A high-performance general-purpose compute library
* Copyright (c) 2014, ArrayFire
* All rights reserved.
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
#include <arrayfire.h>
#include <math.h>
#include <cstdio>
using namespace af;
const static float MINIMUM = -3.0f;
const static float MAXIMUM = 3.0f;
const static float STEP = 0.18f;
int main(int, char**) {
try {
af::Window myWindow(1024, 1024, "2D Vector Field example: ArrayFire");
myWindow.grid(1, 2);
array dataRange = seq(MINIMUM, MAXIMUM, STEP);
array x = tile(dataRange, 1, dataRange.dims(0));
array y = tile(dataRange.T(), dataRange.dims(0), 1);
float scale = 2.0f;
do {
array points = join(1, flat(x), flat(y));
array saddle = join(1, flat(x), -1.0f * flat(y));
array bvals = sin(scale * (x * x + y * y));
array hbowl = join(1, constant(1, x.elements()), flat(bvals));
myWindow(0, 0).vectorField(points, saddle, "Saddle point");
myWindow(0, 1).vectorField(
points, hbowl, "hilly bowl (in a loop with varying amplitude)");
scale -= 0.0010f;
if (scale < -0.01f) { scale = 2.0f; }
} while (!myWindow.close());
} catch (af::exception& e) {
fprintf(stderr, "%s\n", e.what());
return 0;
Window object to render af::arrays.
Definition: graphics.h:37
A multi dimensional data container.
Definition: array.h:37
dim4 dims() const
Get dimensions of the array.
void eval() const
Evaluate any JIT expressions to generate data for the array.
array T() const
Get the transposed the array.
dim_t elements() const
Get the total number of elements across all dimensions of the array.
An ArrayFire exception class.
Definition: exception.h:22
virtual const char * what() const
Returns an error message for the exception in a string format.
Definition: exception.h:46
seq is used to create sequences for indexing af::array
Definition: seq.h:46
AFAPI void info()
void vectorField(const array &points, const array &directions, const char *const title=NULL)
Renders the input arrays as a 2D or 3D vector field plot to the window.
bool close()
Check if window is marked for close.
void show()
This function swaps the background buffer to current view and polls for any key strokes while the win...
void grid(const int rows, const int cols)
Setup grid layout for multiview mode in a window.
Definition: algorithm.h:15