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Minor style changes to stroke geom shader

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This commit is contained in:
Grant Sanderson
2023-01-12 19:54:32 -08:00
parent de5198196b
commit 923066db2b
1 changed files with 14 additions and 7 deletions
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21
manimlib/shaders/quadratic_bezier_stroke/geom.glsl
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@ -51,11 +51,18 @@ const float ANGLE_THRESHOLD = 1e-3;
#INSERT finalize_color.glsl
void create_joint(float angle, vec3 unit_tan, float buff,
vec3 static_c0, out vec3 changing_c0,
vec3 static_c1, out vec3 changing_c1){
void create_joint(
float angle,
vec3 unit_tan,
float buff,
vec3 static_c0,
out vec3 changing_c0,
vec3 static_c1,
out vec3 changing_c1
){
float shift;
if(abs(angle) < ANGLE_THRESHOLD || abs(angle) > 0.99 * PI || int(joint_type) == NO_JOINT){
// if(abs(angle) < ANGLE_THRESHOLD || abs(angle) > 0.99 * PI || int(joint_type) == NO_JOINT){
if(abs(angle) < ANGLE_THRESHOLD || int(joint_type) == NO_JOINT){
// No joint
shift = 0;
}else if(int(joint_type) == MITER_JOINT){
@ -96,9 +103,9 @@ void get_corners(
float buff2 = 0.5 * stroke_width2 + aaw;
// Add correction for sharp angles to prevent weird bevel effects (Needed?)
float thresh = 0.5 * PI;
if(angle_from_prev > thresh) buff0 *= sin(angle_from_prev);
if(angle_to_next > thresh) buff2 *= sin(angle_to_next);
float thresh = 5 * PI / 6;
if(angle_from_prev > thresh) buff0 *= 2 * sin(angle_from_prev);
if(angle_to_next > thresh) buff2 *= 2 * sin(angle_to_next);
// Perpendicular vectors to the left of the curve
vec3 p0_perp = buff0 * normalize(cross(normal, v01));