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fix arrows heads

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QwiglyDee
2020-12-11 05:44:50 +07:00
committed by Dion Moult
parent f37283f61c
commit 48de2f77ab
1 changed files with 32 additions and 12 deletions
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src/ifcblenderexport/blenderbim/bim/decoration.py
+32 -12
View File
@@ -47,12 +47,15 @@ class DimensionDecorator(ViewDecorator):
"""
GEOM_GLSL = """
layout(lines) in;
layout(line_strip, max_vertices=8) out;
layout(line_strip, max_vertices=10) out;
uniform float angle;
uniform float length;
uniform float aspect;
void main() {
/** generates arrows from lines */
vec4 p0 = gl_in[0].gl_Position, p1 = gl_in[1].gl_Position;
float c = cos(angle), s = sin(angle);
mat4 rot_a = mat4( c, -s, 0, 0,
@@ -64,32 +67,46 @@ class DimensionDecorator(ViewDecorator):
0, 0, 1, 0,
0, 0, 0, 1);
vec4 dir = normalize(p1 - p0);
// converting to and from square-space coordinates to calculate arrows
mat4 clip2square = mat4(aspect, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
mat4 square2clip = mat4(1/aspect, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
vec4 dir = normalize((p1 - p0) * clip2square) * length;
vec4 head = dir * square2clip;
vec4 arr_a = dir * rot_a * square2clip;
vec4 arr_b = dir * rot_b * square2clip;
vec4 arr_a = rot_a * dir * length;
vec4 arr_b = rot_b * dir * length;
gl_Position = p0;
gl_Position = p0 + head;
EmitVertex();
gl_Position = p1;
gl_Position = p1 - head;
EmitVertex();
EndPrimitive();
gl_Position = p0 + arr_a;
EmitVertex();
gl_Position = p0;
EmitVertex();
gl_Position = p0 + arr_a;
EmitVertex();
gl_Position = p0 + arr_b;
EmitVertex();
gl_Position = p0;
EmitVertex();
EndPrimitive();
gl_Position = p1 - arr_a;
EmitVertex();
gl_Position = p1;
EmitVertex();
gl_Position = p1 - arr_b;
EmitVertex();
gl_Position = p1 - arr_a;
EmitVertex();
gl_Position = p1;
EmitVertex();
EndPrimitive();
/*
gl_Position = vec4(0, 0, 0, 1) * square2clip;
EmitVertex();
gl_Position = vec4(0.25, 0.25, 0, 1) * square2clip;
EmitVertex();
EndPrimitive();
*/
}
"""
FRAG_GLSL = """
@@ -189,10 +206,13 @@ class DimensionDecorator(ViewDecorator):
segments, []))
batch = batch_for_shader(self.shader, 'LINES', {'pos': points})
self.shader.bind()
matrix = self.context.region_data.perspective_matrix
aspect = self.context.region.width / self.context.region.height
self.shader.uniform_float("viewMatrix", matrix)
# TODO: get everything from styles
self.shader.uniform_float('aspect', aspect)
self.shader.uniform_float('color', (1.0, 1.0, 1.0))
self.shader.uniform_float('angle', math.pi / 12)
self.shader.uniform_float('length', 0.05)
self.shader.uniform_float('length', 32 / self.context.region.height)
batch.draw(self.shader)