76 lines
1.7 KiB
C++
76 lines
1.7 KiB
C++
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#include <GL/glut.h>
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#include <string>
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#include "textures.h"
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int render_7_seg_img;
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void render_7_seg_part(int id, double size)
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{
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// Start drawing
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glBegin(GL_QUADS);
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glTexCoord2d((id+0)/11.0, 0); glVertex2d(0 ,0 );
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glTexCoord2d((id+1)/11.0, 0); glVertex2d(size,0 );
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glTexCoord2d((id+1)/11.0, 1); glVertex2d(size,size);
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glTexCoord2d((id+0)/11.0, 1); glVertex2d(0 ,size);
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// Stop drawing
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glEnd();
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}
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void render_7_seg(unsigned long n, double size, int places)
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{
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// Bind the texture
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glBindTexture(GL_TEXTURE_2D, render_7_seg_img);
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// Convert the number to a string
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std::string str = std::to_string(n);
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// Is the place count negative, by default
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if(places == -1)
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{
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// Set the places to display as the string size
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places = str.size();
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}
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// Loop over the places
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for(int i=0;i<places;i++)
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{
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// Is the iterator too large
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if(i >= str.size())
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{
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// Render a blank pane
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render_7_seg_part(10, size);
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}
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else
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{
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// Get part of the number to view
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char item = str[str.size()-i];
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// Render the item
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if(item=='0') render_7_seg_part(0, size);
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if(item=='1') render_7_seg_part(1, size);
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if(item=='2') render_7_seg_part(2, size);
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if(item=='3') render_7_seg_part(3, size);
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if(item=='4') render_7_seg_part(4, size);
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if(item=='5') render_7_seg_part(5, size);
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if(item=='6') render_7_seg_part(6, size);
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if(item=='7') render_7_seg_part(7, size);
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if(item=='8') render_7_seg_part(8, size);
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if(item=='9') render_7_seg_part(9, size);
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}
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}
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// Unbind the image
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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void text_init()
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{
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// Load the 7 segment display
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int w, h;
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render_7_seg_img = loadArchiveImageGL("textures/7-seg.rimg", 'L', w, h);
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}
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