kmuehlbauer

_interpolation_template = """
    #include "misc/spatial-filters.frag"
    vec4 texture_lookup_filtered(vec2 texcoord) {
        if(texcoord.x < 0.0 || texcoord.x > 1.0 ||
        texcoord.y < 0.0 || texcoord.y > 1.0) {
            discard;
        }
        return %s($texture, $shape, texcoord);
    }"""

kmuehlbauer

import sys
from vispy import scene
from vispy import app
from vispy import visuals
from vispy.util.filter import gaussian_filter
from vispy.visuals.shaders import Function, FunctionChain
from vispy.color import Color
import numpy as np
from vispy.io import load_data_file, read_png

kmuehlbauer

// coefficients for the cubic polynomial
vec4 c0 = vec4(-1.0,  3.0, -3.0,  1.0 ) /  6.0;
vec4 c1 = vec4( 3.0, -6.0,  0.0,  4.0 ) /  6.0;
vec4 c2 = vec4(-3.0,  3.0,  3.0,  1.0 ) /  6.0;
vec4 c3 = vec4( 1.0,  0.0,  0.0,  0.0 ) /  6.0;

vec4 cubic(vec4 var, vec4 p0, vec4 p1, vec4 p2, vec4 p3 ) {
    // return cubic polynomial
    return  p0 * dot( c0, var) +
            p1 * dot( c1, var) +

kmuehlbauer

kmuehlbauer

kmuehlbauer

# !/usr/bin/env python
# used with examples from https://github.com/vispy

from PyQt5 import QtWidgets, QtCore
import sys
import time

import numpy as np
from vispy import app, gloo
from vispy.util.transforms import perspective, translate, rotate

kmuehlbauer

kmuehlbauer

kmuehlbauer

kmuehlbauer

• 1. bought transcend microSDHC UHS-I class 10 16GB
• 2. etched 2018-10-09-raspbian-stretch
• 3. started raspbian
• 4. perform first time startup section (language etc.)
• 5. reboot PI
• 6.start raspi_config at console
  • 7 Advanced Options
    • A1 Expand Filesystem - resize root partition to use all SD space
    • A7 GL Driver
• G1 (Full KMS) OpenGL desktop driver with full KMS