mathplot/examples/visual.cpp at main · sebsjames/mathplot · GitHub

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* An example mplot::Visual scene, containing a HexGrid.

#include <memory>

#include <iostream>

#include <vector>

#include <cmath>

import sm.vec;

import sm.hexgrid;

import mplot.visual;

import mplot.hexgridvisual;

int main()

{

mplot::Visual v(1600, 1000, "mplot::Visual");

// You can set a field of view (in degrees)

v.fov = 15;

// Should the scene be 'locked' so that movements and rotations are prevented?

v.sceneLocked (false);

// Various methods to set the 'scene translation'. Try pressing 'z' in the app window to see what the current sceneTrans is

v.setSceneTransXY (0.0f, 0.0f);

v.setSceneTransZ (-6.0f);

v.setSceneTrans (sm::vec<float, 3>{0.0f, 0.0f, -6.0f});

// Make this larger to "scroll in and out of the image" faster

v.scenetrans_stepsize = 0.5;

// The coordinate arrows can be hidden

v.showCoordArrows (true);

// The title can be shown, or hidden (default)

v.showTitle (true);

// The coord arrows can be displayed within the scene (rather than in, say, the corner)

v.coordArrowsInScene (false);

// You can set the background (white, black, or any other colour)

v.backgroundWhite();

// You can switch on the "lighting shader" which puts diffuse light into the scene

v.lightingEffects();

// Add some text labels to the scene

v.addLabel ("Each object is derived from mplot::VisualModel", {0.005f, -0.02f, 0.0f});

v.addLabel ("This is a mplot::CoordArrows object", {0.03f, -0.23f, 0.0f});

v.addLabel ("This is a\nmplot::HexGridVisual\nobject", {0.26f, -0.16f, 0.0f});

// Create a hexgrid to show in the scene

sm::hexgrid<float> hg(0.01, 3, 0);

hg.set_circular_boundary (0.3);

std::cout << "Number of hexes in grid:" << hg.num() << std::endl;

// Make some dummy data (a sine wave) to make an interesting surface

std::vector<float> data(hg.num(), 0.0);

for (unsigned int hi = 0; hi < hg.num(); ++hi) {

data[hi] = 0.05f + 0.05f * std::sin (10.0f * hg.d_x[hi]); // Range 0->1

}

// Add a HexGridVisual to display the hexgrid within the mplot::Visual scene

sm::vec<float, 3> offset = { 0.0, -0.05, 0.0 };

auto hgv = std::make_unique<mplot::HexGridVisual<float>>(&hg, offset);

hgv->set_parent (v.get_id());

hgv->setScalarData (&data);

hgv->finalize();

v.addVisualModel (hgv);

v.keepOpen();

v.savegltf("./visual.gltf");

return 0;

}

mathplot/examples/visual.cpp at main · sebsjames/mathplot · GitHub

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