientState(GL_VERTEX_ARRAY);
glPopMatrix();
}
CheckGLError();
}