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2014/10/15 ¤U¤È 10:14:24

iphone Programming Glossary: start.y

Changing pen width according writing speed

http://stackoverflow.com/questions/6490057/changing-pen-width-according-writing-speed

viewFramebuffer Convert locations from Points to Pixels CGFloat scale self.contentScaleFactor start.x scale start.y scale end.x scale end.y scale Allocate vertex array buffer if vertexBuffer NULL vertexBuffer malloc vertexMax 2 sizeof GLfloat.. to the buffer so there are drawing points every X pixels count MAX ceilf sqrtf end.x start.x end.x start.x end.y start.y end.y start.y kBrushPixelStep 1 for i 0 i count i if vertexCount vertexMax vertexMax 2 vertexMax vertexBuffer realloc vertexBuffer.. so there are drawing points every X pixels count MAX ceilf sqrtf end.x start.x end.x start.x end.y start.y end.y start.y kBrushPixelStep 1 for i 0 i count i if vertexCount vertexMax vertexMax 2 vertexMax vertexBuffer realloc vertexBuffer vertexMax..

Undo drawing in Paint Application

http://stackoverflow.com/questions/6689600/undo-drawing-in-paint-application

viewFramebuffer Convert locations from Points to Pixels CGFloat scale 1.0 self.contentScaleFactor start.x scale start.y scale end.x scale end.y scale Allocate vertex array buffer if eraseBuffer NULL eraseBuffer malloc eraseMax 2 sizeof GLfloat.. to the buffer so there are drawing points every X pixels count MAX ceilf sqrtf end.x start.x end.x start.x end.y start.y end.y start.y kBrushPixelStep 1 for i 0 i count i if vertexCount eraseMax eraseMax 2 eraseMax eraseBuffer realloc eraseBuffer.. so there are drawing points every X pixels count MAX ceilf sqrtf end.x start.x end.x start.x end.y start.y end.y start.y kBrushPixelStep 1 for i 0 i count i if vertexCount eraseMax eraseMax 2 eraseMax eraseBuffer realloc eraseBuffer eraseMax..

Save OpenGL Drawn item as a Image

http://stackoverflow.com/questions/9660723/save-opengl-drawn-item-as-a-image

viewFramebuffer Convert locations from Points to Pixels CGFloat scale self.contentScaleFactor start.x scale start.y scale end.x scale end.y scale Allocate vertex array buffer if vertexBuffer NULL vertexBuffer malloc vertexMax 2 sizeof GLfloat.. to the buffer so there are drawing points every X pixels count MAX ceilf sqrtf end.x start.x end.x start.x end.y start.y end.y start.y kBrushPixelStep 1 for i 0 i count i if vertexCount vertexMax vertexMax 2 vertexMax vertexBuffer realloc vertexBuffer.. so there are drawing points every X pixels count MAX ceilf sqrtf end.x start.x end.x start.x end.y start.y end.y start.y kBrushPixelStep 1 for i 0 i count i if vertexCount vertexMax vertexMax 2 vertexMax vertexBuffer realloc vertexBuffer vertexMax..

Record the drawing as a m4v video file - OpenGL

http://stackoverflow.com/questions/9661259/record-the-drawing-as-a-m4v-video-file-opengl

viewFramebuffer Convert locations from Points to Pixels CGFloat scale self.contentScaleFactor start.x scale start.y scale end.x scale end.y scale Allocate vertex array buffer if vertexBuffer NULL vertexBuffer malloc vertexMax 2 sizeof GLfloat.. to the buffer so there are drawing points every X pixels count MAX ceilf sqrtf end.x start.x end.x start.x end.y start.y end.y start.y kBrushPixelStep 1 for i 0 i count i if vertexCount vertexMax vertexMax 2 vertexMax vertexBuffer realloc vertexBuffer.. so there are drawing points every X pixels count MAX ceilf sqrtf end.x start.x end.x start.x end.y start.y end.y start.y kBrushPixelStep 1 for i 0 i count i if vertexCount vertexMax vertexMax 2 vertexMax vertexBuffer realloc vertexBuffer vertexMax..