mirror of
https://git.coom.tech/drummyfish/small3dlib.git
synced 2024-12-23 01:26:19 +01:00
Implement FOV
This commit is contained in:
parent
534f4aa2b9
commit
420bbc3aa6
2 changed files with 6 additions and 12 deletions
17
s3l.h
17
s3l.h
|
@ -1315,14 +1315,6 @@ void S3L_makeWorldMatrix(S3L_Transform3D worldTransform, S3L_Mat4 *m)
|
|||
|
||||
void S3L_makeCameraMatrix(S3L_Transform3D cameraTransform, S3L_Mat4 *m)
|
||||
{
|
||||
/*
|
||||
S3L_makeTranslationMat(
|
||||
-1 * cameraTransform.translation.x,
|
||||
-1 * cameraTransform.translation.y,
|
||||
-1 * cameraTransform.translation.z,
|
||||
m);
|
||||
*/
|
||||
|
||||
S3L_makeTranslationMat(
|
||||
-1 * cameraTransform.translation.x,
|
||||
-1 * cameraTransform.translation.y,
|
||||
|
@ -1340,10 +1332,11 @@ void S3L_makeCameraMatrix(S3L_Transform3D cameraTransform, S3L_Mat4 *m)
|
|||
S3L_mat4Xmat4(m,&r);
|
||||
}
|
||||
|
||||
static inline void S3L_zDivide(S3L_Vec4 *vector)
|
||||
static inline void S3L_perspectiveDivide(S3L_Vec4 *vector,
|
||||
S3L_Unit focalLength)
|
||||
{
|
||||
vector->x = (vector->x * S3L_FRACTIONS_PER_UNIT) / S3L_nonZero(vector->z);
|
||||
vector->y = (vector->y * S3L_FRACTIONS_PER_UNIT) / S3L_nonZero(vector->z);
|
||||
vector->x = (vector->x * focalLength) / vector->z;
|
||||
vector->y = (vector->y * focalLength) / vector->z;
|
||||
}
|
||||
|
||||
void S3L_drawModelIndexed(
|
||||
|
@ -1382,7 +1375,7 @@ void S3L_drawModelIndexed(
|
|||
transformed##n.x = pointModel.x;\
|
||||
transformed##n.y = pointModel.y;\
|
||||
transformed##n.z = pointModel.z;\
|
||||
S3L_zDivide(&transformed##n);
|
||||
S3L_perspectiveDivide(&transformed##n,camera->focalLength);
|
||||
|
||||
project(0)
|
||||
project(1)
|
||||
|
|
|
@ -196,6 +196,7 @@ int main()
|
|||
SDL_Event event;
|
||||
|
||||
S3L_initCamera(&camera);
|
||||
|
||||
camera.transform.translation.z = -S3L_FRACTIONS_PER_UNIT * 2;
|
||||
// camera.transform.translation.x = S3L_FRACTIONS_PER_UNIT;
|
||||
// camera.transform.translation.y = S3L_FRACTIONS_PER_UNIT;
|
||||
|
|
Loading…
Reference in a new issue