Bitmap/Bézier curves/Cubic: Difference between revisions
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'''It can be run on line''' :<BR> [https://www.openprocessing.org/sketch/846556/ here.] |
'''It can be run on line''' :<BR> [https://www.openprocessing.org/sketch/846556/ here.] |
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<lang> |
<lang> |
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float[]x = new float[4]; |
float[] x = new float[4]; |
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float[]y = new float[4]; |
float[] y = new float[4]; |
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boolean[]permitDrag = new boolean[4]; |
boolean[] permitDrag = new boolean[4]; |
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void setup() { |
void setup() { |
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noFill(); |
noFill(); |
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stroke(0, 0, 255); |
stroke(0, 0, 255); |
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bezier |
bezier(x[1], y[1], x[0], y[0], x[3], y[3], x[2], y[2]); |
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// the bezier handles |
// the bezier handles |
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strokeWeight(1); |
strokeWeight(1); |
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stroke(0); |
stroke(0); |
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fill(0); |
fill(0); |
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for (int i =0; i< 4; i++) { |
for (int i = 0; i< 4; i++) { |
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if (i ==0 || i==3) { |
if (i == 0 || i == 3) { |
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fill(255, 100, 10); |
fill(255, 100, 10); |
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rectMode(CENTER); |
rectMode(CENTER); |
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// permit dragging |
// permit dragging |
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for (int i =0; i< 4; i++) { |
for (int i = 0; i < 4; i++) { |
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if (permitDrag[i]) { |
if (permitDrag[i]) { |
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x[i] = mouseX; |
x[i] = mouseX; |
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void mouseReleased () { |
void mouseReleased () { |
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for (int i =0; i< 4; i++) { |
for (int i = 0; i < 4; i++) { |
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permitDrag[i] = false; |
permitDrag[i] = false; |
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} |
} |
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void mousePressed () { |
void mousePressed () { |
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for (int i =0; i< 4; i++) { |
for (int i = 0; i < 4; i++) { |
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if (mouseX>=x[i]-5 && mouseX<=x[i]+10 && mouseY>=y[i]-5 && mouseY<=y[i]+10) { |
if (mouseX >= x[i]-5 && mouseX <= x[i]+10 && mouseY >= y[i]-5 && mouseY <= y[i]+10) { |
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permitDrag[i] = true; |
permitDrag[i] = true; |
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} |
} |
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} |
} |
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// hand curser when |
// hand curser when dragging over points |
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void mouseMoved () { |
void mouseMoved () { |
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cursor(ARROW); |
cursor(ARROW); |
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for (int i =0; i< 4; i++) { |
for (int i = 0; i < 4; i++) { |
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if (mouseX>=x[i]-5 && mouseX<=x[i]+10 && mouseY>=y[i]-5 && mouseY<=y[i]+10) { |
if (mouseX >= x[i]-5 && mouseX <= x[i]+10 && mouseY >= y[i]-5 && mouseY <= y[i]+10) { |
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cursor(HAND); |
cursor(HAND); |
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} |
} |
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} |
} |
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} |
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</lang> |
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=={{header|PureBasic}}== |
=={{header|PureBasic}}== |
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