PathExample(int, const char**)
{
using namespace oglplus;
PathNVCommand commands[] = {
PathNVCommand::MoveTo,
PathNVCommand::LineTo,
PathNVCommand::LineTo,
PathNVCommand::LineTo,
PathNVCommand::LineTo,
PathNVCommand::Close
};
GLfloat coords[] = {
0.00, 0.85,
0.65,-0.80,
-0.85, 0.30,
0.85, 0.30,
-0.65,-0.80
};
path.Commands(
sizeof(commands)/sizeof(commands[0]),
commands,
sizeof(coords)/sizeof(coords[0]),
coords
);
path.StrokeWidth(0.01);
path.JoinStyle(PathNVJoinStyle::Round);
GLfloat dash_array[] = {0.05, 0.02};
path.DashArray(
sizeof(dash_array)/sizeof(dash_array[0]),
dash_array
);
glc.MatrixMode(CompatibilityMatrixMode::Projection);
glc.LoadIdentity();
glc.MatrixMode(CompatibilityMatrixMode::Modelview);
glc.LoadIdentity();
gl.ClearColor(1.0f, 1.0f, 1.0f, 0.0f);
gl.ClearStencil(0);
gl.StencilMask(~0);
gl.StencilFunc(CompareFunction::NotEqual, 0, 0x1F);
gl.StencilOp(
StencilOperation::Keep,
StencilOperation::Keep,
StencilOperation::Zero
);
gl.Enable(Capability::StencilTest);
}
TextExample(int /*argc*/, const char** /*argv*/)
: text_glyphs(128)
{
using namespace oglplus;
GLfloat font_scale = 48;
text_glyphs.GlyphRange(
PathNVFontTarget::Standard,
"Sans",
PathNVFontStyle::Bold,
0, 128,
PathNVMissingGlyph::Use,
~0,
font_scale
);
GLfloat color_gen_coeffs[9] = {
-0.6f, 0.0f, 0.8f,
0.0f, 0.0f, 0.0f,
0.5f, 0.0f, 0.5f
};
npr.ColorGen(
PathNVColor::Primary,
PathNVGenMode::ObjectBoundingBox,
PathNVColorFormat::RGB,
color_gen_coeffs
);
gl.ClearColor(1.0f, 1.0f, 1.0f, 0.0f);
gl.ClearStencil(0);
gl.StencilMask(~0);
gl.StencilFunc(CompareFunction::NotEqual, 0, 0xFF);
gl.StencilOp(
StencilOperation::Keep,
StencilOperation::Keep,
StencilOperation::Zero
);
gl.Enable(Capability::StencilTest);
}
TextExample(int /*argc*/, const char** /*argv*/)
: text("OpenGL")
, text_path(text.size())
, glyph_indices(make_glyph_indices())
, glyph_spacings(glyph_indices.size()) {
using namespace oglplus;
GLfloat font_scale = 64;
text_path.Glyphs(
PathNVFontTarget::Standard,
"Sans",
PathNVFontStyle::Bold,
text,
PathNVMissingGlyph::Use,
~0,
font_scale);
text_path.GetSpacing(
PathNVListMode::AccumAdjacentPairs,
glyph_indices,
1.0f,
1.0f,
PathNVTransformType::TranslateX,
glyph_spacings);
glyph_spacings.insert(glyph_spacings.begin(), 0);
glyph_spacings.pop_back();
glyph_indices.pop_back();
GLfloat text_left = glyph_spacings.front();
GLfloat text_right = glyph_spacings.back();
GLfloat font_min_max[2];
text_path.GetMetricRange(
PathNVMetricQuery::FontYMinBounds | PathNVMetricQuery::FontYMaxBounds,
1,
0,
font_min_max);
projection.Ortho(
text_left - 10,
text_right + 10,
font_min_max[0],
font_min_max[1],
-1.0,
+1.0);
modelview.LoadIdentity();
gl.ClearColor(1.0f, 1.0f, 1.0f, 0.0f);
gl.ClearStencil(0);
gl.StencilMask(~0);
gl.StencilFunc(CompareFunction::NotEqual, 0, 0xFF);
gl.StencilOp(
StencilOperation::Keep,
StencilOperation::Keep,
StencilOperation::Zero);
gl.Enable(Capability::StencilTest);
}