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miserable failure to get text rendering to work using these 'easy text rendering' tricks. Will be bringing in a third party library which I have to write the damn backend implementation for

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mitchellhansen
2020-03-10 18:04:08 -07:00
parent 77b781df1a
commit db8cbdc77e
7 changed files with 505 additions and 37 deletions
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60
src/drawables/text.rs
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@@ -12,108 +12,118 @@ pub struct Text {
/// Container class which implements drawable.
impl Text {
fn accumulator(depth: f32, accumulator: &mut f32, constant: f32) -> f32{
let accum = *accumulator;
*accumulator += constant;
return depth + accum + constant;
}
///
pub fn new(position: (f32, f32),
size: (f32, f32),
depth: u32) -> Text {
let normalized_depth = (depth as f32 / 255.0);
let mut depth_accumulator = 1.0;
let depth_accum_constant = -0.01 as f32;
let verts = {
vec![
ColorVertex3D {
v_position: [-0.5, -0.5, normalized_depth],
color: [1.0, 1.0, 1.0, 1.0/255.0],
v_position: [-0.5, -0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)+0.1],
color: [1.0, 0.0, 0.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-1.0, 1.0, normalized_depth],
v_position: [-1.0, 1.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)+0.1],
color: [1.0, 0.8, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-0.25, 0.0, normalized_depth],
v_position: [-0.25, 0.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)+0.1],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-0.25, 0.0, normalized_depth],
v_position: [-0.25, 0.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [0.8, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-1.0, 1.0, normalized_depth],
v_position: [-1.0, 1.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.0, 0.5, normalized_depth],
v_position: [0.0, 0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 0.8, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.25, 0.0, normalized_depth],
v_position: [0.25, 0.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-1.0, 1.0, normalized_depth],
v_position: [-1.0, 1.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 0.8, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.0, 0.5, normalized_depth],
v_position: [0.0, 0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.5, -0.5, normalized_depth],
v_position: [0.5, -0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-1.0, 1.0, normalized_depth],
v_position: [-1.0, 1.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.25, 0.0, normalized_depth],
v_position: [0.25, 0.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.25, -0.5, normalized_depth],
v_position: [0.25, -0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-1.0, 1.0, normalized_depth],
v_position: [-1.0, 1.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.5, -0.5, normalized_depth],
v_position: [0.5, -0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.25, -0.5, normalized_depth],
v_position: [0.25, -0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-1.0, 1.0, normalized_depth],
v_position: [-1.0, 1.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.0, -0.1, normalized_depth],
v_position: [0.0, -0.1, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-0.25, -0.5, normalized_depth],
v_position: [-0.25, -0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-1.0, 1.0, normalized_depth],
v_position: [-1.0, 1.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [0.0, -0.1, normalized_depth],
v_position: [0.0, -0.1, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-0.5, -0.5, normalized_depth],
v_position: [-0.5, -0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-1.0, 1.0, normalized_depth],
v_position: [-1.0, 1.0, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
},
ColorVertex3D {
v_position: [-0.25, -0.5, normalized_depth],
v_position: [-0.25, -0.5, Text::accumulator(normalized_depth, &mut depth_accumulator, depth_accum_constant)],
color: [1.0, 1.0, 1.0, 1.0/255.0],
}]
};