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hockeyman

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About hockeyman

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  1. OpenGL Fill distance with quads

    Many many thanks for you. Just met the problem that as I see vectors aren't built-in in Objective-c. Maby you can suggest any library for it? And another question. Now with your code I have path witch should be filled. How could I do it? Any openGL commands or something to tell it to draw quads in every location from point A to point B?
  2. OpenGL Fill distance with quads

    [quote]The only way to fix this is to draw a brush for each pixel in between the circles.[/quote] How to do it? Is there any tutorials or some useful documentation/information on the internet or something?
  3. OpenGL Fill distance with quads

    I can, but I don't know how to do it in this situation. Because my vertex array object depends on user actions. I mean, points are being added wherever user drags pressed mouse. So I don't know how to tell my program where to draw these additional quads if distance is bigger than something. If last two quads vertexes in my vertex array is [CODE] (x1,y1)[top left] (x2,y2)[top right] (x3,y3)[bottom right] (x4,y4)[bottom left] [/CODE] and [CODE] (x5,y5)[top left] (x6,y6)[top right] (x7,y7)[bottom right] (x8,y8)[bottom left] [/CODE] and distance between them is bigger than my allowed size (lets say I'm counting distance between [bottom right] points to know the distance between quads), then how to add for example 3 quads (12 vertexes) to my vertex array where they are needed (between these two quads)? I cant't know where user will be drawing, so I don't know exactly where additional quads will be needed.
  4. I am developing paint app. User can draw with mouse on my OpenGL view. He draws textured quads (textured to look like circle). But when he drags mouse faster there appears spacings between quads. So I calculate distance between previous point and current point, and if its bigger than something I need to add more quads to that distance automatically. How can I do that? I'm using vertex array. Code: [CODE]int count = [vertices count] * 8; GLVertices = (GLfloat *)malloc(count * sizeof(GLfloat)); int currIndex = 0; for (NSValue *locationValuetl in vertices) { CGPoint loc = locationValuetl.pointValue; GLVertices[currIndex++] = loc.x; GLVertices[currIndex++] = loc.y; } for (NSValue *locationValuetr in vertices) { CGPoint loc = locationValuetr.pointValue; GLVertices[currIndex++] = loc.x; GLVertices[currIndex++] = loc.y; } for (NSValue *locationValuell in vertices) { CGPoint loc = locationValuell.pointValue; GLVertices[currIndex++] = loc.x; GLVertices[currIndex++] = loc.y; } for (NSValue *locationValuelr in vertices) { CGPoint loc = locationValuelr.pointValue; GLVertices[currIndex++] = loc.x; GLVertices[currIndex++] = loc.y; } int distance1 = sqrt(GLVertices[currIndex - 1]*GLVertices[currIndex - 9] + GLVertices[currIndex]*GLVertices[currIndex - 8]); if (distance1 > brushSize/4) { //need to do something here [/CODE] Image of current result: [img]http://s9.postimage.org/5dso9ff33/Screen_Shot_2012_07_09_at_1_33_57_PM.png[/img] Can someone help me? Thanks in advance
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