hello,
if we have a curve with 0 step, when it is drawn (via LWJGLRenderer.draw(Curve curve) ) we have an infinite loop due to a divide by 0 in the limit computation.
public void draw(Curve curve) {
// set world matrix
Quaternion rotation = curve.getWorldRotation();
Vector3f translation = curve.getWorldTranslation();
Vector3f scale = curve.getWorldScale();
float rot = rotation.toAngleAxis(vRot) * FastMath.RAD_TO_DEG;
RendererRecord matRecord = (RendererRecord) DisplaySystem
.getDisplaySystem().getCurrentContext().getRendererRecord();
matRecord.switchMode(GL11.GL_MODELVIEW);
GL11.glPushMatrix();
GL11.glTranslatef(translation.x, translation.y, translation.z);
GL11.glRotatef(rot, vRot.x, vRot.y, vRot.z);
GL11.glScalef(scale.x, scale.y, scale.z);
applyStates(curve.states, null);
// render the object
GL11.glBegin(GL11.GL_LINE_STRIP);
FloatBuffer color = curve.getColorBuffer();
if (color != null)
color.rewind();
float colorInterval = 0;
float colorModifier = 0;
if (null != color) {
matRecord.setCurrentColor(color.get(), color.get(), color.get(),
color.get());
colorInterval = 4f / color.limit();
colorModifier = colorInterval;
color.rewind();
}
Vector3f point;
float limit = (1 + (1.0f / curve.getSteps())); <
Here
for (float t = 0; t <= limit; t += 1.0f / curve.getSteps()) { <
Here
if (t >= colorInterval && color != null) {
colorInterval += colorModifier;
matRecord.setCurrentColor(color.get(), color.get(),
color.get(), color.get());
}
point = curve.getPoint(t, tempVa);
GL11.glVertex3f(point.x, point.y, point.z);
}
if (Debug.stats) {
StatCollector.addStat(StatType.STAT_VERTEX_COUNT, limit);
}
GL11.glEnd();
undoTransforms(curve);
}Of course, a curve with 0 step is not very usefull, but as I dynamically set the number of steps from the curve size, it may happens.