Source code for yt_idv.scene_data.rgba
import traitlets
from yt_idv.constants import FULLSCREEN_QUAD
from yt_idv.opengl_support import Texture1D, VertexArray, VertexAttribute
from yt_idv.scene_data.base_data import SceneData
[docs]class RGBAData(SceneData):
name = "rgba_data"
colormap_texture = traitlets.Instance(Texture1D)
@traitlets.default("vertex_array")
def _default_vertex_array(self):
va = VertexArray(name="tri", each=6)
fq = FULLSCREEN_QUAD.reshape((6, 3), order="C")
va.attributes.append(VertexAttribute(name="vertexPosition_modelspace", data=fq))
return va
[docs] def add_data(self, lines):
assert lines.shape[1] == 4
self.colormap_texture = Texture1D(boundary_x="clamp", data=lines)