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void
Matrix function

slLookAt

Multiply gaze matrix on current matrix

Format

void slLookAt(camera , target , angz)
FIXED *camera ;
FIXED *target ;
ANGLE angz ;

Parameter

camera [XYZ] XYZ coordinates representing the camera position
target [XYZ] XYZ coordinates representing the target position
angz camera angle angle

Function

Multiplies the current matrix with a matrix (line-of-sight matrix) that allows the target to be viewed from the specified camera position at the specified angle.

Return value

None

Remarks

If a gaze direction parallel to the Y axis is selected, the vector on the XZ plane will be smaller (rotation around the Y axis cannot be determined) and may not be drawn correctly, so the gaze direction should not be parallel to the Y axis. Please adjust the value to. The following figure is an image model of gaze.

Reference: Chapter 6 Camera

slLookAt

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