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Add shaders for planetographic grid

pull/3/head
Hleb Valoshka 2019-11-24 22:21:21 +03:00
parent 7025800e98
commit 8005ac1577
1 changed files with 16 additions and 12 deletions
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28
src/celengine/planetgrid.cpp
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@ -91,6 +91,10 @@ PlanetographicGrid::render(Renderer* renderer,
float discSizeInPixels,
double tdb) const
{
auto *prog = renderer->getShaderManager().getShader("uniform_color");
if (prog == nullptr)
return;
// Compatibility
Quaterniond q = Quaterniond(AngleAxis<double>(PI, Vector3d::UnitY())) * body.getEclipticToBodyFixed(tdb);
Quaternionf qf = q.cast<float>();
@ -116,8 +120,6 @@ PlanetographicGrid::render(Renderer* renderer,
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glPushMatrix();
glRotate(qf.conjugate());
glScale(scale * semiAxes);
@ -139,6 +141,8 @@ PlanetographicGrid::render(Renderer* renderer,
longitudeStep = 30.0f;
}
prog->use();
for (float latitude = -90.0f + latitudeStep; latitude < 90.0f; latitude += latitudeStep)
{
float phi = degToRad(latitude);
@ -146,12 +150,12 @@ PlanetographicGrid::render(Renderer* renderer,
if (latitude == 0.0f)
{
glColor(Renderer::PlanetEquatorColor);
prog->vec4Param("color") = Renderer::PlanetEquatorColor.toVector4();
glLineWidth(2.0f);
}
else
{
glColor(Renderer::PlanetographicGridColor);
prog->vec4Param("color") = Renderer::PlanetographicGridColor.toVector4();
}
glPushMatrix();
glTranslatef(0.0f, (float) std::sin(phi), 0.0f);
@ -179,9 +183,9 @@ PlanetographicGrid::render(Renderer* renderer,
glVertexPointer(3, GL_FLOAT, 0, xyCircle);
prog->vec4Param("color") = Renderer::PlanetographicGridColor.toVector4();
for (float longitude = 0.0f; longitude <= 180.0f; longitude += longitudeStep)
{
glColor(Renderer::PlanetographicGridColor);
glPushMatrix();
glRotatef(longitude, 0.0f, 1.0f, 0.0f);
glDrawArrays(GL_LINE_LOOP, 0, circleSubdivisions);
@ -242,11 +246,9 @@ PlanetographicGrid::render(Renderer* renderer,
glPopMatrix();
glDisable(GL_LIGHTING);
glUseProgram(0);
glDisable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
}
@ -295,11 +297,13 @@ PlanetographicGrid::InitializeGeometry()
for (unsigned int i = 0; i < circleSubdivisions; i++)
{
float theta = (float) (2.0 * PI) * (float) i / (float) circleSubdivisions;
xyCircle[i * 3 + 0] = (float) std::cos(theta);
xyCircle[i * 3 + 1] = (float) std::sin(theta);
float s, c;
sincos(theta, s, c);
xyCircle[i * 3 + 0] = c;
xyCircle[i * 3 + 1] = s;
xyCircle[i * 3 + 2] = 0.0f;
xzCircle[i * 3 + 0] = (float) std::cos(theta);
xzCircle[i * 3 + 0] = c;
xzCircle[i * 3 + 1] = 0.0f;
xzCircle[i * 3 + 2] = (float) std::sin(theta);
xzCircle[i * 3 + 2] = s;
}
}