34 lines
1.0 KiB
Plaintext
34 lines
1.0 KiB
Plaintext
void draw_arrow(float x1, float y1, float x2, float y2, float offset, float weight) {
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if (x1 == x2 && y1 == y2) return;
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float angle = atan2(y2-y1, x2 - x1);
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pushMatrix();
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translate(x1, y1);
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PVector v = PVector.fromAngle(angle);
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v.setMag(dist(x1, y1, x2, y2) - min(offset, weight) - offset/2);
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line(0, 0, v.x, v.y);
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pushMatrix();
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translate(v.x, v.y);
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rotate(angle);
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float triangle_size = dist(x1, y1, x2, y2) / 50;
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triangle(-triangle_size * 2, - triangle_size, 0, 0, -triangle_size * 2, triangle_size);
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popMatrix();
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popMatrix();
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}
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void draw() {
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int edge_weight = 20;
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int point_weight = 30;
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int graph_weight = 10;
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if (frameCount % 60 == 0) {
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g.draw_graph(graph_weight, point_weight);
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g.draw_points(point_weight);
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stroke(#00FF00);
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if (!edges.isEmpty()) {
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int[] edge = edges.get(0);
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edges.remove(0);
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strokeWeight(edge_weight);
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draw_arrow(g.coords.get(edge[0]).get(0), g.coords.get(edge[0]).get(1), g.coords.get(edge[1]).get(0), g.coords.get(edge[1]).get(1), point_weight, edge_weight);
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}
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}
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}
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